Purification of p-xylene using composite mixed matrix membranes

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The Chevron U.S.A. Inc., , Medal, L.P. patent solves the following problem:

Para-xylene is a chemical intermediate used to make resins, medicines, and phthalic acid. It is usually produced by a reforming reaction, with ethylbenzene and the other xylene isomers, ortho-xylene and meta-xylene. Para-xylene is usually thirty mole percent in the product composition.

Our analysis of this patent is as follows:

Chevron U.S.A. Inc., , Medal, L.P.’s patent US 6500233 B1 deals with Purification of p-xylene using composite mixed matrix membranes.
Composite membranes can separate p-xylene from mixtures including p-xylene and m-xylene, and processes for the purification p-xylene using membranes, said. The membrane polymer membranes with a thickness of between 10 and 1000 micron including non-connected zeolite particles less than 5 microns. In one picture, a relatively thin polymer layer (0.5-3 micron) containing zeolite particles is adjacent to a relatively thick polymer layer that may or may not include the zeolite particles, where thick on the two layers is between 10 and 1000 micron. The ratio of zeolite / polymer is about 0.2 by weight. A preferred method for preparing the compound is by dispersing the zeolite in a polymer solution, casting a film of polymer solution, and evaporating the solvent to form a polymeric film. The polymer permit passage of p-xylene and m-xylene in the vapor state, as the p-xylene diffuses the same or a faster rate through the polymer. polymer is preferably a polyaramide, polyimide or cellulose polymer p-xylene and m-xylene ag by the zeolite, even different rates. zeolite is preferably an intermediate pore size zeolite, and more preferably, is silicalite or ZSM-5. The composite membrane is preferably in the form of a thick film or a hollow fiber. A mixture containing p-xylene and m-xylene can be enriched in p-xylene with a perstractive, pervaporative or gas-phase process through the membrane.

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Method for controlling channel reselection

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The At&T; Wireless Services, Inc. patent solves the following problem:

The present invention is directed to a method for controlling the control channel re-selecting a mobile communication station. Particularly, the invention relates to allow the process of selection conducted only with respect to the candidate to control the canal, to which the mobile station is suitable to camp.

Our analysis of this patent is as follows:

At&T; Wireless Services, Inc.’s patent US 6501951 B2 deals with Method for controlling channel reselection.
A method for selecting control channels in a mobile station reduces the use of resources by limiting the evaluation of candidates to control the drainage canals that satisfy some criteria and are considered to be worthy of control channels. As a result, resources are spent trying to choose a control channel that is not compatible with the mobile station.

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Snare device

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The Primus Medical, Inc. patent solves the following problem:

A clot in the blood vessels of a patient has grave risks for the part of the anatomy of a patient under the clot. Because a clot can inhibit the flow of blood, cells rely on their food passing by obstructed blood vessels die. If the cells particularly necessary in life, like cells with the brain or the heart, the patient may die.

Our analysis of this patent is as follows:

Primus Medical, Inc.’s patent US 6500185 B1 deals with Snare device.
An instrument for the removal of something, like, a blood clot lodged in a blood vessel, having a longitudinally extending support defining an axis. support with a flexible distal section and a rigid proximal section. The flexible distal section has a compressed state, it means a first path relative to the axis. A core wire extending along the axis has a relaxed atmosphere that this means a second path relative to the axis. An anchor thrown into the flexible distal section and attached to the core wire causes the flexible distal section to follow the same path. An actuator engaged to a proximal end of the core wire enables a surgeon to selectively use a tensile force. This tensile force causes the core wire and the flexible distal section to transition together between the first course and second course.

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Stable cosmetic emulsion with polyamide gelling agent

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The Color Access, Inc. patent solves the following problem:

Many gelled cosmetic emulsions dependent on Gellants, waxes, fillers, heavy oil, and plasticizers to improve the structure to create a gel or stick composition. The buildings constructed these agents and materials give the product a balanced rigidity and strength depending on the desired product. For example, in the framework of traditional lipstick that formed in a combination of wax and oil. However, these adjuvants, especially wax, has a disadvantage in that they contribute to the opacity that diminishes the color dyes. The product, therefore, there is a dull, lackluster and pale appearance. To overcome this problem, enhanced amount of dye added to the composition. Another drawback with the addition of wax is that it followed ugly skin and compromised the longevity of waste products. For example, commonly used in many cosmetic products, such as foundation, concealer, eyeliner, and lipstick, that contain these materials are subject to fading, smudging and flaking. These products also have a matte appearance is not always desirable. Furthermore, other adjuvants such as heavy oil feel uncomfortable skin and has a distinct oily feel can also be bad. Therefore, to solve these issues, alternative gelling agent and seek specific polyamides used in gel cosmetic products.

Our analysis of this patent is as follows:

Color Access, Inc.’s patent US 6497861 B1 deals with Stable cosmetic emulsion with polyamide gelling agent.
The present invention relates to a gelled cosmetic emulsion consisting of a portion of oil, an aqueous phase and a gelling system that includes at least one non-siloxane based polyamide with a sufficient amount of gel emulsion. polyamide have a Ester, acid, or wet terminal end group. emulsion stabilized with an alkylene oxide containing emulsion stabilizer. The emulsions of the present invention is substantially transparent and when colorants are added to color is especially bright and clear. The emulsions used in lipstick and mascara products as well as other gel products and staff.

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Chromogenic window assembly construction and other chromogenic devices

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The Donnelly Corporation patent solves the following problem:

This invention relates to chromogenic panels, like glass windows, for vehicular and architectural use, and especially, a chromogenic assembly for use on the sunroof of a car. Furthermore, the invention relates to chromogenic skylights, architectural blocks and window assemblies. Furthermore, the present invention relates to chromogenic light pipes, and the chromogenic airplane window. The present invention also relates to a ship or other marine applications windows.

Our analysis of this patent is as follows:

Donnelly Corporation’s patent US 6493128 B1 deals with Chromogenic window assembly construction and other chromogenic devices.
A chromogenic window panel assembly, and a chromogenic skylight each includes an outer panel and a chromogenic covered with an optical properties that vary according to an applied signal. A chromogenic light pipe includes a light harvest and a chromogenic covered with an optical properties that vary according to an applied signal. A chromogenic car sunroof, a chromogenic airplane window assembly, and a chromogenic windows assembly each include a panel with a particular panel contour corresponds to a face contour and a chromogenic panel with a Optical properties that varies according to an applied signal. A chromogenic block includes two panels and a chromogenic panel with an optical property that varies according to an applied signal.

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Telecommunications system

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The Nortel Networks Limited patent solves the following problem:

The asynchronous transfer mode (ATM) technology is a flexible form of transmission which allows any type of service traffic, voice, video or data, multiplexed together in a common way of transmission . In order for it to be realized, the service traffic must first adapted regularly to 53 Byte cells comprising 5 byte header and 48 byte payloads such that the original traffic can be reconstituted at the far end an ATM network. This kind of adaptation that made the ATM adaptation layer (AAL).

Our analysis of this patent is as follows:

Nortel Networks Limited’s patent US 6493344 B1 deals with Telecommunications system.
An asynchronous transfer mode adaptation layer switch network with independent call routing and connection control for establishing connections throughout the system. A great adaptation layer switching (ALS) with ATM network consists of a group adapted to act as an adaptation layer switch network whose fabric and control the distribution group. network in a way to determine his status current system where to set up multimedia calls over the network based on the status determination.

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Spreader means garment

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The Conrad Spoke patent solves the following problem:

This invention relates to the garments for the human body, and tells more about the bikini-style swimwear.

Our analysis of this patent is as follows:

Conrad Spoke’s patent US 6490732 B1 deals with Spreader means garment.
A bikini-style swimsuit with a diamond-shaped cloth pubic panel 10, and a spreader 22 to speak to the holding pocket 20. spreader gave the left and right edges of the panel 10, tensing the cloth the horizontal axis. A belt 12 and a panel reinforce by fastening horizontal bamboo splits 16 typical building bikini tense panel 10 in the opposition direction to vertical axis. An unexpected combination of forces forced the entire periphery of a diamond-shaped panel 10 being pulled into contact with the body of the wearer in an attractive and trendy.

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Implantable active fixation lead with guidewire tip

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The Medtronic, Inc. patent solves the following problem:

The present invention relates to Implantable electrode leads in general, and especially their leaders adapted for use in the coronary sinus.

Our analysis of this patent is as follows:

Medtronic, Inc.’s patent US 6493591 B1 deals with Implantable active fixation lead with guidewire tip.
A lead adapted to lie in the heart vasculature revealed. Lead can then lead to a desired location in the heart vasculature after that securely located in a desired place walking. lead provided with a better electrode assembly located in the distal tip. The electrode assembly includes a fixation helix and a pattern-like projection, the two came from the distal end of the lead body. The fixation helix, to serve as all or part of the active electrode around a structure equivalent to the distal end of a conventional pattern. The fixation helix mounted around the top pattern so that the sharpened tip of the helix lies closely adjacent the pattern ends, in a region the ideal point sufficiently flexible to allow it to be moved from the sharpened tip of the helix. The pattern in the end, be provided with a preformed curve at its distal end, is used to navigate through leadership in heart vasculature in a fashion similar to the navigation of a catheter and a standard or a combination pattern alone. Achieving the desired location in the heart vasculature, the lead can be rotated to the proposal of one or more instead of the fixation helix heart tissue, the flexibility of standards point to allow it to move from the sharpened tip of the helix during the process that put the lead in tissues.

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Dynamic reconfiguration of a quorum group of processors in a distributed computing system

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The International Business Machines Corporation patent solves the following problem:

Distributed Computing systems using a plurality of processing elements. These processing elements may be individual processors linked to a network or a plurality of software instances operate together in a coordinated environment. In the first case, the processors communicate with each other through a network that supports a network protocol. protocol can be implemented by using a combination of hardware and software components. Processing elements often communicate with each other by sending and receiving messages or packages through a common interface. A form of distributed computing system is a shared without any distribution system where the processing elements as storage. Within such a system, the elements necessary to exchange messages to approval of state-distribution system.

Our analysis of this patent is as follows:

International Business Machines Corporation’s patent US 6490693 B1 deals with Dynamic reconfiguration of a quorum group of processors in a distributed computing system.
Dynamic reconfiguration of a group of processors quorum and recovery gave way So for a shared nothing distributed computing systems. Dynamic reconfiguration from even unavailability of at least one processor group quorum processors believe that a quorum of the remaining processors are. Recovery processing the implementation of the group of processors so that the at least one processor is unavailable during the dynamic reconfiguration of the group was able to obtain current information on the state to become active again . Each processor in the group of processors include a birth number and a list of processors that participated in a process of working resulting in his birth number. The recovery process involves replacing the processors' birth numbers and the list of processors for the propagation of the current state of quorum group processing at least one processor now be available. Determination to relax a quorum number for a quorum operation based on a distributed computing system are also described.

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