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Chao Li
Chao Li, Lexington, KY US
| Patent application number | Description | Published |
|---|---|---|
| 20100003610 | Electrophotographic Roller With Resistance to Nip Banding - An endless electrophotographic member, such as a developer roller, which indicates an improved resistance to nip banding. The improvement to nip banding may be provided by the use of an organic salt within a roller surface region. The roller may provide, at a nip location, a resistive surface layer having an electrical resistance that avoids the development of nip banding and relatively dark regions on printed media. | 01-07-2010 |
Chao Li, Singapore SG
| Patent application number | Description | Published |
|---|---|---|
| 20090289861 | RADIO FREQUENCY COMMUNICATION DEVICES AND METHODS - One embodiment relates to a circuit for efficient wireless communication. The circuit includes an antenna feed and a plurality of communication paths stemming from the antenna feed, where different communication paths are associated with different frequency bands. The circuit also includes a shunt coupled to the antenna feed and adapted to selectively divert power from the antenna feed as a function of shunt control signal. Other methods and systems are also disclosed. | 11-26-2009 |
| 20090291647 | RADIO FREQUENCY COMMUNICATION DEVICES AND METHODS - One embodiment relates to a circuit for efficient wireless communication. The circuit includes a communication port adapted to be coupled to an antenna feed. Multiple communication paths stem from the communication port, where different communication paths are associated with different frequency bands. Multiple phase shift selection circuits are respectively associated with the multiple communication paths. The phase shift selection circuits have different respective impedances relative to the communication port and the respective impedances vary for the different frequency bands. Other methods and systems are also disclosed. | 11-26-2009 |
Chao Li, Hong Kong CN
| Patent application number | Description | Published |
|---|---|---|
| 20090290837 | OPTICAL DEVICES FOR COUPLING OF LIGHT - An optical device and an optical system are provided for coupling of light. The optical device comprises a planar substrate; and an optical waveguiding layer disposed on the planar substrate. The optical waveguiding layer comprises a grating portion for coupling light between a planar waveguide and an optical fiber; and a tapered guiding portion for converting the mode size between the fiber and the planar waveguide. The grating portion comprises a first grating section having non-uniform periods. | 11-26-2009 |
Chao Li, East Lyme, CT US
| Patent application number | Description | Published |
|---|---|---|
| 20090111805 | BICYCLIC HETEROAROMATIC DERIVATIVES USEFUL AS ANTICANCER AGENTS - The invention relates to compounds of the formula I: | 04-30-2009 |
Chao Li, Cambridge GB
| Patent application number | Description | Published |
|---|---|---|
| 20110131690 | Scanning Ion Conductance Microscopy - The subject invention concerns methods for interrogating a surface using scanning ion conductance microscopy (SICM). In one embodiment, a method of the invention comprises the steps of: | 06-02-2011 |
Chao Li, Arcadia, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20110136304 | Techniques to Enhance Selectivity of Electrical Breakdown of Carbon Nanotubes - Techniques are used to fabricate carbon nanotube devices. These techniques improve the selective removal of undesirable nanotubes such as metallic carbon nanotubes while leaving desirable nanotubes such as semiconducting carbon nanotubes. In a first technique, slot patterning is used to slice or break carbon nanotubes have a greater length than desired. By altering the width and spacing of the slotting, nanotubes have a certain length or greater can be removed. Once the lengths of nanotubes are confined to a certain or expected range, the electrical breakdown approach of removing nanotubes is more effective. In a second technique, a Schottky barrier is created at one electrode (e.g., drain or source). This Schottky barrier helps prevent the inadvertent removal the desirable nanotubes when using the electrical breakdown approach. The first and second techniques can be used individually or in combination with each other. | 06-09-2011 |
Chao Li, Redmond, WA US
| Patent application number | Description | Published |
|---|---|---|
| 20110225464 | RESILIENT CONNECTIVITY HEALTH MANAGEMENT FRAMEWORK - A framework is provided for diagnosing and resolving wireless connectivity-related issues. For example, some embodiments of the invention provide a “health monitor” which monitors and logs wireless connectivity-related events occurring on the device, the network, and the one or more resources to which the device is connected. The health monitor may analyze these events and/or other information to determine when a connectivity problem may have arisen, and if a problem is determined to be imminent or to have occurred, may initiate recovery procedures. In some embodiments, the monitoring of events, analysis to determine whether a connectivity problem has arisen, and the recovery from the problem occur transparently to the user. | 09-15-2011 |
Chao Li, Shenzhen CN
| Patent application number | Description | Published |
|---|---|---|
| 20110258447 | METHOD, SYSTEM AND AUTHENTICATION CENTRE FOR AUTHENTICATING IN END-TO-END COMMUNICATIONS BASED ON A MOBILE NETWORK - The invention discloses a method for authenticating in end-to-end communications based on a mobile network, applied to a system including a first service entity requesting a service, a second service entity providing the service and an entity authentication centre, EAC; respectively performing a mutual authentication between the first service entity and the EAC and that between the second service entity and the EAC according to the negotiated authentication mode; if the first service entity requests the second service entity to provide the service, the EAC providing authentication inquiring for the first service entity and the second service entity according to the negotiated authentication mode, and generating a shared derived key according to the negotiated authentication mode; and the first service entity and the second service entity authenticating each other according to the shared derived key and the negotiated authentication mode, and generating a session key for protecting the service. | 10-20-2011 |