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Aiqin
Aiqin Wang, Dalian CN
| Patent application number | Description | Published |
|---|---|---|
| 20110046419 | METHOD FOR PRODUCING ETHYLENE GLYCOL FROM POLYHYDROXY COMPOUND - A method for producing ethylene glycol, including (a) adding a polyhydroxy compound and water to a sealed high-pressure reactor, (b) removing air and introducing hydrogen, and (c) allowing the polyhydroxy compound to react in the presence of a catalyst while stiffing. The catalyst includes a first active ingredient and a second active ingredient. The first active ingredient includes a transition metal of Group 8, 9, or 10 selected from iron, cobalt, nickel, ruthenium, rhodium, palladium, iridium, and platinum, and/or a mixture thereof. The second active ingredient includes a metallic state of molybdenum and/or tungsten, or a carbide, nitride, or phosphide thereof. The method is carried out at a hydrogen pressure of 1-12 MPa, at a temperature of 120-300° C. for not less than 5 min in a one-step catalytic reaction. The efficiency, selectivity, and the yield of ethylene glycol are high. The preparation process is simple and the materials used are renewable. | 02-24-2011 |
Aiqin Wang US
| Patent application number | Description | Published |
|---|---|---|
| 20110312050 | CONTINUOUS CATALYTIC GENERATION OF POLYOLS FROM CELLULOSE - A catalytic process for generating at least one polyol from a feedstock comprising cellulose is performed in a continuous manner using a catalyst comprising nickel tungsten carbide. The process involves, contacting, continuously, hydrogen, water, and a feedstock comprising cellulose, with the catalyst to generate an effluent stream comprising at least one polyol and recovering the polyol from the effluent stream. | 12-22-2011 |
| 20110313212 | CONTINUOUS CATALYTIC GENERATION OF POLYOLS FROM CELLULOSE WITH RECYCLE - A catalytic process for generating at least one polyol from a feedstock comprising cellulose is performed in a continuous manner. The process involves, contacting, continuously, hydrogen, water, and a feedstock comprising cellulose, with a catalyst to generate an effluent stream comprising at least one polyol, water, hydrogen, and at least one co-product. The water, hydrogen, and at least one co-product are separated from the effluent stream and recycled to the reaction zone. The polyol is recovered from the effluent stream. | 12-22-2011 |
Aiqin Zhang, Shenzhen CN
| Patent application number | Description | Published |
|---|---|---|
| 20090022072 | METHOD AND APPARATUS FOR PROCESSING MEDIA STREAM QUEUES BASED ON CONTROL - A control-based method for processing media stream queues includes: a multimedia control entity processes the talk burst request queues corresponding to different media types when the conditions of triggering processing of different talk bursts are satisfied; and the multimedia control entity sends the assigned talk burst to the corresponding multimedia session terminal. The present invention also provides a corresponding apparatus. By processing the media stream queues, the present invention ensures talk bursts of multiple correlated media types to be assigned in a session. | 01-22-2009 |
| 20090024743 | MEDIA SESSION DATA TRANSMISSION CONTROL METHOD, CONTROL RELATION NEGOTIATION METHOD AND CONTROL DEVICE AND SYSTEM - A media session data transmission control method, a control relation negotiation method and a control device and a system thereof. The data transmission control method includes: the server obtains the media transmission right request of the sender (S | 01-22-2009 |
| 20110044455 | Method, Apparatus and System for Key Derivation - A method, an apparatus and a system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communications system are also provided. | 02-24-2011 |
| 20110072488 | METHOD AND APPARATUS FOR AUTHENTICATION - A method and an apparatus for authentication are disclosed. The method includes: deciding to release a connection or continue a current service according to native information and network policy after an AKA authentication procedure fails. When the EPS AKA authentication procedure fails, the connection is not released immediately in the present invention, but the connection is released or the current service is continued according to the native information and network policy, thus avoiding unnecessary release of connections and saving resources. | 03-24-2011 |
| 20110165870 | Method, Apparatus and System for Key Derivation - A method, an apparatus and a system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communications system are also provided. | 07-07-2011 |
| 20110287773 | Method, Apparatus and System for Key Derivation - A method, an apparatus and a system for key derivation are disclosed. The method includes the following steps: a target base station) receives multiple keys derived by a source base station, where the keys correspond to cells under control of the target base station; the target base station selects a key corresponding to the target cell after knowing a target cell that a user equipment (UE) wants to access. An apparatus for key derivation and a communications system are also provided. | 11-24-2011 |
Aiqin Zhang, Shanghai CN
| Patent application number | Description | Published |
|---|---|---|
| 20120039472 | METHOD AND DEVICE FOR ESTABLISHING A SECURITY MECHANISM FOR AN AIR INTERFACE LINK - A method, a device, and a system for establishing a security mechanism for an air interface are provided in embodiments of the present invention. The method includes: performing security processing for a shared key of an access link according to a shared key between a relay node and a mobility management entity; and sending the shared key of the access link after the security processing to the relay node to enable the relay node to obtain the shared key of the access link based on the shared key between the relay node and the mobility management entity. The present invention reduces the possibility at which the air interface link is hacked, thereby improving the security of the air interface link. | 02-16-2012 |