Chuntao

Chuntao Li, Hai'An CN

Patent application number	Description	Published
20080275231	Method for Preparing Regenerated Cellulose Fiber by Two-Step Coagulating Bath Process - The present invention relates to a non-toxic process and system for pilot-scale production of cellulose products, and particularly to a process and system for pilot-scale production of cellulose products by using aqueous sodium hydroxide/urea solution pre-colled to lower than −8° C., in which cellulose could dissolved rapidly. The said process and system can be used to produce fibers, films, chromatographic packings, or nonwovens of regenerated cellulose, as well as to produce a variety of high added-value products by adding other materials such as functional materials, nano-materials, etc.	11-06-2008
20080284054	Use of Aqueous Naoh/Thiourea Solution in Pilot-Scale Production of Cellulose Products - The present invention relates to the use of an aqueous sodium hydroxide/thiourea solution, specifically to the use of an aqueous sodium hydroxide/thiourea solution for pilot-scale production of cellulose products, wherein sodium hydroxide constitutes 8.1%-12.0% of the total weight of the aqueous solution, thiourea constitutes 3.0%-6.0% of the total weight of the aqueous solution, and said cellulose products include regenerated cellulose filaments, films, nonwovens, as well as composite fibers and/or functional materials of protein/cellulose, chitin/cellulose, Konjac Glucomannan/cellulose, nano-crystal particle/cellulose, etc.	11-20-2008

Patent application number	Description	Published
20090154494	Method and system for service application and service application control agent - A service application method and system, and a service application control agent (SACA) for reducing the delay of service application are provided. The method includes the following steps. An SACA receives service application information sent from a customer premises equipment (CPE). The SACA queries for Quality of Service (QoS) parameters corresponding to the service according to the service application information. Resource authorization and reservation request information containing the QoS parameters is sent to a resource and admission control unit. The resource and admission control unit verifies the request information to be authorized and admitted, and delivers a control strategy to a transport unit after the verification is passed. A service application system and an SACA are also provided correspondingly.	06-18-2009

Patent application number	Description	Published
20100315152	CONTROL METHOD FOR SOFT SWITCH CIRCUIT IN SWITCH POWER SUPPLY - The present invention relates to a control method for a soft switch circuit in a switch power supply, which controls first and second main power switch devices to be turned on and turned off constantly to generate an alternating main power filter current, and controls forward and backward auxiliary switch devices to be turned on and turned off to generate an intermittent alternating resonant current across a resonant branch in the same direction as the main power filter current to thereby achieve zero-voltage turn-on of the first and second main power switch devices; and further controls the forward and backward auxiliary switch devices to be turned on and turned off to generate compensation currents across the resonant branch in the opposite direction to the alternating main power filter current in at least a period of time during resting of the resonant current to thereby accomplish a charging and discharging process of resonant capacitors in a dead time. Thus, a freewheeling diode can be turned on normally, so that it is possible to avoid a damage to the devices due to an impact current and a spark voltage resulting at zero crossing of the current in the soft switch circuit.	12-16-2010