Patents by Inventor Da-Wei Jin

Da-Wei Jin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20170342346
    Abstract: The present invention provides a solid composition comprising a polysaccharide and a hydrophobic compound having a melting point of between 30° C. and 90° C. The solid composition may further comprise a quaternary ammonium compound, wherein the weight ratio of the polysaccharide and the hydrophobic compound is between 1:50 and 50:1. Preferably, the solid composition is substantially free or completely free of water. The solid composition shows excellent stability at a temperature up to 45° C. The present invention also provides a process for preparing the solid composition and a liquid composition comprising said solid composition, and a method for conditioning a fabric by using said solid composition or said liquid composition as well.
    Type: Application
    Filed: December 22, 2014
    Publication date: November 30, 2017
    Inventors: Hai Zhou ZHANG, Nikolay CHRISTOV, Da Wei JIN, Lin HE
  • Publication number: 20170137750
    Abstract: The present invention relates to method for preparing composition containing at least a quaternary ammonium compound, a cationic polysaccharide, a fragrance material or perfume, a nonionic surfactant, and optionally a nonionic polysaccharide. The method notably comprises a step of preparing a premix of the fragrance material or perfume and the nonionic surfactant. Said composition may notably be used for fabric conditioning.
    Type: Application
    Filed: June 18, 2015
    Publication date: May 18, 2017
    Inventors: Hai Zhou ZHANG, Nikolay CHRISTOV, Da Wei JIN, Lin HE
  • Publication number: 20170130164
    Abstract: The present invention relates to a composition, in particular, a fabric conditioning composition, comprising at least a quaternary ammonium compound, a cationic polysaccharide, a nonionic polysaccharide and a fragrance material or perfume. In particular, the quaternary ammonium compound is a biodegradable quaternary ammonium compound. The composition has excellent softening performance and improved perfume longevity.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 11, 2017
    Inventors: Hai Zhou ZHANG, Nikolay CHRISTOV, Da Wei JIN
  • Publication number: 20170130165
    Abstract: The present invention relates to a method for enhancing fragrance or perfume longevity of a composition by adding to the composition (a) a quaternary ammonium compound; (b) a cationic polysaccharide; (c) a nonionic polysaccharide; and (d) a fragrance material or perfume. In particular, the quaternary ammonium compound is a biodegradable quaternary ammonium compound. The composition has improved perfume longevity.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 11, 2017
    Inventors: Hai Zhou ZHANG, Nikolay CHRISTOV, Da Wei JIN
  • Publication number: 20170121639
    Abstract: The present invention relates to a composition, in particular, a fabric conditioning composition, comprising at least a quaternary ammonium compound, a cationic polysaccharide and a nonionic polysaccharide. In particular, the quaternary ammonium compound is a biodegradable quaternary ammonium compound.
    Type: Application
    Filed: June 18, 2014
    Publication date: May 4, 2017
    Inventors: Hai Zhou ZHANG, Nikolay CHRISTOV, Da Wei JIN
  • Publication number: 20170121640
    Abstract: The present invention relates to a method for conditioning a fabric comprising the step of contacting the fabric with an aqueous medium comprising a composition, wherein the composition comprises: (a) a quaternary ammonium compound; (b) a cationic polysaccharide; and (c) a nonionic polysaccharide. In particular, the quaternary ammonium compound is a biodegradable quaternary ammonium compound. The composition has excellent softening performance and improved perfume longevity. The present invention also relates to use of said composition for conditioning a fabric.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 4, 2017
    Inventors: Hai Zhou ZHANG, Nikolay CHRISTOV, Da Wei JIN
  • Patent number: 8242637
    Abstract: A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: August 14, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Shi-Tao Chen, Sheng-Chung Huang, Hsiang-Jui Hung, Da-Wei Jin, Lei Yang, Yong-Xian Zhao
  • Publication number: 20100231048
    Abstract: A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit.
    Type: Application
    Filed: June 3, 2009
    Publication date: September 16, 2010
    Applicants: HONG FU JIN PRECISION INDUSTRY(ShenZhen) Co., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: SHI-TAO CHEN, SHENG-CHUNG HUANG, HSIANG-JUI HUNG, DA-WEI JIN, LEI YANG, YONG-XIAN ZHAO