Patents by Inventor Yifang Zhao

Yifang Zhao 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).

  • Patent number: 11928132
    Abstract: Provided are a database processing method and apparatus, and a computer readable storage medium. The database processing method comprises: after a lock wait is generated, writing lock wait related information into a lock wait log.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: March 12, 2024
    Assignee: XI'AN ZHONGXING NEW SOFTWARE CO., LTD.
    Inventors: Pin Lin, Yan Ding, Qinyuan Lu, Chen Qi, Yifang Yu, Pei Zhao
  • Publication number: 20160068439
    Abstract: This invention provides a moldable engineered stone composition comprising an ethylenically unsaturated acrylic polymer capable of being covalently crosslinked, a mineral particulate, and an ionic crosslinking agent which forms ionic bonds within the syrup of unsaturated acrylic polymer via unreacted acid groups, causing thickening prior to curing and prior to the formation of covalent bonds via the double bonds of the polymer chain. The composition is then capable of being extruded and molded in a press. Articles formed by curing the composition and methods for producing the composition are also disclosed.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 10, 2016
    Applicant: Safas corporation
    Inventor: Yifang Zhao
  • Patent number: 9260344
    Abstract: This invention provides a moldable engineered stone composition comprising an ethylenically unsaturated acrylic polymer capable of being covalently crosslinked, a mineral particulate, and an ionic crosslinking agent which forms ionic bonds within the syrup of unsaturated acrylic polymer via unreacted acid groups, causing thickening prior to curing and prior to the formation of covalent bonds via the double bonds of the polymer chain. The composition is then capable of being extruded and molded in a press. Articles formed by curing the composition and methods for producing the composition are also disclosed.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: February 16, 2016
    Assignee: SAFAS CORPORATION
    Inventor: Yifang Zhao
  • Patent number: 8128999
    Abstract: A sprayable granite-like coating composition useful for forming simulated stone surfaces, such as polished granite, which have improved fire resistance. The coating composition comprises gel resin matrix based on unsaturated crosslinkable polyester or acrylic resins, a free radical initiator for such resin, a hydrated inorganic salt, granules comprising thermoset resins or mixtures of thermoplastic and thermoset resins containing an inorganic filler and as a binding agent comprising the acrylate phosphate.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: March 6, 2012
    Assignee: Safas Corporation
    Inventors: Akbar Ghahary, Yifang Zhao
  • Patent number: 7727435
    Abstract: The present invention relates to an engineered stone composite produced from a mineral aggregate, a synthetic resin and a binder using compression and vibration to obtain a high strength mineral composite with a high mineral content and a method for its preparation.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: June 1, 2010
    Assignee: SAFAS Corporation
    Inventors: Akbar Ghahary, Yifang Zhao
  • Patent number: 7442726
    Abstract: A sprayable granite-like coating composition useful for forming simulated stone surfaces, such as polished granite, such surfaces having high-impact strength, superior hardness and an aesthetically pleasing look. The coating composition comprises gel resin matrix based on unsaturated crosslinkable polyester or acrylic resins, a curing accelerator composition and granules comprising thermoset resins or mixtures of thermoplastic and thermoset resins. The gel coat resins and the granules are visually differentiable, substantially immiscible and substantially equal in density. The composition, is characterized by forming coatings of uniform thickness and quick curing that even at low thickness provides a uniform granite appearance.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: October 28, 2008
    Assignee: SAFAS Corporation
    Inventors: Akbar Ghahary, Yifang Zhao
  • Publication number: 20070244222
    Abstract: The present invention relates to an engineered stone composite produced from a mineral aggregate, a synthetic resin and a binder using compression and vibration to obtain a high strength mineral composite with a high mineral content and a method for its preparation.
    Type: Application
    Filed: April 18, 2006
    Publication date: October 18, 2007
    Inventors: Akbar Ghahary, Yifang Zhao
  • Publication number: 20070125990
    Abstract: A sprayable granite-like coating composition useful for forming simulated stone surfaces, such as polished granite, which have improved fire resistance. The coating composition comprises gel resin matrix based on unsaturated crosslinkable polyester or acrylic resins, a free radical initiator for said resin, a hydrated inorganic salt, granules comprising thermoset resins or mixtures of thermoplastic and thermoset resins containing an inorganic filler and as a binding agent comprising the acrylate phosphate.
    Type: Application
    Filed: December 6, 2005
    Publication date: June 7, 2007
    Inventors: Akbar Ghahary, Yifang Zhao
  • Publication number: 20060281831
    Abstract: A sprayable granite-like coating composition useful for forming simulated stone surfaces, such as polished granite, such surfaces having high-impact strength, superior hardness and an aesthetically pleasing look. The coating composition comprises gel resin matrix based on unsaturated crosslinkable polyester or acrylic resins, a curing accelerator composition and granules comprising thermoset resins or mixtures of thermoplastic and thermoset resins. The gel coat resins and the granules are visually differentiable, substantially immiscible and substantially equal in density. The composition, is characterized by forming coatings of uniform thickness and quick curing that even at low thickness provides a uniform granite appearance.
    Type: Application
    Filed: May 27, 2005
    Publication date: December 14, 2006
    Inventors: Akbar Ghahary, Yifang Zhao