Patents by Inventor Chang-Guo Wang

Chang-Guo Wang 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).

  • Composition of menthol and menthyl lactate, its preparation method and its applications as a cooling agent
    Patent number: 6897195
    Abstract: Disclosed here is a composition containing menthol and menthyl lactate, and its preparation method and its applications as a cooling agent and a flavoring agent. The present invention provides a composition characterized in that it comprises menthol and menthyl lactate in a ratio by weight in the range of 1:4˜4:1 and the corresponding crystallization point is below room temperature of 25° C. Such composition has the advantages of being liquid at room temperature; easy to use as a cooling agent or a flavoring agent; no need to use heat to melt menthol and menthyl lactate, which not only saves time, money and heating equipment, but also simplifies manufacturing process and can be used in cold processes at room temperature.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: May 24, 2005
    Assignee: Nanjing Zhongshi Chemical Co.
    Inventors: Evelyn G. Su, Chang-Guo Wang
  • Composition of menthol and menthyl lactate, its preparation method and its applications as a cooling agent
    Publication number: 20040018954
    Abstract: Disclosed here is a composition containing menthol and menthyl lactate, and its preparation method and its applications as a cooling agent and a flavoring agent.
    Type: Application
    Filed: July 24, 2002
    Publication date: January 29, 2004
    Inventors: Evelyn G. Su, Chang-Guo Wang