Patents by Inventor Zhongzhen Cai

Zhongzhen Cai 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).

  • Microbial culture medium and cultural method
    Patent number: 9434967
    Abstract: The present invention discloses a microbial culture medium and a cultural method. The culture medium comprises a combination of strong acid-weak alkali salts and strong alkali-weak acid salts so that pH value thereof can be regulated and controlled in a stable and suitable range by itself, thus decreasing or eliminating an operable regulation on pH value via an external device in fermentation process and a risk of contaminations resulted from it in fermentation process as well, accordingly greatly improving the controllability and stability of the fermentation process. Meanwhile the ammonium salts acting as strong acid-weak alkali salts can be used as a nitrogen source to replace yeast cream to realize a decreased amount of nitrogen resource of high price, therefor sharply reducing the cost of the culture medium.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: September 6, 2016
    Assignee: ENN SCIENCE AND TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Minsheng Liu, Qian Feng, Zhongzhen Cai, Lin Wang
  • MICROBIAL CULTURE MEDIUM AND CULTURAL METHOD
    Publication number: 20140093922
    Abstract: The present invention discloses a microbial culture medium and a cultural method. The culture medium comprises a combination of strong acid-weak alkali salts and strong alkali-weak acid salts so that pH value thereof can be regulated and controlled in a stable and suitable range by itself, thus decreasing or eliminating an operable regulation on pH value via an external device in fermentation process and a risk of contaminations resulted from it in fermentation process as well, accordingly greatly improving the controllability and stability of the fermentation process. Meanwhile the ammonium salts acting as strong acid-weak alkali salts can be used as a nitrogen source to replace yeast cream to realize a decreased amount of nitrogen resource of high price, therefor sharply reducing the cost of the culture medium.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 3, 2014
    Applicant: ENN Science and Technology Development Co., Ltd.
    Inventors: Minsheng LIU, Qian Feng, Zhongzhen Cai, Lin Wang