Patents by Inventor Zongming Yi

Zongming Yi 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).

  • Method for preparing methanedisulfonic acid
    Patent number: 9440915
    Abstract: Disclosed is a method for preparing methanedisulfonic acid, comprising an acidification, wherein the acidification comprises that methanedisulfonate reacts with an acidifier to form a mixture containing methanedisulfonic acid. The disclosure has high yield, low cost, and the process are environmental friendly.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: September 13, 2016
    Assignee: HUNAN ASTAR BIO-CHEMICAL TECHNOLOGY CO., LTD.
    Inventor: Zongming Yi
  • Method for preparing methanedisulfonic acid
    Publication number: 20150353484
    Abstract: Disclosed is a method for preparing methanedisulfonic acid, comprising an acidification, wherein the acidification comprises that methanedisulfonate reacts with an acidifier to form a mixture containing methanedisulfonic acid. The disclosure has high yield, low cost, and the process are environmental friendly.
    Type: Application
    Filed: September 28, 2012
    Publication date: December 10, 2015
    Applicant: HUNAN ASTAR BIO-CHEMICAL TECHNOLOGY CO., LTD.
    Inventor: Zongming Yi
  • Non-halogen activating agent used as flux
    Patent number: 8853417
    Abstract: A non-halogen active agent for a flux is a sulfonate formed by a sulfonic acid reacting with an organic base. The sulfonic acid can be an alkyl sulfonic acid, alkyl disulfonic acid, hydroxyl sulfonic acid or halogenated sulfonic acid. The organic base can be an organic amine, carbamidine, imidazole, phosphorus. The non-halogen active agent for a flux has the advantage of high activity and low corrosion.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: October 7, 2014
    Assignee: Hunan Astar Biotechnology Ltd.
    Inventors: Zongming Yi, Yi Liu
  • Non-halogen activating agent used as flux
    Publication number: 20120142938
    Abstract: A non-halogen active agent for a flux is a sulfonate formed by a sulfonic acid reacting with an organic base. The sulfonic acid can be an alkyl sulfonic acid, alkyl disulfonic acid, hydroxyl sulfonic acid or halogenated sulfonic acid. The organic base can be an organic amine, carbamidine, imidazole, phosphorus. The non-halogen active agent for a flux has the advantage of high activity and low corrosion.
    Type: Application
    Filed: March 8, 2010
    Publication date: June 7, 2012
    Applicant: HUNAN ASTAR BIOTECHNOLOGY LTD
    Inventors: Zongming Yi, Yi Liu