Patents by Inventor Chuanhua HE

Chuanhua HE 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).

  • Catalyst for oxidation reactions, a method for its preparation and the use thereof
    Patent number: 10052620
    Abstract: The present invention relates to a catalyst for oxidation reactions, particularly for oxidation of mercaptan dialkyldisulfides and/or dialklypolysulfides with oxygen to alkanesulfonic acids.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: August 21, 2018
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Chuanhua He, Benjamin Fonfe, Harald Jakob, Xiangyu Yang
  • Process for preparing alkanesulfonic acids
    Patent number: 10023531
    Abstract: The present invention relates to a process for preparing alkanesulfonic acids from dialkyl disulfides with nitric acid and oxygen.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: July 17, 2018
    Assignee: EVONIK DEGUSSA GmbH
    Inventors: Benjamin Fonfe, Harald Jakob, Chuanhua He, Andreas Doerflein, Sebastian Fuss
  • CATALYST FOR OXIDATION REACTIONS, A METHOD FOR ITS PREPARATION AND THE USE THEREOF
    Publication number: 20180133704
    Abstract: The present invention relates to a catalyst for oxidation reactions, particularly for oxidation of mercaptan dialkyldisulfides and/or dialklypolysulfides with oxygen to alkanesulfonic acids.
    Type: Application
    Filed: December 4, 2014
    Publication date: May 17, 2018
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Chuanhua HE, Benjamin FONFE, Harald JAKOB, Xiangyu YANG
  • PROCESS FOR PREPARING ALKANESULFONIC ACIDS
    Publication number: 20160304446
    Abstract: The present invention relates to a process for preparing alkanesulfonic acids from dialkyl disulfides with nitric acid and oxygen.
    Type: Application
    Filed: December 10, 2014
    Publication date: October 20, 2016
    Applicant: EVONIK DEGUSSA GMBH
    Inventors: Benjamin FONFE, Harald JAKOB, Chuanhua HE, Andreas DOERFLEIN, Sebastian FUSS