Patents by Inventor Candid Stoffel

Candid Stoffel 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 PREPARATION OF N-CARBOXYANHYDRIDES
    Publication number: 20210253543
    Abstract: The invention discloses a method for the preparation of N-carboxyanhydrides (NCAs) by reaction of amino acids with phosgene.
    Type: Application
    Filed: September 26, 2019
    Publication date: August 19, 2021
    Inventors: Jens SCHMIDT, Candid STOFFEL, Elmar MILLIUS
  • METHOD FOR PREPARATION OF CHLORINATED S-PROPYLTHIOBARBITURIC ACID
    Publication number: 20200207722
    Abstract: The invention discloses a method for preparation of 4,6-dichloro-5-nitro-2-(propylthio)pyrimidine by conversion of 5-nitro-2-propylthiopyrimidine-4,6-diol with phosgene in the presence of DMF.
    Type: Application
    Filed: July 16, 2018
    Publication date: July 2, 2020
    Inventors: Michael BERSIER, Paul HANSELMANN, Candid STOFFEL
  • Method for preparation of chlorinated s-propylthiobarbituric acid
    Patent number: 10689350
    Abstract: The invention discloses a method for preparation of 4,6-dichloro-5-nitro-2-(propylthio)pyrimidine by conversion of 5-nitro-2-propylthiopyrimidine-4,6-diol with phosgene in the presence of DMF.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: June 23, 2020
    Assignee: LONZA LTD
    Inventors: Michael Bersier, Paul Hanselmann, Candid Stoffel