Patents by Inventor Thomas Wessa

Thomas Wessa 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).

  • Synthesis of oxygen-substituted benzocycloheptenes as valuable intermediate products for the production of tissue-selective estrogens
    Patent number: 7321044
    Abstract: The invention relates to intermediate products and a new process for the production of benzocycloheptene C. The process for the production of its new intermediate products according to the invention starts from economical starting materials, provides the intermediate stages in high yields and high purity, without chromatographic purification steps, and allows production on an industrial scale.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: January 22, 2008
    Assignee: Schering Aktiengesellschaft
    Inventors: Johannes Platzek, Wolfgang Beckmann, Jens Geisler, Holger Kirstein, Ulrich Niedballa, Eckhard Ottow, Sigmar Radau, Claudia Schulz, Thomas Wessa
  • Synthesis of oxygen-substituted benzocycloheptenes as valuable intermediate products for the production of tissue-selective estrogens
    Publication number: 20030162974
    Abstract: The invention relates to intermediate products and a new process for the production of benzocycloheptene C.
    Type: Application
    Filed: October 15, 2002
    Publication date: August 28, 2003
    Applicant: Schering AG
    Inventors: Johannes Platzek, Wolfgang Beckmann, Jens Geisler, Holger Kirstein, Ulrich Niedballa, Eckhard Ottow, Sigmar Radau, Claudia Schulz, Thomas Wessa