Patents by Inventor Wilhelm P. Neumann

Wilhelm P. Neumann 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 making organotin halides
    Patent number: 4604475
    Abstract: A method for making organotin halides of the formula R.sub.3 SnX, R.sub.2 SnX.sub.2, or RSnX.sub.2 by the redistribution of appropriate mixtures of organotin compounds in the presence of stannous fluoride as a catalyst.
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: August 5, 1986
    Assignee: Schering AG
    Inventors: Max Buschhoff, Wilhelm P. Neumann