Patents by Inventor William Douglas Cramer

William Douglas Cramer 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).

  • Process for making geminal bisphosphonates
    Patent number: 6562974
    Abstract: The present invention relates to a novel process for making geminal bisphosphonates. The process provides for bisphosphorylation using phosphorus trihalide, phosphorous acid as a reactant/solvent, and a base as an acid acceptor/solvent.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: May 13, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Frederick Dana Cazer, William Douglas Cramer, Dennis Michael Billings, Gregory Eugene Parry
  • Process for making geminal bisphosphonates
    Publication number: 20010041690
    Abstract: The present invention relates to a novel process for making geminal bisphosphonates. The process provides for bisphosphorylation using phosphorus trihalide, phosphorous acid as a reactant/solvent, and a base as an acid acceptor/solvent.
    Type: Application
    Filed: January 29, 2001
    Publication date: November 15, 2001
    Inventors: Frederick Dana Cazer, William Douglas Cramer, Dennis Michael Billings, Gregory Eugene Parry