Patents by Inventor Ralph Rudzinski

Ralph Rudzinski 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 removal of dimethyl ether in the synthesis of sevoflurane
    Patent number: 6448451
    Abstract: The invention provides a process for purifying methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether, comprising: passing a composition comprising methyl 2,2,2-trifluoro-1-(trifluoromethyl)ethyl ether and dimethyl ether through an evaporation zone; evaporating dimethyl ether by passing a gas stream through the composition; and removing the gas comprising dimethyl ether from the composition.
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: September 10, 2002
    Assignee: Baxter International, Inc.
    Inventors: Ralph Rudzinski, Ralph Lessor