Patents by Inventor Andrew D. Rowan

Andrew D. Rowan 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).

  • Cysteine proteinases, production and use
    Patent number: 5106621
    Abstract: A cysteine proteinase characterized in that it is immunologically distinct, has a molecular mass of about 25,000 and has a distinct net charge is disclosed. "Ananain" and "comosain" are such enzymes, which may be distinguished by their specificities for certain synthetic substrates.A process for the production thereof is also disclosed which comprises separation from pineapple plant material and purification. Such enzymes may be used in the debridement of eschar tissues.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: April 21, 1992
    Inventors: Andrew D. Rowan, David J. Buttle