Patents by Inventor Tom Sifferman

Tom Sifferman 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).

  • Alginate gels
    Patent number: 5596084
    Abstract: The invention is a gel comprising water, sodium ions, calcium ions, and about 0.3 and 4% alginate, wherein the ratio of sodium ions to calcium ions is between about 15:1 to about 45:1. In a preferred embodiment of the invention, the alginate comprises mannuronic acid and guluronic acid in a weight ratio of between about 2:1 and 0.35:1.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: January 21, 1997
    Assignee: Monsanto Company
    Inventors: George R. Sanderson, Dave Ortega, Tom Sifferman