Patents by Inventor Bobbie J. Ramey, deceased

Bobbie J. Ramey, deceased 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).

  • Modified diphenylmethane diisocyanates useful in polyurethanes or polyisocyanurates
    Patent number: 4221877
    Abstract: Covers a water-modified diisocyanate mixture obtained from water-treating a diphenylmethane diisocyanate to provide a diisocyanate mixture comprising 3-25 percent by weight of diphenylmethane biuret isocyanate and 75-97 percent diphenylmethane diisocyanate. Also covers the use of said water-modified diphenylmethane diisocyanate in preparing an improved polyurethane or polyisocyanurate polymer. Also covers said polymers.
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: September 9, 1980
    Assignee: Texaco Development Corp.
    Inventors: Michael Cuscurida, Robert L. Zimmerman, Bobbie J. Ramey, deceased