Patents by Inventor Paul A. Wood, III

Paul A. Wood, III 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).

  • Bis(maleimido) phenoxy phenylphosphine oxide
    Patent number: 5101037
    Abstract: Bis(maleimido) phenoxy phenylphosphine oxide monomers are formed by reacting a bis(aminophenoxyphenyl) phosphine oxide, e.g., bis(3-aminophenoxy) triphenylphosphine oxide, with maleic anhydride forming the intermediate bismaleamic acid species which is cyclodehydrated to the desired bismaleimido compound. The improved properties include: (1) a low melting point (T.sub.m =90.degree. C.); (2) a wide processing temperature range (T.sub.cure =210.degree. C.); and (3) a high T.sub.g value of 400.degree. C.; and (4) a high char yield which suggests flame resistance.
    Type: Grant
    Filed: August 27, 1991
    Date of Patent: March 31, 1992
    Assignee: Virginia Tech Intellectual Properties, Inc.
    Inventors: James E. McGrath, Paul A. Wood, III