Patents by Inventor Hyman R. Lubowtiz

Hyman R. Lubowtiz 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).

  • Multiple chemically functional oligomer blends
    Patent number: 5756597
    Abstract: Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities of the general formula: ##STR1## in the oligomers, wherein ##STR2## .beta.=the residue an organic radical selected from the group consisting of: ##STR3## R.sub.8 =a divalent organic radical; X=halogen;Me=methylT=allyl or methallyl,G=--CH.sub.2 --, --S--, --CO--, --SO--, --O--, --CHR.sub.3 --, or --C(R.sub.3).sub.2 --;i=1 or 2;R.sub.3 =hydrogen, lower alkyl, lower alkoxy, aryl, or aryloxy; and.THETA.=--C.tbd.N, --O--C.tbd.N, --S--C.tbd.N, or --CR.sub.3 .dbd.C(R.sub.3).sub.2.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: May 26, 1998
    Assignee: The Boeing Company
    Inventors: Hyman R. Lubowtiz, Clyde H. Sheppard
  • Method for making multiple chemically functional oligomers
    Patent number: 5714566
    Abstract: Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities of the general formula: ##STR1## in the oligomers, wherein Z= ##STR2## .beta.=the residue an organic radical selected from the group consisting of: ##STR3## --O--.O slashed.--COOH, --O--.O slashed.--COX, --X, --O.paren open-st.(R.sub.8 .paren close-st.OH, ##STR4## --O--.O slashed.--NH.sub.2 ; E= ##STR5## R.sub.8 =a divalent organic radical; X=halogen;Me=methylT=allyl or methallyl.G=--CH.sub.2 --, --S--, --CO--, --SO--, --O--, --CHR.sub.3 --, or --C(R.sub.3).sub.2 --;i=1 or 2;R.sub.3 =hydrogen, lower alkyl, lower alkoxy, aryl, or aryloxy; and.THETA.=--C.tbd.N; --O--C.tbd.N, --S--C.tbd.N, or --CR.sub.3 .dbd.C(R.sub.3).sub.2.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: February 3, 1998
    Assignee: The Boeing Company
    Inventors: Hyman R. Lubowtiz, Clyde H. Sheppard
  • Multiple chemically functional end cap monomers
    Patent number: 5610317
    Abstract: Thermomechanical and thermo-oxidative stabilities in resin composites across the range of aerospace "engineering thermoplastic" resins are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities of the general formula: ##STR1## .beta.=the residue an organic radical selected from the group consisting of: ##STR2## R.sub.8 =a divalent organic radical; X=halogen;Me=methylT=allyl or methallyl.G=--CH.sub.2 --, --S--, --CO--, --SO--, --O--, --CHR.sub.3 --, or --C(R.sub.3).sub.2 --;i=1 or 2;R.sub.3 =hydrogen, lower alkyl, lower alkoxy, aryl, or aryloxy; and.THETA.=--C.tbd.N, --O--C.tbd.N, --S--C.tbd.N, or --CR.sub.3 .dbd.C(R.sub.3).sub.2.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 11, 1997
    Assignee: The Boeing Company
    Inventors: Hyman R. Lubowtiz, Clyde H. Sheppard
  • Heterocycle or heterocycle sulfone oligomers with multiple chemically functional end caps
    Patent number: 5594089
    Abstract: Thermomechanical and thermo-oxidative stabilities in heterocycle or heterocycle sulfone resin composites are improved by forming four crosslinks at each addition polymerization site in the backbone of the resin using crosslinking functionalities.
    Type: Grant
    Filed: October 21, 1994
    Date of Patent: January 14, 1997
    Assignee: The Boeing Company
    Inventors: Hyman R. Lubowtiz, Clyde H. Sheppard