Patents by Inventor Steven R. Masuda

Steven R. Masuda 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).

  • Rust inhibiting phosphate ester formulations
    Patent number: 5779774
    Abstract: Mixtures of alkylaromatic secondary phosphate and tertiary phosphate esters prepared by reaction of phosphonyl chloride and primary phosphonyl chlorides with alkylaromatic phenols are disclosed as rust inhibiting additives for hydrocarbon based fluids.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: July 14, 1998
    Inventors: Kazimiera J. L. Paciorek, Steven R. Masuda
  • Perfluoroalkyl and perfluoroalkylether substituted aromatic phosphates, phosphonates and related compositions
    Patent number: 5550277
    Abstract: Perfluoroalkyl and perfluoroalkylether substituted aromatic phosphates, phosphonates and related compositions prepared by reaction of pefluoroalkyl or pefluoroakylether substituted phenols with mono- and dihalophosphite and primary and secondary phosphonyl halides are disclosed. These materials are useful as antioxidant, anticorrosion, antirust, and lubricity enhancing agents for perfluoropolyalkylether fluids.
    Type: Grant
    Filed: January 19, 1995
    Date of Patent: August 27, 1996
    Inventors: Kazimiera J. L. Paciorek, Wen-Huey Lin, Steven R. Masuda, James H. Nakahara
  • Monophospha-S-triazines of improved hydrolytic and thermal oxidative stability
    Patent number: 5326910
    Abstract: Hydrolytically and thermooxidatively stable monophospha-s-triazines prepared by reaction of octafluoroisobutylene epoxide with an acid fluoride followed by transformation of the resultant product into an amide, then into a nitrile, reacting the nitrile with ammonia and reacting the imidoylamidine resulting from the previous steps with di-aryltrihalophosphorane to produce mono-phospha-s-triazines that are useful as antioxidant - anticorrosion agents for perfluoroalkylether fluids are disclosed.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: July 5, 1994
    Assignee: Lubricating Specialties Co.
    Inventors: Kazimiera J. L. Paciorek, Steven R. Masuda, Wen-Huey Lin
  • Polymeric perfluoroalkylether-linked quinoxalines
    Patent number: H1668
    Abstract: Perfluoroalkylether-linked quinoxalines having repeating units of the formula: ##STR1## wherein R.sub.f is selected from the group consisting of --OCF.sub.2 CF.sub.2 --, --OCF.sub.2 CF.sub.2 CF.sub.2 --, --OCF.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 --, --OCF.sub.2 CF(CF.sub.3)-- and --OCF.sub.2 CF.sub.2 OCF.sub.2 CF(CF.sub.3)--; wherein n has a value of 2 to 4, and m has a value of 1 to 20; and wherein R is a single bond, --O--, --S--, --C.sub.6 H.sub.4 --O--C.sub.6 H.sub.4 --, or --SO.sub.2 --, are prepared by the steps of(a) preparing a perfluoroalkylether diiodide of the formula I(CF.sub.2).sub.n (R.sub.f).sub.m (CF.sub.2).sub.n l;(b) reacting the perfluoroalkylether diiodide with 4-iodobenzil to produce the tetraketone C.sub.6 H.sub.5 C(O)C(O)C.sub.6 H.sub.4 (CF.sub.2).sub.n (R.sub.f).sub.m (CF.sub.2).sub.n C.sub.6 H.sub.4 C(O)C(O)C.sub.6 H.sub.5 ; and(c) reacting the resulting tetraketone with a tetraamine of the formula ##STR2## wherein R is a single bond, --O--, --S--, --C.sub.6 H.sub.4 O--C.sub.6 H.sub.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: July 1, 1997
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Kazimiera J. L. Paciorek, Steven R. Masuda, Wen-Huey Lin, William M. Warner