Patents by Inventor Lois J. Gschwender

Lois J. Gschwender 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).

  • Patent number: 6218344
    Abstract: Lubricants for satellite applications consist essentially of a base fluid having low volatility and a minor amount, i.e., about 0.1 to 10 weight percent, of a chlorinated tris(phenoxyphenyl)phosphate.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: April 17, 2001
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Lois J. Gschwender, Carl E. Snyder, Jr.
  • Patent number: 5316686
    Abstract: Perfluoroalkylether (PFAE) tertiary mono- and poly-alcohols of the general structure: ##STR1## wherein R.sup.1 and R.sup.3 represent perfluoroalkyl groups having from one to fifty carbon atoms or PFAE groups having 2-50 carbon atoms and 1-49 oxygen atoms; R.sup.2 represents a PFPAE group having 3-50 carbon atoms and 1-48 oxygen atoms; A represents perfluoroalkylene groups containing 2-30 carbon atoms or perfluoroalkyleneether groups having 2-30 carbon atoms and 1-29 oxygen atoms; and n is an integer having a value ranging from zero to ten; and wherein the alcohol contains at least 12 carbon atoms per molecule. The perfluoroalkylether (PFAE) tertiary mono- and poly-alcohols are mixed with perfluoropolyalkylether fluids in an amount ranging from 0.01 to 1.00 weight percent to provide fluids having improved antiwear properties.
    Type: Grant
    Filed: January 11, 1993
    Date of Patent: May 31, 1994
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl E. Snyder, Jr., Lois J. Gschwender, Kalathil C. Eapen, Grace J. Chen
  • Patent number: 5302760
    Abstract: Stability enhancing additives of the formula: ##STR1## where R.sub.f is a perfluoroalkyl group having 1 to 15 carbon atoms and n has a value of 1 to 6, for perfluoropolyalkylether fluids. These additives are incorporated into perfluoropolyalkylether fluids in an amount ranging from about 0.01 to 3 weight percent.
    Type: Grant
    Filed: March 12, 1993
    Date of Patent: April 12, 1994
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Lois J. Gschwender, Carl E. Snyder, Jr.
  • Patent number: 5209861
    Abstract: A high temperature, nonflammable working fluid consisting essentially of about 0.1 to 5.0 w/o of a rust-/corrosion-inhibitor and about 0.01 to 1.0 w/o of a lubricity additive, balance a chlorotrifluoroethylene oligomer base oil, wherein the lubricity additive is a sulfonamide having the formula C.sub.8 F.sub.17 SO.sub.2 N(C.sub.2 H.sub.5)CH.sub.2 CH.sub.2 O(CH.sub.2 CH.sub.2 O).sub.n H, wherein n has a value of 0 to 15, and wherein the rust inhibitor comprises a blend of zinc dinonylnaphthalene sulfonate and a zinc salt of a high molecular weight succinate ester in a weight ratio of about 99:1 to 20:80.
    Type: Grant
    Filed: May 13, 1992
    Date of Patent: May 11, 1993
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Lois J. Gschwender, Carl E. Snyder, Jr.
  • Patent number: 5196130
    Abstract: A tris[4-(chlorophenoxy)phenyl] phosphate of the formula: ##STR1## wherein n has a value of 1 to 5. This compound is effective as a lubricity additive for high temperatures lubricants.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: March 23, 1993
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Lois J. Gschwender, Carl E. Synder, Jr.