Patents by Inventor Christ Tamborski

Christ Tamborski 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: 4640833
    Abstract: Method of X-raying animals using as a contrast agent a perfluorobromoalkyl ether of the formula C.sub.m F.sub.2m+1 OC.sub.n F.sub.2n Br where m and n independently are integers of from 2 to 6, wherein the ether is used either neat or in an aqueous dispersion such as an emulsion.
    Type: Grant
    Filed: March 11, 1985
    Date of Patent: February 3, 1987
    Assignees: Adamantech, Inc., Children's Hospital Research Foundation
    Inventors: Christ Tamborski, Leland C. Clark, Jr.
  • Patent number: 4454349
    Abstract: Fluorinated phosphines having the general formula ##STR1## wherein R.sub.f OR.sub.f -- is a perfluoroalkylether group containing at least one ether linkage are useful as antioxidation additives for perfluorinated fluids.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: June 12, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Christ Tamborski, Carl E. Snyder, Jr., John B. Christian
  • Patent number: 4443349
    Abstract: A lubricant composition comprising a base fluid having the general formulaF[CF(CF.sub.3)CF.sub.2 O].sub.n CHFCF.sub.3wherein n is an integer, and a corrosion inhibiting amount of an aromatic phosphine with perfluorinated polyalkylether substituents having the general formula ##STR1## wherein R.sub.f OR.sub.f -- is a perfluoroalkylether group containing at least one ether linkage.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: April 17, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl E. Snyder, Jr., Christ Tamborski
  • Patent number: 4438007
    Abstract: A lubricant composition comprising a base fluid having the general formulaC.sub.3 F.sub.7 [CF(CF.sub.3)CF.sub.2 O].sub.n CF.sub.2 CF.sub.3wherein n has a value ranging from 5 to 50, and a corrosion-inhibiting amount of an aromatic phosphine with perfluorinated polyalkylether substituents having the general formula ##STR1## wherein R.sub.f OR.sub.f -- is a perfluoroalkylether group containing at least one ether linkage.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: March 20, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl E. Snyder, Jr., Christ Tamborski
  • Patent number: 4438006
    Abstract: A lubricant composition comprising a base fluid having the general formulaR.sub.f O(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n R.sub.fwherein R.sub.f is CF.sub.3 or C.sub.2 F.sub.5, m and n are integers whose sum is between 2 and 200, and the ratio of m to n is between 0.1 and 10, and a corrosion inhibiting amount of an aromatic phosphine with perfluorinated polyalkylether substituents having the general formula ##STR1## wherein R.sub.f OR.sub.f - is a perfluoroalkylether group containing at least one ether linkage.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: March 20, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl E. Snyder, Jr., Christ Tamborski
  • Patent number: 4431555
    Abstract: A grease composition comprising a major amount of a polyfluoroalkylether base fluid of the general formulaC.sub.3 F.sub.7 [CF(CF.sub.3)CF.sub.2)].sub.n CF.sub.2 CF.sub.3 (a)wherein n is an integer having a value in the range of 5 to 50, orF[CF(CF.sub.3)CF.sub.2 O].sub.p CHFCF.sub.3 (b)wherein p is an integer having a value of 1 to 17, a minor amount of a thickener and an oxidation inhibiting amount of a perfluoroalkylether phenylphosphine of the general formula(O).sub.a --P--Ar-CF.sub.2 -R.sub.f OR.sub.f).sub.3wherein a has a value of zero or 1, Ar is a phenylene or perfluorophenylene group, and --R.sub.f OR.sub.f is a perfluoroalkylether group containing at least one ether linkage.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: February 14, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John B. Christian, Christ Tamborski
  • Patent number: 4431556
    Abstract: A grease composition comprising a major amount of a polyfluoroalkylether base fluid of the general formulaAO(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n Bwherein A and B are --CF.sub.3 or --C.sub.2 F.sub.5, and m and n are integers and the sum of m+n is between 2 and 200 and the ratio n/m is in the range of 0.1:1 to 10:1, a minor amount of a thickener and an oxidation inhibiting amount of a perfluoroalkylether phenylphosphine of the general formula ##STR1## wherein a has a value of zero or 1, Ar is a phenylene or perfluorophenylene group, and --R.sub.f OR.sub.f is a perfluoroalkylether group containing at least one ether linkage.
    Type: Grant
    Filed: September 14, 1982
    Date of Patent: February 14, 1984
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John B. Christian, Christ Tamborski
  • Patent number: 4367343
    Abstract: A mixture of tetraalkylsilanes is prepared by reacting a mixture of at least two organometallic compounds with a silicon tetrahalide or an alkyl silicon trihalide. The mixture of silanes is useful as a hydraulic fluid.
    Type: Grant
    Filed: December 31, 1981
    Date of Patent: January 4, 1983
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Christ Tamborski, Carl E. Snyder, Jr.
  • Patent number: 4324673
    Abstract: An antirust, anticorrosion grease composition comprising a major amount of a polyfluoroalkylether base fluid, a minor amount of a fluorocarbon polymer thickening agent, and a rust and corrosion inhibiting amount of a benzimidazole.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: April 13, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John B. Christian, Christ Tamborski
  • Patent number: 4324671
    Abstract: An antirust, anticorrosion grease composition comprising a major amount of a fluorinated polysiloxane base fluid, a minor amount of a fluorocarbon polymer thickening agent, and a rust and corrosion inhibiting amount of a benzimidazole.
    Type: Grant
    Filed: February 10, 1981
    Date of Patent: April 13, 1982
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John B. Christian, Christ Tamborski
  • Patent number: 4267348
    Abstract: Benzimidazoles substituted in the 2-position with a perfluoroalkyleneether radical. The compounds are useful as antirust and anticorrosion additives in grease formulations based on fluorine-containing fluids.
    Type: Grant
    Filed: December 4, 1979
    Date of Patent: May 12, 1981
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Christ Tamborski, John B. Christian
  • Patent number: 4132660
    Abstract: An antirust, anticorrosion grease composition comprising a major proportion of a perfluorinated polyalkylether base fluid, a minor proportion of a fluorocarbon polymer thickening agent, and a rust and corrosion inhibiting amount of a fluorine-containing benzoxazole.
    Type: Grant
    Filed: March 1, 1978
    Date of Patent: January 2, 1979
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: John B. Christian, Christ Tamborski
  • Patent number: 4120863
    Abstract: Benzoxazoles substituted in the 2-position with a perfluoroalkylether radical and bis-benzoxazoles in which the 2-position carbon atoms of the benzoxazole rings are attached to one another with a perfluoroalkylene or perfluoroalkyleneether radical. The compounds are useful as anti-rust additives in grease formulations based on fluorine-containing fluids.
    Type: Grant
    Filed: September 27, 1977
    Date of Patent: October 17, 1978
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Christ Tamborski, John B. Christian
  • Patent number: 4097388
    Abstract: A lubricant composition comprising (1) a base fluid having the following formula:R.sub.f O(CF.sub.2 CF.sub.2 O).sub.m (CF.sub.2 O).sub.n R.sub.f,wherein R.sub.f is a perfluoroalkyl group, m and n are integers whose sum is between 2 and 200 and the ratio of n to m is between 0.1 and 10; and (2) a minor amount of a perfluoroalkylether substituted aryl phosphine.
    Type: Grant
    Filed: October 12, 1976
    Date of Patent: June 27, 1978
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl E. Snyder, Jr., Christ Tamborski
  • Patent number: 4081473
    Abstract: Omega-carbomethoxyperfluoroalkylene ether iodides are reacted with metallic zinc to yield alpha-omega perfluoroalkyleneether diesters. The diesters are reacted with ammonia to form diamides, the diamides are reacted with phosphorus pentoxide to form dinitriles, and the dinitriles are esterified with methanol to form diimidate esters. The diimidate esters are particularly useful as monomers in synthesizing perfluoroalkylene ether bibenzoxazole polymers possessing thermooxidative stability and outstanding low temperature viscoelastic properties.
    Type: Grant
    Filed: October 29, 1976
    Date of Patent: March 28, 1978
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Christ Tamborski
  • Patent number: 4043926
    Abstract: A lubricant comprising a perfluorinated polyalkylether base fluid and a minor amount of a perfluoroalkylether substituted aryl phosphine.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: August 23, 1977
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Carl E. Snyder, Jr., Christ Tamborski
  • Patent number: 4032566
    Abstract: Fluorinated ethers are provided that contain two functional end groups (ester and iodide groups) separated by a plurality of difluoromethylene, fluoro-trifluoromethylmethylene and oxygen groups. The compounds are useful as intermediates, particularly in the synthesis of fluoroalkylether difunctional compounds which can be used in the preparation of improved thermally stable polymers.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: June 28, 1977
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Theodore Psarras, Christ Tamborski
  • Patent number: 4011255
    Abstract: Omega-carbomethoxyperfluoroalkylene ether iodides are reacted with metallic zinc to yield alpha-omega perfluoroalkyleneether diesters. The diesters are reacted with ammonia to form diamides, the diamides are reacted with phosphorus pentoxide to form dinitriles, and the dinitriles are esterfied with methanol to form diimidate esters. The diimidate esters are particularly useful as monomers in synthesizing perfluoroalkylene ether bibenzoxazole polymers possessing thermooxidative stability and outstanding low temperature viscoelastic properties.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: March 8, 1977
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventor: Christ Tamborski
  • Patent number: 4011267
    Abstract: Fluorinated phosphines having the following formula: ##STR1## , where R is a perfluoroalkylether group of fluorine with two of the R's being fluorine, and n is 1, 2 or 3. The fluorinated phosphines are especially useful as anticorrosion and antioxidation additives for perfluorinated fluids.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: March 8, 1977
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Christ Tamborski, Carl E. Snyder, Jr.