Patents by Inventor John T. Lileck

John T. Lileck 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).

  • Process for the production of high purity zirconium tetrafluoride and other fluorides
    Patent number: 4983373
    Abstract: High purity metal fluorides (ZrF.sub.4, HfF.sub.4, AlF.sub.3) are produced by incomplete reaction of metal or their compounds with elemental fluorine and subsequent elevated temperature sublimation of the metal fluoride from the reaction products wherein unreacted metal or metal compounds act as "getters" to convert volatile impurity metal fluorides to non-volatile metals or metal compounds.
    Type: Grant
    Filed: November 23, 1988
    Date of Patent: January 8, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Howard P. Withers, Jr., Andrew J. Woytek, John T. Lileck
  • Perfluorinated 2-ISO propyl derivative compounds
    Patent number: 4925992
    Abstract: A novel composition of the formula: ##STR1## wherein the carbon rings are fully fluorinated.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 15, 1990
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frank K. Schweighardt, Webb I. Bailey, John T. Lileck, John K. Graybill, Eugene G. Lutz
  • Perfluorinated propyl derivative compounds for vapor bath soldering
    Patent number: 4901910
    Abstract: A method of vapor bath soldering wherein vapor bath compositions include compounds of the formula: ##STR1## wherein the carbon rings are fully fluorinated and R is selected from the group consisting of fluorine, --CF.sub.3 or --CF(CF.sub.3).sub.2.
    Type: Grant
    Filed: March 27, 1989
    Date of Patent: February 20, 1990
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frank K. Schweighardt, Webb I. Bailey, John T. Lileck, John K. Graybill, Eugene G. Lutz
  • Perfluorinated propyl derivative compounds
    Patent number: 4885414
    Abstract: Novel compositions include compounds of the formula: ##STR1## wherein the carbon rings are fully fluorinated.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: December 5, 1989
    Inventors: Frank K. Schweighardt, Webb I. Bailey, John T. Lileck, John K. Graybill, Eugene G. Lutz
  • Perfluorinated propyl derivative compounds
    Patent number: 4873315
    Abstract: Novel compositions include compounds of the formula: ##STR1## wherein the carbon rings are fully fluorinated and R is selected from the group consisting of fluorine, --CF.sub.3 or --CF(CF.sub.3).sub.2.
    Type: Grant
    Filed: August 25, 1987
    Date of Patent: October 10, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frank K. Schweighardt, Webb I. Bailey, John T. Lileck, John K. Graybill, Eugene G. Lutz
  • Perfluoro-1,1-di(orthoxylyl)alkyl compounds
    Patent number: 4801761
    Abstract: Novel compositions of matter are disclosed; perfluoro-1,1-di(orthoxylyl) methane, perfluoro-1,1-di(orthoxylyl) ethane and perfluoro-1,1-di(orthoxylyl) propane. The compositions are made by cobalt trifluoride fluorination of 1,1-di(orthoxylyl) methane, 1,1-di(orthoxylyl) ethane and 1,1-di(orthoxylyl) propane. The compositions have utility as vapor phase soldering fluids.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: January 31, 1989
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Webb I. Bailey, John T. Lileck
  • Method and apparatus for perforating or cutting with a solid fueled gas mixture
    Patent number: 4446920
    Abstract: A method for cutting pipe casings and concrete liners or perforating the same and localized portions of surrounding strata in an earth bore is set forth wherein a gas phase cutting or perforating jet mixture of fluorine and nitrogen trifluoride is delivered to the cutting or perforation site from the decomposition of a solid, normally stable, perfluoroammonium salt. An appropriate apparatus for delivering the gas mixture of fluorine and nitrogen trifluoride from the salt is also disclosed.
    Type: Grant
    Filed: January 13, 1983
    Date of Patent: May 8, 1984
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Andrew J. Woytek, John T. Lileck, Edward J. Steigerwalt
  • Removal of dinitrogen difluoride from nitrogen trifluoride
    Patent number: 4193976
    Abstract: This invention relates to a process for purifying a nitrogen trifluoride containing atmosphere contaminated with dinitrogen difluoride. The atmosphere is purified by heating the nitrogen trifluoride atmosphere in the presence of a particulate metal capable of defluorinating dinitrogen difluoride, but inert to nitrogen trifluoride, preferably the metal being selected from the group consisting of iron, cobalt, and nickel, to a temperature of from about 300.degree.-1000.degree. F. for a time sufficient to effect defluorination of the dinitrogen difluoride.
    Type: Grant
    Filed: April 6, 1978
    Date of Patent: March 18, 1980
    Assignee: Air Products & Chemicals, Inc.
    Inventors: John T. Lileck, John Papinsick, Edward J. Steigerwalt
  • Purification of nitrogen trifluoride atmospheres
    Patent number: 4156598
    Abstract: This invention relates to an improvement in a process for purifying nitrogen trifluoride atmospheres generally contaminated with nitrous oxide, water, and dinitrogen difluoride. The improvement for extending adsorber life resides in reducing the dinitrogen difluoride content in the atmosphere to less than 0.03% by volume prior to passing the atmosphere through the adsorber.
    Type: Grant
    Filed: June 8, 1978
    Date of Patent: May 29, 1979
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Andrew J. Woytek, John T. Lileck