Patents Represented by Attorney Howard K. Kothe

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  • Dicalcium phosphate dihydrate having improved monofluorophosphate compatibility and process for the preparation thereof
    Patent number: 4472365
    Abstract: Dicalcium phosphate dihydrate composition having improved monofluorophosphate compatibility are prepared by the addition of magnesium oxide and pyrophosphoric acid to the reaction mixture, and terminating the reaction by which the dicalcium phosphate dihydrate is formed at a low pH.
    Type: Grant
    Filed: June 15, 1981
    Date of Patent: September 18, 1984
    Assignee: Stauffer Chemical Company
    Inventor: Christian G. Michel
  • Continuous high pressure process for preparing phenylphosphonous dichloride
    Patent number: 4409152
    Abstract: Phenylphosphonous dichloride is prepared by the continuous reaction of monochlorobenzene, phosphorus trichloride, and elemental phosphorus at elevated pressures and temperatures.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: October 11, 1983
    Assignee: Stauffer Chemical Company
    Inventor: Lawrence F. Humphrey
  • Dialkylzinc compositions having improved thermal stability
    Patent number: 4407758
    Abstract: Acenaphthylene compounds are added to dialkylzinc compositions to improve the thermal stability of the compositions.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: October 4, 1983
    Assignee: Stauffer Chemical Company
    Inventor: Alfred K. Jung
  • Dialkylzinc compositions having improved thermal stability
    Patent number: 4402880
    Abstract: Acenaphthene compounds are added to dialkyl-zinc compositions to improve the thermal stability of the compositions.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: September 6, 1983
    Assignee: Stauffer Chemical Company
    Inventor: Alfred K. Jung
  • Dialkylzinc composition having improved thermal stability
    Patent number: 4385003
    Abstract: Anthracene compounds are added to dialkylzinc compositions to improve the thermal stability of the compositions.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: May 24, 1983
    Assignee: Stauffer Chemical Company
    Inventor: Alfred K. Jung
  • Meta-tertiary-butylphenyl diphenyl phosphate
    Patent number: 4378320
    Abstract: Tertiary-butylphenyl diphenyl phosphate esters in which the nominal molar ratio of tertiary-butyl radicals to phenyl radicals ranges from about 1:5 to about 1:2, the meta-tertiary-butylphenyl content ranges from about 25% to about 100 % and the ortho-tertiary-butylphenyl content is less than about 50% are highly effective plasticizers for vinyl chloride polymer compositions.
    Type: Grant
    Filed: November 7, 1980
    Date of Patent: March 29, 1983
    Assignee: Stauffer Chemical Company
    Inventors: Stanley B. Mirviss, Silvio L. Giolito
  • Lubricating sealants
    Patent number: 4378297
    Abstract: Lubricating sealants which are resistant to aprotic solvents such as chloroform and carbon disulfide are prepared by forming a grease comprising glycerine, fumed silica, polyethylene glycol and a minor amount of water.
    Type: Grant
    Filed: September 10, 1981
    Date of Patent: March 29, 1983
    Assignee: Stauffer Chemical Company
    Inventor: Kyung S. Shim