Patents by Inventor Johann G. Schulz

Johann G. Schulz 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 preparing novel isomeric dicarboxy, di (hydroxymethyl) diphenylmethane dilactones
    Patent number: 4104281
    Abstract: A process for preparing novel isomeric dicarboxy, di (hydroxymethyl), diphenylmethane dilactones wherein benzophenone-3, 4,3',4'-tetracarboxylic dianhydride is subjected to hydrogenation in an ether or ester carrier in the presence of a hydrogenation catalyst pretreated in an ether carrier.
    Type: Grant
    Filed: December 8, 1976
    Date of Patent: August 1, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Anatoli Onopchenko, Johann G. Schulz, Edward T. Sabourin
  • Isomeric dicarboxy, di (hydroxymethyl), diphenylmethanes as new compounds
    Patent number: 4102919
    Abstract: Isomeric dicarboxy, di(hydroxymethyl), diphenylmethanes as new compounds.
    Type: Grant
    Filed: December 8, 1976
    Date of Patent: July 25, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Anatoli Onopchenko, Johann G. Schulz, Edward T. Sabourin
  • Beta, beta-dialkylethylmercaptoethoxylates as new compounds
    Patent number: 4102932
    Abstract: Beta,beta-dialkylethylmercaptoethoxylates as new compounds.
    Type: Grant
    Filed: January 14, 1977
    Date of Patent: July 25, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Anatoli Onopchenko, Johann G. Schulz
  • Process for preparing diarylketones
    Patent number: 4086277
    Abstract: A process for converting a 1,1-diarylalkane, such as a 1,1-bis(alkylphenyl)alkane, to the corresponding diarylketone which involves oxidizing the 1,1-diarylalkane using critical amounts of 1,1-diarylalkane, nitric acid and water. The reaction product obtained as a result of such oxidation of a 1,1-bis(alkylphenyl)alkane can be further subjected to reaction with additional nitric acid at elevated temperatures in a second stage to convert each of the nuclear alkyl groups on the alkyl-aromatic charge to carboxyl groups and the dilute nitric acid remaining can be employed in the first stage as oxidant.
    Type: Grant
    Filed: February 16, 1977
    Date of Patent: April 25, 1978
    Assignee: Gulf Research & Development Company
    Inventors: Anatoli Onopchenko, Johann G. Schulz