Patents by Inventor Clarence J. Maring

Clarence J. Maring 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).

  • 9-R-azacyclic erythromycin antibiotics
    Patent number: 5075289
    Abstract: Semisynthetic antibiotics with improved therapeutic properties are disclosed. In particular, 9-R-azacyclic derivatives of erythromycin, its derivatives, and their salts and esters show superior antimicrobial activity compared to other macrolide compounds.
    Type: Grant
    Filed: June 7, 1988
    Date of Patent: December 24, 1991
    Assignee: Abbott Laboratories
    Inventors: Richard J. Pariza, Paul A. Lartey, Clarence J. Maring, Larry L. Klein
  • Processes for the preparation of spectinomycin analogs, novel products and intermediates therein
    Patent number: 4698436
    Abstract: The present invention relates to novel methods of preparing a wide variety of spectinomycin analogs and biologically acceptable salts thereof. Further, the invention relates both to novel intermediates and novel products therein. The novel products are spectinomycin analogs which can be used for the same biological purposes as spectinomycin. The processes of the invention provide for novel intermediates that are versatile and highly reactive exocyclic enones.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: October 6, 1987
    Assignee: The Upjohn Company
    Inventors: David R. White, Clarence J. Maring
  • Processes for the preparation of spectinomycin analogs, novel products and intermediates therein
    Patent number: 4542227
    Abstract: The present invention relates to novel methods of preparing a wide variety of spectinomycin analogs and biologically acceptable salts thereof. Further, the invention relates both to novel intermediates and novel products therein. The novel products are spectinomycin analogs which can be used for the same biological purposes as spectinomycin. The processes of the invention provide for novel intermediates that are versatile and highly reactive exocyclic enones.
    Type: Grant
    Filed: March 12, 1984
    Date of Patent: September 17, 1985
    Assignee: The Upjohn Company
    Inventors: David R. White, Clarence J. Maring
  • Processes for the preparation of spectinomycin analogs, products and intermediates therein
    Patent number: 4467103
    Abstract: The present invention relates to novel methods of preparing a wide variety of spectinomycin analogs and biologically acceptable salts thereof. Further, the invention relates both to novel intermediates and novel products therein. The novel products are spectinomycin analogs which can be used for the same biological purposes as spectinomycin. The processes of the invention provide for novel intermediates that are versatile and highly reactive exocyclic enones.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: August 21, 1984
    Assignee: The Upjohn Company
    Inventors: David R. White, Clarence J. Maring