Patents by Inventor Justo M. Mata

Justo M. Mata 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).

  • Cephalosporin antibiotics
    Patent number: 4302578
    Abstract: Disclosed are 7.beta.-(D-5-amino-5-carboxyvaleramido)-7-methoxy-3-cephem-4-carboxylic acids which are substituted in the three position of the "cephem" nucleus by a variety of alkyl, haloalkyl or oxygen, sulfur and nitrogen containing substituents; and the salts, esters and amide derivatives thereof. Certain of the products are obtained by fermentation and others are obtained by synthetic means. The products exhibit activity against gram-negative and gram-positive bacteria.
    Type: Grant
    Filed: February 16, 1971
    Date of Patent: November 24, 1981
    Assignee: Merck & Co., Inc.
    Inventors: Edward O. Stapley, Justo M. Mata
  • Preparation of antibiotics by fermentation
    Patent number: 4036696
    Abstract: A fermentation process for preparing 7-methoxy substituted cephalosporins. The products are useful as antibiotics and exhibit activity against gram-negative and gram-positive bacteria.
    Type: Grant
    Filed: June 14, 1976
    Date of Patent: July 19, 1977
    Assignee: Merck & Co., Inc.
    Inventors: Edward O. Stapley, Justo M. Mata
  • 7.beta.-(D-5-amino-5-carboxyvaleramido )-7-methoxy-3-substituted-3-cephem-4-carboxylic acid antibiotics
    Patent number: 4017487
    Abstract: Disclosed are 7.beta.-(D-5-amino-5-carboxyvaleramido)-7-methoxy-3-cephem-4-carboxylic acids which are substituted in the three position of the "cephem" nucleus by a variety of alkyl, haloalkyl or oxygen, sulfur and nitrogen containing substitutents; and the salts, esters and amide derivatives thereof. Certain of the products are obtained by fermentation and others are obtained by synthetic means. The products exhibit activity against gram-negative and gram-positive bacteria.
    Type: Grant
    Filed: October 4, 1974
    Date of Patent: April 12, 1977
    Assignee: Merck & Co., Inc.
    Inventors: Edward O. Stapley, Justo M. Mata
  • Process for preparing 3-hydroxymethyl cephalosporins
    Patent number: 3985742
    Abstract: Disclosed are 7.beta.-(D-5-amino-5-carboxyvaleramido)-7-methoxy-3-cephem-4-carboxylic acids which are substituted in the three position of the "cephem" nucleus by a variety of alkyl, haloalkyl or oxygen, sulfur and nitrogen containing substituents; and the salts, esters and amide derivatives thereof. Certain of the products are obtained by fermentation and others are obtained by synthetic means. The products exhibit activity against gram-negative and gram-positive bacteria.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: October 12, 1976
    Assignee: Merck & Co., Inc.
    Inventors: Edward O. Stapley, Justo M. Mata