Patents by Inventor Michael John Pearson

Michael John Pearson 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 analogues and compositions
    Patent number: 4108992
    Abstract: Novel cephalosporin analogues, salts and esters thereof, their preparation, intermediates and antibacterial compositions containing them. The compositions are formulated for human use into unit dosage form containing 100-4,000 mg of antibacterial compound. The cephem analogues are characterized by having a ring O-heteroatom instead of a ring N-heteroatom and are designated as oxacephems.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: August 22, 1978
    Assignee: Beecham Group Limited
    Inventors: Michael John Pearson, Clive Leslie Branch
  • 3-Benzyl-7-triphenylmethylamino-3-cephem-4-carboxylic acid and salts and esters thereof
    Patent number: 3975383
    Abstract: Substituted ceph-3-ems having a substituted amino side chain in the 7-position, carboxylic acid or a salt or ester thereof in the 4-position and a benzyl or monohalobenzyl group in the 3-position.
    Type: Grant
    Filed: August 29, 1974
    Date of Patent: August 17, 1976
    Assignee: Beecham Group Limited
    Inventors: John Herbert Charles Nayler, Michael John Pearson, Robert Southgate
  • 3-Benzyl-7-amino-3-cephem-4-carboxylic acid, the tertiary butyl ester, or the pharmaceutically acceptable salts thereof
    Patent number: 3974154
    Abstract: 3-BENZYL-7-AMINO-3-CEPHEM-4-CARBOXYLIC ACID AND ESTERS AND PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: August 10, 1976
    Assignee: Beecham Group Limited
    Inventors: John Herbert Charles Nayler, Michael John Pearson, Robert Southgate
  • 3-(2'-Tetrahydropyr anylmethyl)-7-(2-thienylacetamido)-3-cephem-4-carboxylic acid and non-toxic salts thereof
    Patent number: 3959267
    Abstract: This invention relates to novel substituted ceph-3-ems some of which are of value as intermediates in the synthesis of antimicrobially active cephalosporin analogues whilst others are useful as antimicrobial agents in their own right. The invention is described in Part D of this specification. Parts A, B, C and E relate to starting materials and processes necessary for the preparation of the novel cephems.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: May 25, 1976
    Assignee: Beecham Group Limited
    Inventors: John Herbert Charles Nayler, Michael John Pearson, Robert Southgate
  • 3-Benzyl-7-substituted acetamido-3-cephem-4-carboxylic acids and halogenated benzyl derivatives
    Patent number: 3939157
    Abstract: Antimicrobially active ceph-3-ems having in the 3-position a benzyl or mono-halobenzyl group, preferably with the mono-halo group in the para-position of the phenyl part of the benzyl group.
    Type: Grant
    Filed: July 31, 1974
    Date of Patent: February 17, 1976
    Assignee: Beecham Group Limited
    Inventors: John Herbert Charles Nayler, Michael John Pearson, Robert Southgate