Patents by Inventor Mark T. Jefferson

Mark T. Jefferson 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 producing nocardicin A
    Patent number: 4212944
    Abstract: A new species of Nocardiopsis, designated Nocardiopsis atra Huang sp. nov. ATCC 31511, when aerobically propagated in an aqueous nutrient medium, produces nocardicin A in good yield.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: July 15, 1980
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Liang H. Huang, Mark T. Jefferson, Hiroshi Maeda, Kozo Inoue, Riichiro Shibakawa
  • Antibiotics produced by species of actinoplanes
    Patent number: 4169887
    Abstract: A species of Actinoplanes, designated Actinoplanes deccanensis Parenti, Pagani and Beretta subsp. salmoneus Huang subsp. nov., ATCC 31355, when subjected to submerged aerobic fermentation, produces a new antibiotic complex. Methods for the recovery and purification of the antibiotic complex and some of the individual antibiotic components are described.
    Type: Grant
    Filed: August 2, 1978
    Date of Patent: October 2, 1979
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, Mark T. Jefferson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
  • Antibiotics produced by new species of nocardia
    Patent number: 4148883
    Abstract: A new species of Nocardia, designated Nocardia argentinensis Huang sp. nov., when subjected to aerobic submerged fermentation, produces a mixture of new antibiotics. Methods for the recovery and purification of these antibiotics are described and some of their antimicrobial properties are outlined.
    Type: Grant
    Filed: August 18, 1977
    Date of Patent: April 10, 1979
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, Mark T. Jefferson, Liang H. Huang, Riichiro Shibakawa, Junsuki Tone
  • Polycyclic ether antibiotic
    Patent number: 4129578
    Abstract: A new polycyclic ether antibiotic with anticoccidial, antimicrobial and growth promotant properties, its production by fermentation and methods for its recovery and purification are described.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: December 12, 1978
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Mark T. Jefferson, Charles E. Moppett, John B. Routien, Frank C. Sciavolino
  • Polycyclic ether antibiotic produced by new species of dactylosporangium
    Patent number: 4081532
    Abstract: A new polycyclic ether antibiotic produced by three strains of a new species of Dactylosporangium under submerged fermentation conditions is useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: March 28, 1978
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John B. Routien, Mark T. Jefferson, Riichiro Shibakawa, Junsuke Tone
  • Mixture of antibiotics produced by new species of streptosporangium
    Patent number: 4032632
    Abstract: Two new species of Streptosporangium, designated Streptosporangium koreanum Routien sp. nov. and Streptosporangium cinnabarinum Routien sp. nov., when subjected to submerged aerobic fermentation, produce the same two new antibiotics. Methods for the recovery and purification of these antibiotics, co-produced with minor antibiotics, are described and some of their antimicrobial properties are outlined.
    Type: Grant
    Filed: July 23, 1976
    Date of Patent: June 28, 1977
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John B. Routien, Mark T. Jefferson, Riichiro Shibakawa, Junsuke Tone
  • Antibiotic Compound 41,012
    Patent number: 4001397
    Abstract: Disclosed is a new antibiotic, Compound 41,012, which is produced by the submerged aerobic fermentation of a new species of Actinoplanes designated Actinoplanes nipponensis sp. nov. Routien, ATCC 31145. Methods for the recovery and purification of Compound 41,012 are also described as are some of its antimicrobial properties.
    Type: Grant
    Filed: August 11, 1975
    Date of Patent: January 4, 1977
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Charles E. Moppett, Walter P. Cullen, John B. Routien, Mark T. Jefferson, Riichiro Shibakawa, Junsuke Tone