Patents by Inventor John R. Oscarson

John R. Oscarson 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).

  • Streptomyces sp. N664-30 which produces an ionophore antibacterial agent
    Patent number: 4908316
    Abstract: An antibiotic has been isolated from fermentation of a new Streptomyces culture. The new ionophore is active as an antibacterial and anticoccidial agent.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: March 13, 1990
    Assignee: Pfizer Inc.
    Inventors: Walter P. Cullen, John R. Oscarson, Junsuke Tone, Hiroshi Maeda
  • Inophore antibacterial agent from streptomyces
    Patent number: 4751317
    Abstract: An antibiotic has been isolated from fermentation of a new Streptomyces culture. The new ionophore is active as an antibacterial and anticoccidial agent.
    Type: Grant
    Filed: August 29, 1986
    Date of Patent: June 14, 1988
    Assignee: Pfizer Inc.
    Inventors: Walter P. Cullen, John R. Oscarson, Junsuke Tone, Hiroshi Maeda
  • Antibiotics produced by a new microbe, Catenuloplanes japonicus
    Patent number: 4287182
    Abstract: Antibiotics CP-54,715 and CP-54,716, identified by their analytical characteristics, are produced by fermentation of a new microbial species Catenuloplanes jaonicus in a new genus Catenuloplanes and are active against gram-positive and anaerobic infections.
    Type: Grant
    Filed: July 2, 1980
    Date of Patent: September 1, 1981
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Liang H. Huang, John R. Oscarson, Riichiro Shibakawa, Junsuke Tone
  • Ansamycin antibiotic
    Patent number: 4247462
    Abstract: A new subspecies of Streptomyces nigellus Prokop, designated Streptomyces nigellus Prokop subsp. africanus Huang subsp. nov. ATCC 31496, when propagated under aerobic conditions in aqueous nutrient media, produces a mixture of antibiotics. One of these antibiotics is the known macrolide antibiotic cirramycin A; the ansamycin antibiotic is an analogue of protostreptovaricin and the structure has been established as 21-hydroxy, 25-demethyl, 25-methylthioprotostreptovaricin I.
    Type: Grant
    Filed: January 3, 1980
    Date of Patent: January 27, 1981
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
  • Process for producing new ansamycin antibiotic
    Patent number: 4225674
    Abstract: A new subspecies of Streptomyces nigellus Prokop, designated Streptomyces nigellus Prokop subsp. africanus Huang subsp. nov. ATCC 31496, when propagated under aerobic conditions in aqueous nutrient media, produces a mixture of antibiotics. One of these antibiotics is the known macrolide antibiotic cirramycin A; the ansamycin antibiotic is an analogue of protostreptovaricin and the structure has been established as 21-hydroxy, 25-demethyl, 25-methylthioprotostreptovaricin I.
    Type: Grant
    Filed: April 30, 1979
    Date of Patent: September 30, 1980
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
  • New polycyclic ether antibiotic
    Patent number: 4195079
    Abstract: A new polycyclic ether antibiotic produced by a strain of Actinomadura verrucosospora under submerged fermentation conditions is useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.
    Type: Grant
    Filed: January 31, 1979
    Date of Patent: March 25, 1980
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
  • Polycyclic ether antibiotic produced by a strain of streptomyces hygroscopicus
    Patent number: 4150152
    Abstract: A new polycyclic ether antibiotic produced by a strain of Streptomyces hygroscopicus under submerged fermentation conditions is useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: April 17, 1979
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
  • Polycyclic ether antibiotics produced by new species of actinomycete
    Patent number: 4148882
    Abstract: New polycyclic ether antibiotics produced by a species of actinomycete under submerged fermentation conditions are useful in controlling coccidiosis in poultry and in improving feed utilization efficiency in ruminants.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: April 10, 1979
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, Liang H. Huang, Riichiro Shibakawa, Junsuke Tone
  • Polycyclic ether antibiotic
    Patent number: 4062945
    Abstract: A new polycyclic ether antibiotic with anticoccidial, insecticidal and antimicrobial activity, its production by fermentation and methods for its recovery and purification are described.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: December 13, 1977
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, John R. Routien
  • Polycyclic ether antibiotic for combating insects
    Patent number: 4048304
    Abstract: A new polycyclic ether antibiotic with anticoccidial, insecticidal and antimicrobial activity, its production by fermentation and methods for its recovery and purification are described.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: September 13, 1977
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, John B. Routien
  • Mixture of antibiotics produced by new species of micromonospora
    Patent number: 4032631
    Abstract: A new species of Micromonospora, designated Micromonospora saitamica sp. nov. Routien, when subjected to submerged aerobic fermentation, produces at least four antibiotics. One of these is previously reported rubradirin produced by Streptomyces achromogenes var. rubradiris NRRL 3061.
    Type: Grant
    Filed: December 19, 1975
    Date of Patent: June 28, 1977
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, John B. Routien, Riichiro Shibakawa, Junsuke Tone
  • Polycyclic ether antibiotic
    Patent number: 4022885
    Abstract: A new polycyclic ether antibiotic with anticoccidial, insecticidal and antimicrobial activity, its production by fermentation and methods for its recovery and purification are described.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: May 10, 1977
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, John B. Routien
  • Antibiotic produced by a species of micromonospora
    Patent number: 3991183
    Abstract: Antibiotic Compound 37,504 is produced by the submerged aerobic fermentation under controlled conditions of a new species of Micromonospora designated Micromonospora viridifaciens sp. nov. Routien, ATCC 31146.
    Type: Grant
    Filed: May 1, 1975
    Date of Patent: November 9, 1976
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Charles E. Moppett, John R. Oscarson, John B. Routien, Riichiro Shibakawa, Junsuke Tone