Patents by Inventor Saburo Ishiyama

Saburo Ishiyama 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 the production of novel polysaccharide
    Patent number: 4153508
    Abstract: Polysaccharides forming gels are produced by cultivating a microorganism such as Arthrobacter carbazolum FERM 2574 in a suitable medium.
    Type: Grant
    Filed: October 6, 1977
    Date of Patent: May 8, 1979
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Kenichi Hisatsuka, Saburo Ishiyama, Akira Inoue, Osamu Tsumura, Mikio Sato
  • Polysaccharide and process for the production thereof
    Patent number: 4146706
    Abstract: Polysaccharides forming gels are produced by cultivating a microorganism such as Arthrobacter carbazolum FERM 2574 in a suitable medium.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: March 27, 1979
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Kenichi Hisatsuka, Saburo Ishiyama, Akira Inoue, Osamu Tsumura, Mikio Sato
  • Process for the production of novel polysaccharide
    Patent number: RE31030
    Abstract: Polysaccharides forming gels are produced by cultivating .[.a.]. microorganism .[.such as Arthrobacter carbazolum.]. .Iadd.strain .Iaddend.FERM 2574 .Iadd.(ATCC-31258) .Iaddend.in a suitable medium.
    Type: Grant
    Filed: September 4, 1980
    Date of Patent: September 14, 1982
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Kenichi Hisatsuka, Saburo Ishiyama, Akira Inoue, Osamu Tsumura, Mikio Sato
  • Polysaccharide obtained from Pseudomonas stutzeri
    Patent number: RE31664
    Abstract: Polysaccharides forming gels are produced by cultivating .[.a.]. microorganism .[.such as Arthrobachter carbazolum.]. .Iadd.strain .Iaddend.FERM 2574 .Iadd.(ATCC-31258) .Iaddend.in a suitable medium.
    Type: Grant
    Filed: September 4, 1980
    Date of Patent: September 4, 1984
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Kenichi Hisatsuka, Saburo Ishiyama, Akira Inoue, Osamu Tsumura, Mikio Sato