Patents by Inventor Masahira Nakagawa

Masahira Nakagawa 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).

  • Polysaccharide, process for production thereof, use thereof, and agrobacterium radiobacter TNM2 strain
    Patent number: 5739014
    Abstract: A polysaccharide having a molecular weight of about 5.times.10.sup.3 to 10.times.10.sup.6 as measured by gel permeation chromatography and composed of 5 saccharides, viz. D-glucose, D-galactose, D-glucuronic acid, D-ribose and D-riburonic acid, in a molar ratio of D-glucose:D-galactose:D-glucuronic acid:D-ribose:D-riburonic acid=10:1.8-2.9:1.8-2.6:0.5-1.7:0.5-1.7, with the content of o-acetyl groups in the polysaccharide being 0-10% by weight.
    Type: Grant
    Filed: March 12, 1996
    Date of Patent: April 14, 1998
    Assignee: Tayca Corporation
    Inventors: Osamu Nakanishi, Yoichi Ooiso, Takeshi Okumiya, Ryosuke Sugihara, Kaoru Kawashima, Akira Misaki, Masahira Nakagawa
  • Polysaccharides, process for producing polysaccharides, uses of polysaccharides and Azotobacter beijerinckii TNM1
    Patent number: 5527904
    Abstract: Disclosed are novel polysaccharides having the following physicochemical properties: (1) a molecular weight determined by gel filtration chromatography is about 5.times.10.sup.3 to 10.times.10.sup.6, (2) the constituent glycoses are D-galacturonic acid, L-rhamnose and D-glucose, (3) the constituent glycoses are joined substantially by 1,3-linkages, and (4) a configuration of D-galacturonic acid is .alpha., that of L-rhamnose is .beta. and that of D-glucose is .alpha.. A process for producing polysaccharides composed of D-galacturonic acid, L-rhamnose and D-glucose, use of the polysaccharides and a strain for producing the polysaccharides are also disclosed.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: June 18, 1996
    Assignee: Tayca Corporation
    Inventors: Osamu Nakanishi, Yoichi Ooiso, Takeshi Okumiya, Ryosuke Sugihara, Akira Misaki, Masahira Nakagawa
  • Azotobacter beijerinckii TNM1
    Patent number: 5508190
    Abstract: Disclosed are novel polysaccharides having the following physicochemical properties: (1) a molecular weight determined by gel filtration chromatography is about 5.times.10.sup.3 to 10.times.10.sup.6 (2) the constituent glycoses are D-galacturonic acid, L-rhamnose and D-glucose, (3) the constituent glycoses are joined substantially by 1,3-linkages, and (4) a configuration of D-galacturonic acid is .alpha., that of L-rhamnose is .beta. and that of D-glucose is .alpha.. A process for producing polysaccharides composed of D-galacturonic acid, L-rhamnose and D-glucose, use of the polysaccharides and a strain for producing the polysaccharides are also disclosed.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: April 16, 1996
    Assignee: Tayca Corporation
    Inventors: Osamu Nakanishi, Yoichi Ooiso, Takeshi Okumiya, Ryosuke Sugihara, Akira Misaki, Masahira Nakagawa