Patents by Inventor Tadaaki Kato

Tadaaki Kato 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).

  • Patent number: 5001118
    Abstract: Disclosed herein is a method for preventing senescence and increasing bone mass namely, bone volume and bone strength which method comprises administering 24,25-dihydroxy cholecalciferol in a pharmaceutically effective amount, and also use of 24,25-dihydroxy cholecalciferol for preparing anti-senescent compositions and compositions for increasing bone mass.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: March 19, 1991
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yuji Maeda, Hideyuki Yamato, Toru Hirai, Masanori Ikuzawa, Mikio Matsuki, Masanori Togawa, Eiji Inoguchi, Sinji Nakajima, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4866047
    Abstract: Disclosed herein is a method for inhibiting the formation of urinary calculus by the administration of 24,25-dihydroxycholecarciferol.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: September 12, 1989
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideyuki Yamato, Yuji Maeda, Takayoshi Fujii, Yasuhiko Kobayashi, Kenichi Saito, Fumio Hirose, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4628050
    Abstract: Disclosed herein is a pharmaceutical composition in dosage unit form, which comprises a dosage effective for treating nephritic disease of a compound of 24,25-dihydroxycholecalciferol as an active ingredient and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: November 20, 1985
    Date of Patent: December 9, 1986
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yuji Maeda, Hideyuki Yamato, Takayoshi Fujii, Yasuhiko Kobayashi, Kenichi Saito, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4590184
    Abstract: Disclosed herein is a pharmaceutical composition in dosage unit form, which comprises a dosage effective for treating osteoporosis of a compound of 24,25-dihydroxycholecalciferol and a pharmaceutically acceptable carrier.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: May 20, 1986
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yuji Maeda, Hideyuki Yamato, Takayoshi Fujii, Yasuhiko Kobayashi, Kenichi Saito, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4534975
    Abstract: Disclosed is a pharmaceutical composition in dosage unit form which comprises a dosage effective for the treatment of pains and pyrexia, hypertension, hypotension, hyperlipemia, inflammatory diseases or diseases due to the functional accentuation of thrombocytes of a compound of 24,25-dihydroxycholecalciferol and a pharmaceutical acceptable carrier or diluent therefor.
    Type: Grant
    Filed: October 1, 1984
    Date of Patent: August 13, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideyuki Yamato, Yuji Maeda, Fumisato Yoshino, Kyoya Takahata, Masanori Ikuzawa, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4501737
    Abstract: Disclosed is a pharmaceutical composition in dosage unit form which comprises a dosage effective for the treatment of myodystrophia of a compound of 24,25-dihydroxycholecalciferol and a pharmaceutical acceptable carrier or diluent therefor.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: February 26, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideyuki Yamato, Noriyuki Toyoda, Takayoshi Fujii, Yuji Maeda, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4501738
    Abstract: Disclosed is a pharmaceutical composition in dosage unit form which comprises a dosage effective for the treatment of pains and pyrexia, hypertension, hypotension, hyperlipemia, inflammatory diseases or diseases due to the functional accentuation of thrombocytes of a compound of 24,25-dihydroxycholecalciferol and a pharmaceutical acceptable carrier or diluent therefor.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: February 26, 1985
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hideyuki Yamato, Yuji Maeda, Fumisato Yoshino, Kyoya Takahata, Masanori Ikuzawa, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4442093
    Abstract: Pharmaceutical composition in dosage unit form, comprising a therapeutically effective amount of 24,25-dihydroxycholecalciferol and a pharmaceutically acceptable carrier. The compound of 24,25-dihydroxycholecalciferol has anti-hypercalcemic activity, anti-ulcer activity, activity of preventing reduction of immunity, activity of controlling magnesium-metabolism, anti-hyperphosphatemic activity, activity of controlling blood sugar level and anti-tumor activity.
    Type: Grant
    Filed: May 4, 1982
    Date of Patent: April 10, 1984
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yuji Maeda, Takayoshi Fujii, Yasuhiko Kobayashi, Kenichi Saito, Tadaaki Kato, Chikao Yoshikumi
  • Patent number: 4420339
    Abstract: Disclosed herein are collagen fibers for use in medical treatments, having amino acid residues of 312 to 340 glycine residues, 119 to 138 proline residues, 94 to 100 hydroxyproline residues and 2.6 to 5.5 tyrosin residues per 1000 total amino acid residues thereof, a denaturation temperature in a range of 31.degree. to 40.degree. C., and S-constant of 1.12 to 1.62.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: December 13, 1983
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventor: Tadaaki Kato
  • Patent number: 4378017
    Abstract: A composite material of de-N-acetylated chitin and fibrous collagen, which may be prepared by bringing the de-N-acetylated chitin and the fibrous collagen into mutual contact in an aqueous acidic medium followed by deacidifying the obtained product, the fibrous collagen being able to be partially replaced by gelatin and/or soluble collagen, and a shaped material derived from the composite material is excellent in mechanical strength, heat-resistance and biostability and advantageously employed in the field of medical materials, edibles such as edible casing and base materials for inmobilizing enzyme.
    Type: Grant
    Filed: March 11, 1981
    Date of Patent: March 29, 1983
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Junichi Kosugi, Tadaaki Kato, Masayuki Funabashi
  • Patent number: 4309843
    Abstract: A plant cultivation device comprised of a plurality of walls positioned parallel to each other and vertically inserted into the soil. Adjacent parallel walls are connected by a corrugated plate which has drainage holes positioned within parallel grooves on the plate. Hot water pipes are positioned within these grooves for supplying heat to the surrounding area. A layer of wood chips covers the hot water pipes and corrugated plate. The wood chip layer is in turn covered by a layer of cultivation soil. Steam discharge pipes are positioned adjacent to the partition walls at a point above the cultivation soil and are covered by a shield which interconnects to adjacent walls. High pressure steam sterilizes the air and soil and thus promotes the healthy growth of plant life.
    Type: Grant
    Filed: September 11, 1980
    Date of Patent: January 12, 1982
    Inventor: Tadaaki Kato
  • Patent number: 4294677
    Abstract: A method for electrodepositing a protein by electrophoresis onto an ion-exchange membrane from a liquid in which the protein is dissolved or is dispersed in suspension, and an apparatus for the electrodepositing are disclosed.
    Type: Grant
    Filed: September 12, 1979
    Date of Patent: October 13, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Teruo Sakagami, Tadaaki Kato, Toru Hirai, Naohiro Murayama
  • Patent number: 4273705
    Abstract: A method for preparation of collagen filaments for use in medical treatments comprising the steps of dispersing a finely shredded insoluble collagen material from which impurities have already been removed in an aqueous acidic solution and of subjecting the thus dispersed collagen material to irradiation of ultrasonic waves.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: June 16, 1981
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventor: Tadaaki Kato
  • Patent number: 3984305
    Abstract: A process for producing a low sulfur content fuel oil in a high yield from a starting oil having a high sulfur content, which comprises (1) treating a residual petroleum oil with hydrogen at a temperature of about 350.degree. to 450.degree. C and a pressure of about 50 to 200 Kg/cm.sup.2 at a liquid hourly space velocity of about 0.2 to 4 l/H.l in the presence of a catalyst, (2) introducing an inert gas or steam at a temperature of about 400.degree. to 900.degree.C and pyrolyzing the treated oil at a temperature of about 350.degree. to 500.degree.C and at a pressure of about atmospheric pressure to 100 Kg/cm.sup.2 with a residence time of about 0.5 to 10 hours, and (3) hydrodesulfurizing the pyrolyzed oil at a temperature of about 300.degree. to 400.degree.C and a pressure of about 30 to 100 Kg/cm.sup.2 at a liquid hourly space velocity of about 0.5 to 4 l/H.l in the presence of a desulfurizing catalyst.
    Type: Grant
    Filed: April 12, 1974
    Date of Patent: October 5, 1976
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Takuji Hosoi, Tadaaki Kato, Yukuo Katayama, Kazuaki Matsui, Tsutomu Konno