Patents by Inventor Katsushige Ikai

Katsushige Ikai 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).

  • Publication number: 20030186389
    Abstract: Three enzymes degrading sulfated glucuronofucan; processes for producing these enzymes; activators for these enzymes; glucuronofucan sulfate and degradation products thereof; and a novel microorganism.
    Type: Application
    Filed: October 21, 2002
    Publication date: October 2, 2003
    Inventors: Takeshiara Sakai, Kumiko Ishizuka, Kaoru Kojima, Kazuo Shimanaka, Katsushige Ikai, Ikunoshin Kato
  • Publication number: 20030176393
    Abstract: A product obtained by heating at least one substance selected from the following (a), (b) and (c).
    Type: Application
    Filed: September 30, 2002
    Publication date: September 18, 2003
    Inventors: Nobuto Koyama, Hiroaki Sagawa, Eiji Kobayashi, Tatsuji Enoki, Hua-Kang Wu, Eiji Nishiyama, Suzu Deguchi, Katsushige Ikai, Hiromu Ohnogi, Motoko Ueda, Akihiro Kondo, Ikunoshin Kato
  • Publication number: 20030176395
    Abstract: A sulfated saccharide represented by the following formula [I] or a sulfated polysaccharide where the said sulfated saccharide is an essential component of the constituting sugar as well as a salt thereof.
    Type: Application
    Filed: February 18, 2003
    Publication date: September 18, 2003
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Katayama, Kazuo Shimanaka, Katsushige Ikai, Ikunoshin Kato
  • Publication number: 20030171571
    Abstract: A smaller molecule obtainable by allowing a sulfated fucan-digesting enzyme which digests a novel sulfated polysaccharide derived from an alga belonging to Laminariales to act on a sulfated fucan, and a method for producing the same.
    Type: Application
    Filed: October 24, 2002
    Publication date: September 11, 2003
    Applicant: TAKARA BIO INC.
    Inventors: Takeshi Sakai, Hitomi Amarume, Takashi Kawai, Kaoru Kojima, Kazuo Shimanaka, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6593311
    Abstract: Apoptosis inducers, anticancer drugs and carcinostatic drugs containing sulfated-fucose-containing polysaccharide(s) and/or degradation product(s) thereof, and a method for inducing apoptosis by using sulfated-fucose-containing polysaccharide(s) and/or degradation product(s) thereof as the active ingredient. A degrading enzyme which is useful in the production of the degradation products of sulfated-fucose-containing polysaccharides.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: July 15, 2003
    Assignees: Takara Shuzo Co., Ltd., Research Institute for Glycotechnology
    Inventors: Takeshi Sakai, Hideo Kitano, Fu-Gong Yu, Shinji Nakayama, Kaoru Kojima, Hitomi Kimura, Yoshikuni Nakanishi, Kaoru Katayama, Takanari Tominaga, Kazuo Shimanaka, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6590097
    Abstract: Sulfated fucogalactan or its salt useful as a reagent for sugar chain engineering or an HGF-production inducer; a degraded product or its salt obtained by treating the sulfated fucogalactan with a sulfated fucogalactan digesting enzyme; the sulfated fucogalactan digesting enzyme useful in sugar chain engineering; a process for producing the degraded product by treating sulfated fucogalactan or its salt with the above enzyme; and a process for producing the sulfated fucogalactan digesting enzyme.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: July 8, 2003
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Kaoru Katayama, Kazuo Shimanaka, Katsushige Ikai, Ikunoshin Kato
  • Publication number: 20030105029
    Abstract: Medicinal compositions for treating, ameliorating or preventing diseases with sensitivity to 3,6-anhydrogalactopyranose are represented by formula (I): 1
    Type: Application
    Filed: August 27, 2002
    Publication date: June 5, 2003
    Applicant: TAKARA SHUZO CO., LTD.
    Inventors: Tatsuji Enoki, Hiroaki Sagawa, Takanari Tominaga, Eiji Nishiyama, Nobuto Koyama, Takeshi Sakai, Fu-Gong Yu, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6573250
    Abstract: Food or beverage where fucoidan which is derived from a fucoidan-containing substance is contained therein, added thereto and/or diluted therein. Food or beverage where fucoidan which is derived from a fucoidan-containing substance and where algins are reduced or eliminated, is contained therein. Apoptosis-inducing food or beverage where an effective amount of fucoidan having an apoptosis-inducing ability is contained therein.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: June 3, 2003
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Yoshihisa Umeda, Hiroshi Kihara, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6548543
    Abstract: Remedies or preventives for diseases with a need for immunoregulation, diseases with a need for inhibition of inflammation, diseases with a need for regulation of tumor necrosis factor production, diseases with a need for regulation of fungal growth, diseases with a need for regulation of cell adhesion or disease with a deed for induction of heat-shock protein, which contain as the active ingredient at least one compound selected from among cyclopentenone derivatives represented by general formula [I], optically active isomers and salts thereof, wherein R1 and R2 are the same or different and each represents hydrogen, an aliphatic group, an aromatic group or an aromatic aliphatic group.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: April 15, 2003
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Eiji Kobayashi, Hiromu Ohnogi, Hiroaki Sagawa, Takanari Tominaga, Eiji Nishiyama, Nobuto Koyama, Katsushige Ikai, Ikunoshin Kato
  • Publication number: 20030065014
    Abstract: A substance for inducing apoptosis represented by specific formulae. A pharmaceutical composition which can be used for an anticancer agent containing said substance.
    Type: Application
    Filed: October 1, 2002
    Publication date: April 3, 2003
    Inventors: Tatsuji Enoki, Nobuto Koyama, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6531148
    Abstract: Therapeutic or preventive agents for diseases requiring apoptosis induction, cancerous diseases, diseases requiring the inhibition of active oxygen production, those requiring the inhibition of nitrogen monoxide production, those requiring the inhibition of prostaglandin synthesis, those requiring the inhibition of synovial cell proliferation, those requiring the induction of heat shock protein production or those requiring the inhibition of &agr;-glycosidase, which contain as the active ingredient compounds selected from among compounds represented by general formula (I), (wherein X and Y are each H or CH2OH, provided that when X is CH2OH, Y is H, while when X is H, Y is CH2OH), those represented by general formula (II), (wherein R is a residue obtained by freeing a compound having an SH group from the SH group) and salts of both; and foods, drinks, cosmetics and so on, containing compounds selected from among compounds of general formula (I), those of general formula (II) and salts of both
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: March 11, 2003
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Tatsuji Enoki, Jun Tomono, Nobuto Koyama, Katsushige Ikai, Hiroaki Sagawa, Ikunoshin Kato
  • Patent number: 6525082
    Abstract: A substance for inducing apoptosis represented by specific formulae. A pharmaceutical composition which can be used for an anticancer agent containing said substance.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: February 25, 2003
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Tatsuji Enoki, Nobuto Koyama, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6482806
    Abstract: A product obtained by heating at least one substance selected from the following (a), (b) and (c). (a) uronic acid or uronic acid derivative; (b) a saccharide compound containing uronic acid or a saccharide compound containing uronic acid derivative; and (c) a substance containing a saccharide compound containing uronic acid or a substance containing a saccharide compound containing uronic acid derivative; and food, beverage or a pharmaceutical agent which is characterized in containing the above-mentioned heat-treated product.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: November 19, 2002
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Nobuto Koyama, Hiroaki Sagawa, Eiji Kobayashi, Tatsuji Enoki, Hua-Kang Wu, Eiji Nishiyama, Suzu Deguchi, Katsushige Ikai, Hiromu Ohnogi, Motoko Ueda, Akihiro Kondo, Ikunoshin Kato
  • Patent number: 6475990
    Abstract: Medicinal compositions for treating, ameliorating or preventing diseases with sensitivity to 3,6-anhydrogalactopyranose represented by formula (1): foods, drinks, cosmetics, etc. containing as the active ingredient at least one member selected from the group consisting of the above-mentioned compound, its aldehyde, its hydrate and 2-O-methylated derivatives thereof and soluble sugar compounds containing the above compound. This compound also shows, for example, an apoptosis-inducing activity, a carcinostatic activity and inhibitory activities on the production of active oxygen, lipid peroxide radicals and NO, which makes it useful also as the active ingredient of antioxidants and preservatives.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: November 5, 2002
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Tatsuji Enoki, Hiroaki Sagawa, Takanari Tominaga, Eiji Nishiyama, Nobuto Koyama, Takeshi Sakai, Fu-Gong Yu, Katsushige Ikai, Ikunoshin Kato
  • Publication number: 20020076431
    Abstract: Food or beverage where fucoidan which is derived from a fucoidan-containing substance is contained therein, added thereto and/or diluted therein. Food or beverage where fucoidan which is derived from a fucoidan-containing substance and where algins are reduced or eliminated is contained therein. Apoptosis-inducing food or beverage where an effective amount of fucoidan having an apoptosis-inducing ability is contained therein.
    Type: Application
    Filed: November 15, 2001
    Publication date: June 20, 2002
    Inventors: Yoshihisa Umeda, Hiroshi Kihara, Katsushige Ikai, Ikunoshin Kato
  • Patent number: 6379947
    Abstract: A novel endo-fucoidan-lyase and a novel microorganism, Fucoidanobacter marinus SI-0098 (FERM BP-5403) useful in the production of sugar compounds are disclosed Sugar compounds represented by the following general formula (1), wherein at least one of alcoholic hydroxyl group has been sulfated, or salts thereof: wherein Y represents hydrogen or a group represented by the following formula (2).
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: April 30, 2002
    Assignees: Takara Shuzo Co., Ltd., Research Institute for Glycotechnology
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Katsushige Ikai, Sumiko Akiyoshi, Yoshikuni Nakanishi, Ikunoshin Kato
  • Patent number: 6380262
    Abstract: 5-Membered ring compounds represented by general formula (I), optically active isomers thereof or salts of the same. These compounds have physiological activities including a carcinostatic effect. In said formula the bond shown by the dotted line in the 5-membered ring represents that this 5-membered ring may be either a cyclopentene ring having a double bond or a saturated cyclopentane ring, and when the 5-membered ring is a cyclopentene ring, X is OR1, Y is ═O and Z is H, and when it is a cyclopentane ring, X is ═O, Y is OR2 and Z is OR3, (wherein R1 is R4 or —(CO)—R5; R2 is H, —R6 or —(CO)—R7; and R3 is H, R8 or (CO)—R9 (wherein R4, R5, R6, R7, R8 and R9 are the same or different and each represents an aliphatic, aromatic or aliphatic aromatic group, and R5, R7 and R9 may be each H), provided that the case where R2═R3═H is excluded); and W represents a residue obtained by eliminating SH from an SH-containing compound.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: April 30, 2002
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Eiji Kobayashi, Hiromu Ohnogi, Nobuto Koyama, Katsushige Ikai, Hiroaki Sagawa, Ikunoshin Kato
  • Patent number: 6350917
    Abstract: Crystals of trans-4,5-dihydroxy-2-cyclopenten-1-one of an &agr;-type.
    Type: Grant
    Filed: December 29, 1999
    Date of Patent: February 26, 2002
    Assignee: Takara Shuzo Co., Ltd.
    Inventors: Makoto Moriguchi, Katsushige Ikai, Masao Funakoshi, Hiroshi Kobori, Kazuyori Ochiai, Ikunoshin Kato
  • Publication number: 20020016299
    Abstract: An apoptosis inducing agent or an anticancer agent which is characterized in containing glycerolipid and/or glyceroglycolipid as effective component(s).
    Type: Application
    Filed: April 5, 1999
    Publication date: February 7, 2002
    Inventors: TAKESHI SAKAI, NOBUTO KOYAMA, YOKO TATSUMI, HIROAKI SAGAWA, FU-GONG YU, KATSUSHIGE IKAI, IKUNOSHIN KATO
  • Publication number: 20010046696
    Abstract: A novel endo-fucoidan-lyase and a novel microorganism useful in the production of sugar compounds.
    Type: Application
    Filed: June 29, 2001
    Publication date: November 29, 2001
    Inventors: Takeshi Sakai, Hitomi Kimura, Kaoru Kojima, Katsushige Ikai, Sumiko Akiyoshi, Yoshikuni Nakanishi, Ikunoshin Kato