Patents by Inventor Masaaki Tokuda

Masaaki Tokuda 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: 20130012459
    Abstract: A composition for inhibiting the onset of arteriosclerosis is characterized by comprising D-psicose as an active ingredient for an antiatherogenic action. The antiatherogenic action as described above includes an action of inhibiting or reducing the expression of a chemokine or a cytokine related to arteriosclerosis in vivo and an action of promoting the expression of a receptor involved in the improvement of arteriosclerosis without affecting the expression of an arteriosclerosis inducer. This composition is used in the form of a product selected from the group consisting of sweeteners, seasonings, food additives, food materials, foods and drinks, health foods and drinks, drugs, quasi drugs and feeds blended with D-psicose and/or its derivative and/or a mixture thereof as the active ingredient. The method of inhibiting the onset of arteriosclerosis is a method of using the above composition.
    Type: Application
    Filed: July 12, 2012
    Publication date: January 10, 2013
    Applicants: MATSUTANI CHEMICAL INDUSTRY CO., LTD., NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY
    Inventors: Masaaki Tokuda, Kouji Murao, Toshihiko Ishida, Ken Izumori
  • Patent number: 8227232
    Abstract: Object: To provide a thermostable L-ribose isomerase. Means for Resolution: The thermostable L-ribose isomerase with MW. 32,000 (by SDS-PAGE), optimal temperature of 45° C., optimal pH of pH 9.0 (glycine-NaOH buffer), and stable physicochemical properties such as temperature stability up to 45° C. during thermal treatment at pH 9.0 for 10 minutes, and with an action to isomerize L-ribose to generate L-ribulose or of inversely to isomerize L-ribulose to generate L-ribose.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: July 24, 2012
    Assignees: National University Corporation Kagawa Univeristy, Rare Sugar Production Technical Research Laboratories, LLC., Matsutani Chemical Industry Co., Ltd.
    Inventors: Ken Izumori, Kenji Morimoto, Goro Takata, Masaaki Tokuda, Yoshio Tsujisaka, Kei Takeshita, Keiji Tsusaki, Kazuhiro Okuma
  • Publication number: 20120111003
    Abstract: A Rankine cycle (6) of a waste heat utilization device includes a circulation path (7) for circulating a working fluid therethrough, an evaporator (12) for causing heat to transfer from cooling water delivered from an internal combustion engine (2) to the working fluid to evaporate the working fluid, a superheater (10) for causing heat to transfer from the cooling water delivered from an exhaust gas heat exchanger (8) to the working fluid delivered from the evaporator to superheat the working fluid, an expander (22) for expanding the working fluid delivered from the superheater to produce driving force, a condenser (24) for condensing the working fluid delivered from the expander, and a pump (28) for feeding the working fluid delivered from the condenser to the evaporator. The evaporator, the superheater, the expander, the condenser and the pump are successively inserted in the working fluid circulation path.
    Type: Application
    Filed: August 25, 2009
    Publication date: May 10, 2012
    Applicant: Sanden Corporation
    Inventors: Junichiro Kasuya, Tetsuya Nakano, Tomohiko Saito, Masaaki Tokuda, Satoshi Ogiwara
  • Patent number: 8071558
    Abstract: A novel use of D-psicose (for suppressing the abnormal intra-day increase of blood glucose level) is provided. A composition containing D-psicose as the active component and for use in suppressing the abnormal intra-day increase of plasma glucose concentration. The composition is a composition in blend with D-psicose and/or a derivative thereof.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: December 6, 2011
    Assignee: Rare Sugar Production Technical Research Laboratories, LLC.
    Inventors: Masaaki Tokuda, Ken Izumori, Tatsuhiro Matsuo, Kenji Morimoto, Kaoru Takekawa
  • Publication number: 20110230659
    Abstract: Provided is a compound having at least one selected from the group consisting of cell growth promoting activity, angiogenesis promoting activity, lumen formation promoting activity, cell migration promoting activity, and neurocyte growth promoting activity, which is a chemically stable low-molecular-weight substance that has high absorbability and can be supplied stably at a low cost because of its low molecular weight. A cyclobutyl purine derivative, a tautomer or stereoisomer thereof, or a salt, solvate, or hydrate thereof according to the present invention is a cyclobutyl purine derivative represented by the following general formula (1), a tautomer or stereoisomer thereof, or a salt, solvate, or hydrate thereof.
    Type: Application
    Filed: November 27, 2009
    Publication date: September 22, 2011
    Applicant: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY
    Inventors: Ikuko Tsukamoto, Ryoji Konishi, Masaaki Tokuda, Yasuo Kubota, Tokumi Maruyama, Hiroaki Kosaka, Junsuke Igarashi
  • Publication number: 20110112043
    Abstract: A method of utilizing the physiological activity of a rare saccharide, wherein physiological-activity sensitive cells are treated with the rare saccharide to modify the function of the cells. A composition containing, as an active ingredient, a rare saccharide which is introduced into physiological-activity sensitive cells and has an effect of modifying the function of the cells. The cells are human cells. The composition is a functional food, a drug, or a cosmetic. The rare saccharide is a rare saccharide belonging to aldose and/or ketose. The aldose is D-allose, and the cells are selected from the group consisting of cancer-cell proliferation inhibitory activity sensitive cells and active-oxygen production inhibitory activity sensitive cells. The ketose is D-psicose, and the cells are selected from the group consisting of chemokine secretion inhibitory activity sensitive cells, microglia migration inhibitory activity sensitive cells, and hypoglycemic activity sensitive cells.
    Type: Application
    Filed: January 14, 2011
    Publication date: May 12, 2011
    Applicants: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, MATSUTANI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Ken Izumori, Masaaki Tokuda, Toshifumi Itano, Osamu Miyamoto, Toshihiko Ishida, Koji Murao, Taizo Tasaka, Gan Muneuchi, Fuminori Yamaguchi, Terukazu Tanaka, Masaaki Ueki, Kazuyuki Hirooka, Tomohiko Taminato, Mohammad Akram Hossain, Keiji Tsusaki, Takeo Takahashi, Mitsuhiro Nagata, Yutaka Ishida
  • Patent number: 7906487
    Abstract: A method of utilizing the physiological activity of a rare saccharide, wherein physiological-activity sensitive cells are treated with the rare saccharide to modify the function of the cells. A composition containing, as an active ingredient, a rare saccharide which is introduced into physiological-activity sensitive cells and has an effect of modifying the function of the cells. The cells are human cells. The composition is a functional food, a drug, or a cosmetic. The rare saccharide is a rare saccharide belonging to aldose and/or ketose. The aldose is D-allose, and the cells are selected from the group consisting of cancer-cell proliferation inhibitory activity sensitive cells and active-oxygen production inhibitory activity sensitive cells. The ketose is D-psicose, and the cells are selected from the group consisting of chemokine secretion inhibitory activity sensitive cells, microglia migration inhibitory activity sensitive cells, and hypoglycemic activity sensitive cells.
    Type: Grant
    Filed: May 22, 2003
    Date of Patent: March 15, 2011
    Assignees: Fushimi Pharmaceutical Co., Ltd., Teikoku Seiyaku Co., Ltd., National University Corporation Kagawa University, Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Ken Izumori, Masaaki Tokuda, Toshifumi Itano, Osamu Miyamoto, Toshihiko Ishida, Koji Murao, Taizo Tasaka, Gan Muneuchi, Fuminori Yamaguchi, Terukazu Tanaka, Masaaki Ueki, Kazuyuki Hirooka, Tomohiko Taminato, Mohammad Akram Hossain, Keiji Tsusaki, Takeo Takahashi, Mitsuhiro Nagata, Yutaka Ishida
  • Publication number: 20100294217
    Abstract: A waste heat utilization device for an internal combustion engine (2) comprising a cooling water circuit (4) including a radiator (12) for cooling cooling-water by means of outside air drawn to pass through the radiator, a Rankine cycle (6) including a first condenser (24) for condensing a refrigerant, and a refrigeration cycle (8) including a second condenser (36) for condensing a refrigerant, wherein the first and second condensers (24, 36) are water-cooled heat exchangers, and the waste heat utilization device includes a water circuit (44) including an air-cooled heat exchanger (46) for cooling water that has passed through the first and second condensers (24, 36), by means of outside air drawn to pass through the air-cooled heat exchanger, and a heat exchange unit composed of the air-cooled heat exchanger (46) and the radiator (12).
    Type: Application
    Filed: January 19, 2009
    Publication date: November 25, 2010
    Inventors: Junichiro Kasuya, Satoshi Ogiwara, Masaaki Tokuda, Tomohiko Saito
  • Publication number: 20100222284
    Abstract: [Object] To provide a composition for inhibiting the onset of arteriosclerosis by using a rare sugar D-psicose and a method of inhibiting the onset of arteriosclerosis. [Means for Resolution] The composition for inhibiting the onset of arteriosclerosis is characterized by comprising D-psicose as an active ingredient for an antiatherogenic action. The antiatherogenic action as described above includes an action of inhibiting or reducing the expression of a chemokine or a cytokine related to arteriosclerosis in vivo and an action of promoting the expression of a receptor involved in the improvement of arteriosclerosis without affecting the expression of an arteriosclerosis inducer. This composition is used in the form of a product selected from the group consisting of sweeteners, seasonings, food additives, food materials, foods and drinks, health foods and drinks, drugs, quasi drugs and feeds blended with D-psicose and/or its derivative and/or a mixture thereof as the active ingredient.
    Type: Application
    Filed: April 29, 2010
    Publication date: September 2, 2010
    Applicants: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, MATSUTANI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Masaaki TOKUDA, Kouji MURAO, Toshihiko ISHIDA, Ken IZUMORI
  • Publication number: 20100222285
    Abstract: A specific rare sugar having effects of inhibiting the proliferation of vascular endothelial cells and lumen formation is disclosed. This rare sugar is provided as a preventive/remedy for diseases with angiogenesis, a cosmetic or a functional food. The proliferation of vascular endothelial cells is controlled utilizing the vascular endothelial cell proliferation-controlling effect of D-mannose, D-allose, 2-deloxy-D-glucose, 3-deoxy-D-glucose, L-sorbose, 2-deoxy-D-ribose and/or 2-deoxy-L-ribose. Lumen formation of vascular endothelial cells is inhibited by utilizing the vascular endothelial cell lumen formation-inhibiting effect of D-allose, D-altrose, D-glucose, D-talose, L-allose, 2-deloxy-D-glucose, 3-deoxy-D-glucose, D-ribose, L-ribose, 2-deoxy-D-ribose and/or 2-deoxy-L-ribose.
    Type: Application
    Filed: May 7, 2010
    Publication date: September 2, 2010
    Applicant: Rare Sugar Production Technical Research Laboratories, LLC
    Inventors: Masaaki Tokuda, Ikuko Tsukamoto, Ryoji Konishi, Yasuo Kubota, Ken Izumori
  • Publication number: 20100167350
    Abstract: Problem: To provide a microorganism with an ability to produce deoxy polyol dehydrogenase. Means for Resolution: A microorganism belonging to genus Enterobacter with an ability to produce a dehydrogenase for deoxy polyol of the same structure at the positions C2 and C3 as that of ribitol or L-iditol. The bacterial cell IK7 of the genus Enterobacter (accession No. NITE P-271). A method for producing deoxy ketose comprising allowing a culture containing the deoxy polyol dehydrogenase obtained by the culturing of the microorganism of the invention or allowing the deoxy polyol dehydrogenase to react with a solution containing deoxy polyol of the same structure at the positions C2 and C3 as that of ribitol or L-iditol to oxidize deoxy polyol to produce the corresponding deoxy ketose and then collecting the deoxy ketose. The deoxy polyol is 1-deoxy-D-allitol, while the corresponding deoxy ketose is 1-deoxy-L-psicose.
    Type: Application
    Filed: March 27, 2007
    Publication date: July 1, 2010
    Applicants: NAT'L UNIVERSITY CORPORATION KAGAWA UNIVERSITY, RARE SUGAR PRODUCTION TECHNICAL RESEARCH LABS., MATSUTANI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Ken Izumori, Kenji Morimoto, Goro Takata, Masaaki Tokuda, Yoshio Tsujisaka, Kei Takeshita, Keiji Tsusaki, Kazuhiro Okuma
  • Publication number: 20100166678
    Abstract: Object: To provide a composition for preventing periodontal diseases (prophylactic agent of periodontal diseases), the composition having an excellent cariostatic property, being safe and stable for prolonged use and having less effects on flavor. Means for Resolution: A non-cariogenic material prepared by blending a rare sugar in the D form as selected from the group consisting of D-psicose, D-sorbose and D-tagatose, a rare sugar in the L form as selected from L-fructose, L-psicose and L-tagatose, or allitol as a rare sugar derivative, singly or in combination. A cariostatic agent comprising D-psicose, D-sorbose, D-tagatose, L-fructose, L-psicose and/or L-tagatose. A cariostatic agent in combination with catechins.
    Type: Application
    Filed: March 27, 2007
    Publication date: July 1, 2010
    Applicants: MATSUTANI CHEMICAL INDUSTRY CO., LTD., NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY
    Inventors: Tetsuo Iida, Takashi Ichihara, Ken Izumori, Masaaki Tokuda, Takaaki Ogawa
  • Publication number: 20100130435
    Abstract: Screening for a glucokinase-activating substance among rare sugars and providing a composition for treating disordered conditions in association with glucokinase activity, the composition containing the glucokinase-activating substance as the active ingredient. A promoting agent of glucokinase transfer from nucleus to cytoplasm, the promoting agent containing D-psicose and/or D-tagatose as the active ingredient, or a composition for preventing the onset of disordered conditions in association with glucokinase activity or for therapeutically treating the disordered conditions, which is in a form selected from a group consisting of food additives, food materials, drinks and foods, health drinks and foods, pharmaceutical product and feeds in blend with D-psicose and/or D-tagatose as the active ingredient for use in preventing the onset of disordered conditions in association with glucokinase activity or for therapeutically treating the disordered conditions.
    Type: Application
    Filed: March 27, 2007
    Publication date: May 27, 2010
    Applicants: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, MATSUTANI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Masaaki Tokuda, Ken Izumori, Yukiyasu Toyoda, Ichitomo Miwa
  • Publication number: 20100105885
    Abstract: Providing 1- or 6-deoxy products corresponding to all of aldohexoses, ketohexoses and sugar alcohols, as based on Deoxy-Izumoring, as well as a method for systematically producing those products. A method for producing deoxyketohexose and a derivative thereof using a deoxyketohexose isomerase derived from Pseudomonas cichorii ST-24 (FERM BP-2736), comprising epimerizing 1-deoxy D-ketohexose or 6-deoxy D-ketohexose or 1-deoxy L-ketohexose or 6-deoxy L-ketohexose at position 3 to produce the individually corresponding 1-deoxy D-ketohexose or 6-deoxy D-ketohexose or 1-deoxy L-ketohexose or 6-deoxy L-ketohexose as an intended product.
    Type: Application
    Filed: November 20, 2007
    Publication date: April 29, 2010
    Applicants: NAT'L UNIVERSITY CORPORATION KAGAWA UNIVERSITY, RARE SUGAR PRODUCTION TECHNICAL RESEARCH LABS., MATSUTANI CHEMICAL INDUSTRY CO., LTD., KABUSHIKI KAISHA HAYASHIBARA SEIBUTSU KAGAKU KENKYUJO
    Inventors: Ken Izumori, Masaaki Tokuda, George Fleet, Yoshio Tsujisaka, Kei Takeshita, Keiji Tsusaki, Kazuhiro Okuma
  • Patent number: 7691619
    Abstract: The invention relates to an isolated protein including an amino acid sequence represented by SEQ ID NO:2 and having an L-rhamnose isomerase activity. This novel enzyme has a higher reaction efficiency between D-psicose and D-allose and is excellent in thermal stability.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: April 6, 2010
    Assignee: Rare Sugar Production Technical Research Laboratories, LLC
    Inventors: Ken Izumori, Goro Takata, Masaaki Tokuda
  • Publication number: 20090325231
    Abstract: Object: To provide a thermostable L-ribose isomerase. Means for Resolution: The thermostable L-ribose isomerase with MW. 32,000 (by SDS-PAGE), optimal temperature of 45° C., optimal pH of pH 9.0 (glycine-NaOH buffer), and stable physicochemical properties such as temperature stability up to 45° C. during thermal treatment at pH 9.0 for 10 minutes, and with an action to isomerize L-ribose to generate L-ribulose or of inversely to isomerize L-ribulose to generate L-ribose.
    Type: Application
    Filed: March 26, 2007
    Publication date: December 31, 2009
    Applicants: NAT'L UNIVERSITY CORPORATION KAGAWA UNIVERSITY, RARE SUGAR PRODUCTION TECHNICAL RESEARCH LABS., MATSUTANI CHEMICAL INDUSTRY CO., LTD., KABUSHIKI KAISHA HAYASHIBARA SEIBUTSU KAGAKU KENKUJO
    Inventors: Ken Izumori, Kenji Morimoto, Goro Takata, Masaaki Tokuda, Yoshio Tsujisaka, Kei Takeshita, Keiji Tsusaki, Kazuhiro Okuma
  • Publication number: 20090304891
    Abstract: Providing a D-psicose-containing sweetener with the modification of the taste of D-psicose, comprising D-psicose, a sugar alcohol and/or a high intensity sweetener, preferably containing D-psicose as the main component, particularly a low-calorie sweetener and/or a sweetener giving refreshing feel in the oral cavity, as well as foods and drinks obtained by using the D-psicose-containing sweetener with the modification of the taste of D-psicose, and other products given with sweetness. The sugar alcohol is one or more sugar alcohols selected from the group consisting of sorbitol, mannitol, lactitol, maltitol, xylitol and erythritol, while the high intensity sweetener is one or more high intensity sweeteners as selected from aspartame, acesulfame K, sodium cyclamate, sodium saccharin, Sucralose (under trade name), stevia sweetener, dulcin, taumatin, neotame and monellin.
    Type: Application
    Filed: March 26, 2007
    Publication date: December 10, 2009
    Applicants: MATSUTANI CHEMICAL INDUSTRY CO., LTD., NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY
    Inventors: Hideki Fujihara, Kazuhiro Okuma, Tetsuo Iida, Ken Izumori, Masaaki Tokuda, Kazuhiro Fukuda
  • Publication number: 20090305999
    Abstract: The object is to provide a novel application of D-allose (e.g., use for prevention of hypertension or hypercardia). Thus, disclosed is a composition for preventing the increase in blood pressure which comprises D-allose as an active ingredient; or a composition containing D-allose and/or a derivative thereof, preferably in an amount of 0.1 to 50% by weight. Preferably, the composition is in a form selected from the group consisting of a food additive, a food material, a beverage/food, a health beverage/food, a pharmaceutical and a feeding stuff which can be used for the prevention and treatment of a cardiovascular system disorder (e.g., hypertension, hypercardia). The increase in blood pressure may be caused by salt-sensitive hypertension. Also disclosed is use of D-allose for preventing the increase in blood pressure (excluding medical practices).
    Type: Application
    Filed: August 31, 2006
    Publication date: December 10, 2009
    Applicants: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, FUSHIMI PHARMACEUTICAL CO., LTD.
    Inventors: Masaaki Tokuda, Shoji Kimura, Ken Izumori
  • Publication number: 20090216117
    Abstract: A drug in the form of a solid preparation soluble or suspendable in water or an aqueous solution characterized by containing at least one biocompatible, gastric motility suppressing component such as triacetin, which is capable of transmitting ultrasonic wave to a target organ via the solution pooled in the body in a noninvasive examination (for example, an ultrasonic examination of an abdominal organ), identifying the area in which the solution exists, or clarifying the boundary of the solution and an organ in contact therewith, is employed as an auxiliary agent in the examination. In addition, triacetin can be extensively used as a gastric motility suppressor.
    Type: Application
    Filed: April 17, 2006
    Publication date: August 27, 2009
    Applicants: SHINSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, FUSHIMI PHARMACEUTICAL CO., LTD.
    Inventors: Shozo Koyama, Masaaki Tokuda, Yoshiyuki Hori, Kazumasa Ohsaka
  • Publication number: 20090068710
    Abstract: Disclosed is a process for producing a crystalline sugar comprising D-psicose and D-allose. Also disclosed is a process for producing the sugar. A complex crystalline sugar comprising D-psicose and D-allose. The compositional ratio between D-psicose and D-allose in the sugar is about 1:1 to 1:4. A process for producing a complex crystalline sugar comprising D-psicose and D-allose, the process comprising producing a complex crystalline sugar comprising D-psicose and D-allose from a sugar solution containing D-psicose and p-allose and collecting the complex crystalline sugar. The solvent of the sugar solution used in the production of the complex crystalline sugar is water or a mixture of water and ethanol. The sugar solution containing D-psicose and D-allose is produced by a process comprising reacting D-psicose with L-rhamnose isomerase to convert D-psicose into D-allose. The L-rhamnose isomerase is derived from a strain (IPOD FERM BP-08593) belonging to Pseudomonas stutzeri.
    Type: Application
    Filed: March 3, 2006
    Publication date: March 12, 2009
    Applicants: NATIONAL UNIVERSITY CORPORATION KAGAWA UNIVERSITY, MATSUTANI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Ken Izumori, Masaaki Tokuda, Goro Takata, Kenji Morimoto