Patents by Inventor Hiroto Chaen

Hiroto Chaen 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: 5900262
    Abstract: A highly digestible, good preference, relatively high-quality fermented formula feed which is obtainable by mixing a soybean feed material and a wheat splinter capable of decomposing phytin in an amount of not less than that of the soybean feed material, d.s.b., and subjecting the mixture to a lactic acid fermentation under humid conditions.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: May 4, 1999
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Satoshi Iritani, Yoshinori Sato, Hiroto Chaen, Toshio Miyake
  • Patent number: 5883243
    Abstract: .alpha.-Isomaltosyl .alpha.-isomaltoside represented by O-.alpha.-D-glucopyranosyl-(1.fwdarw.6)-.alpha.-D-glucopyranosyl O-.alpha.-D-glucopyranosyl-(1.fwdarw.6)-.alpha.-D-glucopyranoside is a novel non-reducing saccharide which promotes the growth of bifid bacteria, has an anti-caries activity, and promotes the mineral absorption. Similarly as the non-reducing saccharide, .alpha.-isomaltosyl .alpha.-glucoside and .alpha.-isomaltotriosyl .alpha.-glucoside can be also used to prevent caries and promote the growth of bifid bacteria and the mineral absorption. These saccharides can be used alone or in combination in a variety of foods, cosmetics and pharmaceuticals.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: March 16, 1999
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tomoyuki Nishimoto, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5876975
    Abstract: A thermostable trehalose phosphorylase which is obtainable from microorganisms of the genus Thermoanaerobium and which hydrolyzes trehalose in the presence of an inorganic phosphoric acid to form D-glucose and .beta.-D-glucose-1-phosphoric acid. The trehalose phosphorylase can be also prepared by recombinant DNA technology. When the enzyme is allowed to contact with .beta.-D-glucose-1-phosphoric acid as a saccharide donor in the presence of other saccharides, glucosyl-transferred saccharides including glucosyl-D-galactoside, which are conventionally known but scarcely obtainable, can be produced on an industrial-scale and in a relatively-low cost.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: March 2, 1999
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Nakada, Michio Kubota, Hiroto Chaen, Toshio Miyake
  • Patent number: 5858992
    Abstract: .alpha.-Isomaltosyl .alpha.-isomaltoside represented by O-.alpha.-D-glucopyranosyl -(1.fwdarw.6)-.alpha.-D-glucopyranosyl O-.alpha.-D-glucopyranosyl-(1.fwdarw.6) -.alpha.-D-glucopyranoside is a novel non-reducing saccharide which promotes the growth of bifid bacteria, has an anti-caries activity, and promotes the mineral absorption. Similarly as the non-reducing saccharide, .alpha.-isomaltosyl .alpha.-glucoside and .alpha.-isomaltotriosyl .alpha.-glucoside can be also used to prevent caries and promote the growth of bifid bacteria and the mineral absorption. These saccharides can be used alone or in combination in a variety of foods, cosmetics and pharmaceuticals.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: January 12, 1999
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tomoyuki Nishimoto, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5846808
    Abstract: Disclosed is a novel amylase which mainly forms maltohexaose and maltoheptaose when reacted with starch, but does not substantially hydrolyze maltohexaose and an oligosaccharide of lower molecular than maltohexaose. The amylase can be prepared from microorganisms of the genus Alcaligenes, and has a relatively-high optimum temperature and thermal stability, as well as a relatively-wide range of optimum pH and pH stability. By using the amylase, saccharide compositions rich in maltohexaose and/or maltoheptaose or those rich on maltohexaitol and/or maltoheptaitol can be readily prepared in an industrial scale, and the saccharide compositions thus obtained can be used in a variety of food products, cosmetics and pharmaceuticals.
    Type: Grant
    Filed: April 28, 1997
    Date of Patent: December 8, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Masayuki Nakano, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5843748
    Abstract: A thermostable trehalose phosphorylase which is obtainable from microorganisms of the genus Thermoanaerobium and which hydrolyzes trehalose in the presence of an inorganic phosphoric acid to form D-glucose and .beta.-D-glucose-1-phosphoric acid. The trehalose phosphorylase can be also prepared by recombinant DNA technology. When the enzyme is allowed to contact with .beta.-D-glucose-1-phosphoric acid as a saccharide donor in the presence of other saccharides, glucosyl-transferred saccharides including glucosyl-D-galactoside, which are conventionally known but scarcely obtainable, can be produced on an industrial-scale and in a relatively-low cost.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: December 1, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Nakada, Michio Kubota, Hiroto Chaen, Toshio Miyake
  • Patent number: 5837527
    Abstract: A .beta.-fructofuranosidase with a molecular weight of 49,000.+-.5,000 daltons on SDS-PAGE, an isoelectric point of 4.6.+-.0.5, an optimum pH of about 5.5-6.0, and an optimum temperature of about 50.degree. C. in the presence of calcium ion. The enzyme acts on saccharides with a .beta.-fructofuranosidic linkage and other substances including other saccharides, sugar alcohols, and alcohols to produce fructosyl-transferred saccharides in a relatively high yield.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: November 17, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Nakada, Hiroto Chaen, Toshiyuki Sugimoto
  • Patent number: 5830914
    Abstract: An apoptosis-controlling agent comprising a carrier and as an effective ingredient 3-?4-hydroxy-3,5-bis(3-methyl-2-butenyl)phenyl!-2-propenoic acid and/or its physiologically acceptable salt(s). The agent promotes the apoptosis of abnormal cells without substantially affecting the apoptosis of normal cells.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: November 3, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuo Kimoto, Hiroto Chaen, Masashi Kurimoto
  • Patent number: 5824521
    Abstract: A saccharide composition containing trehalulose, which is obtainable by allowing a maltose/trehalose converting enzyme to act on a sucrose solution to produce trehalulose, and collecting the resulting trehalulose-containing mixture. Since the enzyme converts sucrose into trehalulose in a relatively high yield and the conversion rate is controllable, a saccharide composition rich in trehalulose is readily obtained on an industrial scale.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: October 20, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tomoyuki Nishimoto, Hiroto Chaen, Shigeharu Fukuda, Toshio Miyake
  • Patent number: 5759610
    Abstract: Microorganisms which are able to produce maltose/trehalose conversion enzyme, a novel enzyme, are cultivated in nutrient culture media with malose. During the cultivation, the microorganisms readily convert maltose into trehalose to accumulate trehalose in the cultures which yield saccharide mixtures with high trehalose contents when separated from insoluble substances. Removal of contaminant saccharides and subsequent crystallization readily yield trehalose in crystalline trehalose hydrate or anhydrous crystalline form. The trehalose and saccharide mixture containing the same commonly bear desirable properties including mild sweetness and superior stability which render them very useful in a variety of compositions indlucing food products, cosmetics and medicines.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: June 2, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tomoyuki Nishimoto, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5753469
    Abstract: A .beta.-fructofuranosidase with a molecular weight of 49,000.+-.5,000 daltons on SDS-PAGE, an isoelectric point of 4.6.+-.0.5, an optimum pH of about 5.5-6.0, and an optimum temperature of about 50.degree. C. in the presence of calcium ion. The enzyme acts on saccharides with a .beta.-fructofuranosidic linkage and other substances including other saccharides, sugar alcohols, and alcohols to produce fructosyl-transferred saccharides in a relatively high yield.
    Type: Grant
    Filed: December 11, 1996
    Date of Patent: May 19, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Nakada, Hiroto Chaen, Toshiyuki Sugimoto
  • Patent number: 5747300
    Abstract: Microorganisms which are able to produce maltose/trehalose conversion enzyme, a novel enzyme, are cultivated in nutrient culture media with malose. During the cultivation, the microorganisms readily convert maltose into trehalose to accumulate trehalose in the cultures which yield saccharide mixtures with high trehalose contents when separated from insoluble substances. Removal of contaminant saccharides and subsequent crystallization readily yield trehalose in crystal-line trehalose hydrate or anhydrous crystalline form. The trehalose and saccharide mixture containing the same commonly bear desirable properties including mild sweetness and superior stability which render them very useful in a variety of compositions including food products, cosmetics and medicines.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: May 5, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kaguku Kenkyujo
    Inventors: Tomoyuki Nishimoto, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5739024
    Abstract: Disclosed is a novel amylase which mainly forms maltohexaose and maltoheptaose when acts on starch, but does not substantially hydrolyze maltohexaose and a lower molecular oligosaccharide than maltohexaose. The amylase can be prepared from microorganisms of the genus Alcaligenes, and has a relatively-high optimum temperature and thermal stability, as well as a relatively-wide range of optimum pH and pH stability. By using the amylase, saccharide compositions rich in maltohexaose and/or maltoheptaose or those rich in maltohexaitol and/or maltoheptaitol can be readily prepared in an industrial scale, and the saccharide compositions thus obtained can be used in a variety of food products, cosmetics and pharmaceuticals.
    Type: Grant
    Filed: September 11, 1995
    Date of Patent: April 14, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Masayuki Nakano, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5736380
    Abstract: An enzyme, which has a molecular weight of about 57,000-120,000 daltons on SDS-PAGE and a pI of about 3.8-5.1 on isoelectrophoresis using ampholyte, converts maltose into trehalose and vice versa. The enzyme was isolated from microorganisms of the genera Pimelobacter, Pseudomonas and Thermus. By using the enzyme, trehalose is readily formed from a commercially available maltose in an industrial scale and a relatively-low cost. Trehalose and saccharide compositions containing the same, which are preparable with the enzyme, are suitably used in food products, cosmetic compositions and pharmaceutical compositions.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 7, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tomoyuki Nishimoto, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5714368
    Abstract: Disclosed are novel thermostable non-reducing saccharides-forming enzyme, its preparation and uses. The enzyme is obtainable from the culture of microorganisms such as Sulfolobus acidocaldarius (ATCC 33909 and ATCC 49426) and Sulfolobus solfataricus (ATCC 35091 and ATCC 35092), and capable of forming non-reducing saccharides having a trehalose structure as an end unit when allowed to act on reducing partial starch hydrolysates at a temperature of over 55.degree. C. Glucoamylase and .alpha.-glucosidase readily yield trehalose when allowed to act on the non-reducing saccharides. These non-reducing saccharides and trehalose are extensively useful in food products, cosmetics and pharmaceuticals.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 3, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Tetsuya Nakada, Hiroto Chaen, Toshiyuki Sugimoto, Toshio Miyake
  • Patent number: 5714476
    Abstract: Neotrehalose is prepared in a relatively high-yield by a process comprising allowing .beta.-galactosidase to act on a solution containing lactoneotrehalose to form neotrehalose and recoverying the resultant neotrehalose. The neotrehalose is a non-reducing oligosaccharide having a satisfiable stability and a rich- and high-quality-sweetness and is assimilated and utilized as energy source in vivo when orally administered. Neotrehalose in the form of crystal has a satisfiable handleability because it is readily soluble in water and substantially free of hygroscopicity. These render neotrehalose very useful in the fields of food-, cosmetic- and pharmaceutical-industries.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: February 3, 1998
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Yoshikatsu Miwa, Takashi Shibuya, Hiroto Chaen
  • Patent number: 5622859
    Abstract: Disclosed is an alkali-treated bagasse prepared by softening a bagasse with calcium oxide together with or without sodium hydroxide while preventing the substantial decomposition of cellulose and hemicellulose, a bagasse feed and a fermented bagasse feed prepared from the alkali-treated bagasse, and their preparations and uses as well as bacteria for fermenting the alkali-treated bagasse. These bagasse and bagasse feeds save sugar-refinery industries from the difficulties to treat bagasse deemed as an unutilized industrial waste, and livestock farming industries from the shortage of roughage, and further is extremely significant in agriculture, industries of sweetening products, feed industries and livestock product processors. A bacterium strain particularly useful for the fermentation is Enterococcus faecium FERM BP-4504.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: April 22, 1997
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Satoshi Iritani, Masakazu Mitsuhashi, Hiroto Chaen, Toshio Miyake
  • Patent number: 5604211
    Abstract: A composition for supplementing energy to a living body containing neotrehalose as effective ingredient. Neotrehalose is a disaccharide, therefore, when used in an energy supplementing composition, provides twice as much energy as does a monosaccharide. Neotrehalose has non-reducing properties, and this renders the composition containing neotrehalose stable for a relatively-long time period.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: February 18, 1997
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Takashi Shibuya, Hiroto Chaen, Shuzo Sakai, Toshio Miyake
  • Patent number: 5578469
    Abstract: Disclosed are a novel preparation of neotrehalose and its uses. The preparation comprises allowing .alpha.-amylase to act on an amylaceous substance to form neotrehalose, and recovering said neotrehalose. The neotrehalose has a satisfiable chemical stability, as well as other properties such as a sweeteness, energy-imparting ability, osmosis-regulating ability, filler-imparting ability, gloss-imparting ability, moisture-retaining ability, viscosity-imparting ability, crystallization-preventing ability, and non-fermentability. These properties render the neotrehalose advantageously useful in preparations of a variety of compositions.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: November 26, 1996
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Takashi Shibuya, Hiroto Chaen, Shuzo Sakai, Toshio Miyake
  • Patent number: 5547692
    Abstract: A highly-digestible, preferred taste and high-quality fermented bagasse feed prepared by incorporating a lactic acid bacterium capable of proliferating in an alkaline nutrient culture medium of not less than pH 9.5 or in a nutrient culture medium containing sodium chloride of 6.5 w/w % into an alkali-treated bagasse which is prepared by softening a bagasse while preventing the substantial decomposition of cellulose and hemicellulose, and succeedingly fermenting the resultant mixture, and to its preparation and uses.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: August 20, 1996
    Assignee: Kabushiki Kaisha Hayashibara Seitbutsu Kagaku Kenkyujo
    Inventors: Satoshi Iritani, Masakazu Mitsuhashi, Hiroto Chaen, Toshio Miyake