Patents by Inventor Takayasu Tsuchida
Takayasu Tsuchida 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).
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Patent number: 6818434Abstract: Novel cellulose-producing bacteria including one capable of producing of a bacterial cellulose having a weight-average degree of polymerization in terms of polystyrene of 1.6×104 or above, one capable of producing a bacterial cellulose containing a small amount of the fraction with low degrees of polymerization, one producing a Bingham polysaccharide as a by-product, and one producing a small amount of water-soluble polysaccharide; a method for the production of bacterial cellulose, which comprises culturing these cellulose-producing bacteria; and bacterial cellulose thus obtained.Type: GrantFiled: June 5, 2002Date of Patent: November 16, 2004Assignee: Ajinomoto Co., Inc.Inventors: Kunihiko Watanabe, Hiroshi Takemura, Mari Tabuchi, Naoki Tahara, Hiroshi Toyosaki, Yasushi Morinaga, Takayasu Tsuchida, Hisato Yano, Fumihiro Yoshinaga
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Patent number: 6573076Abstract: An object of the present invention is to provide novel genes and gene group involved in cellulose synthesis of microorganisms. The present invention relates to a gene group encoding cellulase, cellulose synthase complex, &bgr;-glucosidase and the like, and to novel &bgr;-glucosidase.Type: GrantFiled: March 9, 2000Date of Patent: June 3, 2003Assignee: Ajinomoto Co., Inc.Inventors: Naoto Tonouchi, Takayasu Tsuchida, Fumihiro Yoshinaga, Naoki Tahara, Hisato Yano, Takahisa Hayashi
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Publication number: 20030032148Abstract: Novel cellulose-producing bacteria including one capable of producing of a bacterial cellulose having a weight-average degree of polymerization in terms of polystyrene of 1.6×104 or above, one capable of producing a bacterial cellulose containing a small amount of the fraction with low degrees of polymerization, one producing a Bingham polysaccharide as a by-product, and one producing a small amount of water-soluble polysaccharide; a method for the production of bacterial cellulose, which comprises culturing these cellulose-producing bacteria; and bacterial cellulose thus obtained.Type: ApplicationFiled: June 5, 2002Publication date: February 13, 2003Applicant: Bio-Polymer Research Co., Ltd.Inventors: Kunihiko Watanabe, Hiroshi Takemura, Mari Tabuchi, Naoki Tahara, Hiroshi Toyosaki, Yasushi Morinaga, Takayasu Tsuchida, Hisato Yano, Fumihiro Yoshinaga
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Patent number: 6391576Abstract: The present invention provides a method for isolating a microbe whereby a sample of microbe cells is encapsulated in agarose gel particulates, wherein some of the particulates contain a single cell, and the other particulates contain more than one cell; incubating the particulates in nutritional and environmental conditions that enable the microbe contained in the sample solution that can grow on a plate of a plate culture method to grow in the agarose gel particulate; and isolating the particulates having single cells from the group of the particulates having more than one cell.Type: GrantFiled: March 3, 2000Date of Patent: May 21, 2002Assignees: Japan Bioindustry Association, Ajinomoto Co., Inc., Agency of Industrial Science and TechnologyInventors: Takayasu Tsuchida, Akira Manome, Ryuichiro Kurane
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Publication number: 20010044138Abstract: Novel cellulose-producing bacteria including one capable of producing of a bacterial cellulose having a weight-average degree of polymerization in terms of polystyrene of 1.6×104 or above, one capable of producing a bacterial cellulose containing a small amount of the fraction with low degrees of polymerization, one producing a Bingham polysaccharide as a by-product, and one producing a small amount of water-soluble polysaccharide; a method for the production of bacterial cellulose, which comprises culturing these cellulose-producing bacteria; and bacterial cellulose thus obtained.Type: ApplicationFiled: May 1, 2001Publication date: November 22, 2001Applicant: Bio-Polymer Research Co., Ltd.Inventors: Kunihiko Watanabe, Hiroshi Takemura, Mari Tabuchi, Naoki Tahara, Hiroshi Toyosaki, Yasushi Morinaga, Takayasu Tsuchida, Hisato Yano, Fumihiro Yoshinaga
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Patent number: 6316251Abstract: An object of the present invention is to provide novel genes and gene group involved in cellulose synthesis of microorganisms. The present invention relates to a gene group encoding cellulase, cellulose synthase complex, &bgr;-glucosidase and the like, and to novel &bgr;-glucosidase.Type: GrantFiled: April 8, 1999Date of Patent: November 13, 2001Assignee: Bio-Polymer Research Co., Ltd.Inventors: Naoto Tonouchi, Takayasu Tsuchida, Fumihiro Yoshinaga, Naoki Tahara, Hisato Yano, Takahisa Hayashi
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Patent number: 6140105Abstract: Novel cellulose-producing bacteria including one capable of producing of a bacterial cellulose having a weight-average degree of polymerization in terms of polystyrene of 1.6.times.10.sup.4 or above, one capable of producing a bacterial cellulose containing a small amount of the fraction with low degrees of polymerization, one producing a Bingham polysaccharide as a by-product, and one producing a small amount of water-soluble polysaccharide; a method for the production of bacterial cellulose, which comprises culturing these cellulose-producing bacteria; and bacterial cellulose thus obtained.Type: GrantFiled: July 23, 1999Date of Patent: October 31, 2000Assignee: Bio-Polymer Research Co., Ltd.Inventors: Kunihiko Watanabe, Hiroshi Takemura, Mari Tabuchi, Naoki Tahara, Hiroshi Toyosaki, Yasushi Morinaga, Takayasu Tsuchida, Hisato Yano, Fumihiro Yoshinaga
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Patent number: 6110712Abstract: This invention relates to a microorganism that is capable of producing a cellulosic product (referred to hereinafter as a "cellulose-producing bacterium") and belongs to a novel subspecies which is substantialy negative or very slightly positive in oxidation of acetates and lactates. This invention also relates to novel saccharide analog-resistant strains, amino acid analog-resistant strains and levan sucrase-defective strains. Further, this invention relates to a method for the production of cellulosic material (bacterial cellulose:"BC"), which comprises culturing these novel bactria and to bacterial cellulose which may be thus obtained. A larger amount of bacterial cellulose may be produced by culturing Acetobacter xylinum subsp. nonacetoxidans, the present resistant strains and the levan sucrase-defective strains, which have been derived and bred from the cellulose-producing bacteria, than by culturing the BPR 2001 strain in the medium containing especially sucrose or glucose as carbon sources.Type: GrantFiled: March 23, 1999Date of Patent: August 29, 2000Assignee: Bio-Polymer Research Co., Ltd.Inventors: Takayasu Tsuchida, Naoto Tonouchi, Akira Seto, Yukiko Kojima, Masanobu Matsuoka, Fumihiro Yoshinaga
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Patent number: 5962277Abstract: Novel cellulose-producing bacteria including one capable of producing of a bacterial cellulose having a weight-average degree of polymerization in terms of polystyrene of 1.6.times.10.sup.4 or above, one capable of producing a bacterial cellulose containing a small amount of the fraction with low degrees of polymerization, one producing a Bingham polysaccharide as a by-product, and one producing a small amount of water-soluble polysaccharide; a method for the production of bacterial cellulose, which comprises culturing these cellulose-producing bacteria; and bacterial cellulose thus obtained.Type: GrantFiled: January 9, 1998Date of Patent: October 5, 1999Assignee: Bio-Polymer Research Co., Ltd.Inventors: Kunihiko Watanabe, Hiroshi Takemura, Mari Tabuchi, Naoki Tahara, Hiroshi Toyosaki, Yasushi Morinaga, Takayasu Tsuchida, Hisato Yano, Fumihiro Yoshinaga
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Patent number: 5962278Abstract: This invention relates to a microorganism that is capable of producing a cellulosic product (referred to hereinafter as a "cellulose-producing bacterium") and belongs to a novel subspecies which is substantialy negative or very slightly positive in oxidation of acetates and lactates. This invention also relates to novel saccharide analog-resistant strains, amino acid analog-resistant strains and levan sucrase-defective strains.Further, this invention relates to a method for the production of cellulosic material (bacterial cellulose: "BC"), which comprises culturing these novel bactria and to bacterial cellulose which may be thus obtained.A larger amount of bacterial cellulose may be produced by culturing Acetobacter xylinum subsp. nonacetoxidans, the present resistant strains and the levan sucrase-defective strains, which have been derived and bred from the cellulose-producing bacteria, than by culturing the BPR 2001 strain in the medium containing especially sucrose or glucose as carbon sources.Type: GrantFiled: February 3, 1998Date of Patent: October 5, 1999Assignee: Bio-Polymer Research Co., Ltd.Inventors: Takayasu Tsuchida, Naoto Tonouchi, Akira Seto, Yukiko Kojima, Masanobu Matsuoka, Fumihiro Yoshinaga
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Patent number: 5792630Abstract: A method for the production of a cellulosic product, which comprises:culturing a cellulose-producing microorganism transformed with a gene for an enzyme involved in sucrose metabolism in a medium containing sucrose, allowing the cellulosic product to be produced and accumulated in the medium, and collecting the cellulosic product. By the present method, the cellulosic product can be produced efficiently and economically.Type: GrantFiled: March 29, 1996Date of Patent: August 11, 1998Assignee: Bio-Polymer Research Co., Ltd.Inventors: Naoto Tonouchi, Takayasu Tsuchida, Fumihiro Yoshinaga, Sueharu Horinouchi, Teruhiko Beppu, Hideshi Yanase, Takahisa Hayashi
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Patent number: 5705370Abstract: Culturing an L-amino acid producing microorganism belonging to the genus Brevibacterium or Corynebacterium and having a resistance to a peptide containing glutamic acid or aspartic acid gives L-amino acids in high yield.Type: GrantFiled: May 12, 1995Date of Patent: January 6, 1998Assignee: Ajinomoto Company, Inc.Inventors: Takayasu Tsuchida, Haruo Uchibori, Hiroshi Takeuchi, Mitsuyoshi Seki
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Patent number: 5580782Abstract: Acetobacter sp. strain BPR 2001, an endogeneous plasmid named pAH4 derived from said strain as well as shuttle vectors constructed from said plasmid and an E. coli-derived plasmid are disclosed.These shuttle vectors can be advantageously used for gene recombination of cellulose-producing acetic acid bacteria.Type: GrantFiled: December 23, 1994Date of Patent: December 3, 1996Assignee: Bio-Polymer Research Co., Ltd.Inventors: Teruhiko Beppu, Naoto Tonouchi, Sueharu Horinouchi, Takayasu Tsuchida
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Patent number: 5484714Abstract: A method of producing trehalose, in which a microorganism belonging to the genus Brevibacterium, Corynebacterium, Microbacterium or Arthrobacter and having the ability to produce trehalose is incubated in a liquid medium containing sucrose or maltose as an essential carbon source and the trehalose produced and accumulated in the culture is collected therefrom. Trehalose is produced inexpensively and efficiently by industrial mass-production.Type: GrantFiled: December 11, 1992Date of Patent: January 16, 1996Assignee: Ajinomoto Co., Inc.Inventors: Takayasu Tsuchida, Yutaka Murakami, Yoshitaka Nishimoto, Takuya Kotani
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Patent number: 5368981Abstract: A method for increasing .beta.-tyrosinase activity in Erwinia herbicola is disclosed. The activity is increased by culturing the microorganism until it reaches stationary phase and maintaining the stationary phase for a period of 6 to 24 hours while maintaining the pH between 7.0 and 8.3.Type: GrantFiled: January 26, 1994Date of Patent: November 29, 1994Assignee: Ajinomoto Co., Inc.Inventors: Takayasu Tsuchida, Yoshitaka Nishimoto, Takuya Kotani, Katsuo Iizumi
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Patent number: 5338672Abstract: The present invention relates to improved methods for producing L-3, 4-dihydroxyphenylalanine from catechol, pyruvic acid and ammonium ion, or catechol and L-serine, by utilizing .beta.-tyrosinase activity of a microorganism which belongs to the genus Erwinia. According to the method of the present invention, L-3,4-dihydroxyphenylalanine can be produced at a lower cost and higher efficiency as compared with that in the conventional method.Type: GrantFiled: March 24, 1993Date of Patent: August 16, 1994Assignee: Ajinomoto Co., Inc.Inventors: Takayasu Tsuchida, Yoshitaka Nishimoto, Takuya Kotani, Katsuo Iizumi
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Patent number: 5294547Abstract: Culturing an L-amino acid producing microorganism belonging to the genus Brevibacterium or corynebacterium and having a resistance to a dipeptide containing glutamic acid or aspartic acid gives L-amino acids in high yield.Type: GrantFiled: September 6, 1991Date of Patent: March 15, 1994Assignee: Ajinomoto Company, Inc.Inventors: Takayasu Tsuchida, Haruo Uchibori, Hiroshi Takeuchi, Mitsuyoshi Seki
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Patent number: 5284757Abstract: L-arginine is produced in high yields by culturing a microorganism of the genus Brevibacterium or the genus Cornyebacterium, which is resistant to a compound of the formula X-guanidine, wherein X is an aliphatic group or derivative thereof. The preferred microorganisms are Brevibacterium flavum FERM BP-2227 and Corynebacterium glutamicum FERM BP-2228.Type: GrantFiled: April 23, 1993Date of Patent: February 8, 1994Assignee: Ajinomoto Company, Inc.Inventors: Takayasu Tsuchida, Noboro Ohtsuka, Hiroshi Takeuchi, Haruo Uchibori
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Patent number: 5272067Abstract: A process for the production of L-glutamic acid comprising growing microorganisms belonging to the genera Brevibacterium and Corynebacterium that are resisted to prumycin.Type: GrantFiled: February 4, 1992Date of Patent: December 21, 1993Assignee: Ajinomoto Co., Inc.Inventors: Takayasu Tsuchida, Mitsuyoshi Seki, Haruo Uchibori, Hiroki Kawashima, Hitoshi Enei
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Patent number: 5188947Abstract: A process for producing L-ornithine by fermentation which comprises culturing a L-ornithine-producing microorganism is disclosed. The microorganism used belongs to the genus Brevibacterium, Corynebacterium, or Arthrobacter, has auxotrophy for arginine and/or citrulline, and has resistance to microphenolic acid and/or ornithinol.Type: GrantFiled: April 20, 1990Date of Patent: February 23, 1993Assignee: Ajinomoto Co., Inc.Inventors: Takayasu Tsuchida, Haruo Uchibori, Yoshitaka Nishimoto