Patents by Inventor Hisashi Yoneda
Hisashi Yoneda 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: 11933752Abstract: A gas sensor includes: a gas-sensitive body layer disposed above a substrate and including a metal oxide layer; a first electrode on the gas-sensitive body layer; and a second electrode on the gas-sensitive body layer, being apart from the first electrode by a gap. The gas-sensitive body layer has a resistance change characteristic that reversibly transitions to a high-resistance state and a low-resistance state on basis of a voltage applied across the first electrode and the second electrode. At least a part of the gas-sensitive body layer is exposed to the gap. The gas-sensitive body layer has a resistance that decreases when gas containing a hydrogen atom is in contact with the second electrode.Type: GrantFiled: July 23, 2019Date of Patent: March 19, 2024Assignee: NUVOTON TECHNOLOGY CORPORATION JAPANInventors: Satoru Fujii, Zhiqiang Wei, Kazunari Homma, Shinichi Yoneda, Yasuhisa Naito, Hisashi Shima, Hiroyuki Akinaga
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Patent number: 10947574Abstract: The present invention provides a method for high yield and stable production of carotenoids through microbial culture. The present invention provides a method for culture of carotenoid-producing bacteria, which comprises culturing carotenoid-producing bacteria in a medium containing cobalt or a cobalt salt at a concentration of 0.005 ?mol/L to 20 ?mol/L.Type: GrantFiled: December 27, 2016Date of Patent: March 16, 2021Assignee: ENEOS CORPORATIONInventors: Tetsuhisa Yata, Hisashi Yoneda, Mitsutoshi Azuma, Kazuaki Hirasawa
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Publication number: 20190112628Abstract: The present invention provides a method for high yield and stable production of carotenoids through microbial culture. The present invention provides a method for culture of carotenoid-producing bacteria, which comprises culturing carotenoid-producing bacteria in a medium containing cobalt or a cobalt salt at a concentration of 0.005 ?mol/L to 20 ?mol/L.Type: ApplicationFiled: December 27, 2016Publication date: April 18, 2019Applicant: JXTG NIPPON OIL & ENERGY CORPORATIONInventors: Tetsuhisa YATA, Hisashi YONEDA, Mitsutoshi AZUMA, Kazuaki HIRASAWA
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Patent number: 10240215Abstract: An object of the present invention is to provide a method for microbioiogically producing astaxanthin of high concentration at low cost while suppressing production of canthaxanthin. Specifically, the present invention relates to a method for producing carotenoids including astaxanthin comprising culturing a bacterium that concurrently produces astaxanthin and canthaxanthin in a medium containing biotin, wherein a ratio of concentration of produced canthaxanthin to concentration of produced astaxanthin in a culture product after the end of culture in the medium is lower than that in a culture product alter the end of culture in a biotin-free medium.Type: GrantFiled: October 14, 2016Date of Patent: March 26, 2019Assignee: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
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Patent number: 9605323Abstract: An object of the present invention is to provide a method for microbiologically producing astaxanthin of high concentration at low cost while suppressing production of canthaxanthin. Specifically, the present invention relates to a method for producing carotenoids including astaxanthin comprising culturing a bacterium that concurrently produces astaxanthin and canthaxanthin in a medium containing biotin, wherein a ratio of concentration of produced canthaxanthin to concentration of produced astaxanthin in a culture product after the end of culture in the medium is lower than that in a culture product after the end of culture in a biotin-free medium.Type: GrantFiled: March 15, 2011Date of Patent: March 28, 2017Assignee: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
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Publication number: 20170029862Abstract: An object of the present invention is to provide a method for microbioiogically producing astaxanthin of high concentration at low cost while suppressing production of canthaxanthin. Specifically, the present invention relates to a method for producing carotenoids including astaxanthin comprising culturing a bacterium that concurrently produces astaxanthin and canthaxanthin in a medium containing biotin, wherein a ratio of concentration of produced canthaxanthin to concentration of produced astaxanthin in a culture product after the end of culture in the medium is lower than that in a culture product alter the end of culture in a biotin-free medium.Type: ApplicationFiled: October 14, 2016Publication date: February 2, 2017Applicant: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Matsutoshi Azuma
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Patent number: 8999664Abstract: The present invention provides a salmon flesh color improving method and a salmon flesh color improving feed which are usable for producing a salmon having a mild reddish orange flesh color close to the flesh color of wild fish, and a salmon and fish flesh thereof produced by such a flesh color improving method. The present invention also provides a method for producing a salmon having a mild reddish orange flesh color, comprising cultivating the salmon with a feed comprising a carotenoid colorant mixed therein, the carotenoid colorant comprising at least astaxanthin, phoenicoxanthin, canthaxanthin and adonixanthin.Type: GrantFiled: September 14, 2007Date of Patent: April 7, 2015Assignee: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Akira Tsubokura, Hisashi Yoneda
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Patent number: 8883443Abstract: A method for microbiologically producing zeaxanthin at high concentration and low cost while suppressing production of gluconic acid is presented. Specifically, a method for producing carotenoids containing zeaxanthin by culturing a bacterium producing carotenoids containing zeaxanthin in a medium containing biotin is provided.Type: GrantFiled: March 29, 2011Date of Patent: November 11, 2014Assignee: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
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Publication number: 20130030218Abstract: A method for microbiologically producing zeaxanthin at high concentration and low cost while suppressing production of gluconic acid is presented. Specifically, a method for producing carotenoids containing zeaxanthin by culturing a bacterium producing carotenoids containing zeaxanthin in a medium containing biotin is provided.Type: ApplicationFiled: March 29, 2011Publication date: January 31, 2013Applicant: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
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Publication number: 20130012594Abstract: An object of the present invention is to provide a method for microbiologically producing astaxanthin of high concentration at low cost while suppressing production of canthaxanthin. Specifically, the present invention relates to a method for producing carotenoids including astaxanthin comprising culturing a bacterium that concurrently produces astaxanthin and canthaxanthin in a medium containing biotin, wherein a ratio of concentration of produced canthaxanthin to concentration of produced astaxanthin in a culture product after the end of culture in the medium is lower than that in a culture product after the end of culture in a biotin-free medium.Type: ApplicationFiled: March 15, 2011Publication date: January 10, 2013Applicant: JX Nippon Oil & Energy CorporationInventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Matsutoshi Azuma
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Publication number: 20100319077Abstract: The present invention provides a salmon flesh color improving method and a salmon flesh color improving feed which are usable for producing a salmon having a mild reddish orange flesh color close to the flesh color of wild fish, and a salmon and fish flesh thereof produced by such a flesh color improving method. The present invention also provides a method for producing a salmon having a mild reddish orange flesh color, comprising cultivating the salmon with a feed comprising a carotenoid colorant mixed therein, the carotenoid colorant comprising at least astaxanthin, phoenicoxanthin, canthaxanthin and adonixanthin.Type: ApplicationFiled: September 14, 2007Publication date: December 16, 2010Applicant: Nippon Oil CorporationInventors: Kazuaki Hirasawa, Akira Tsubokura, Hisashi Yoneda
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Patent number: 7745170Abstract: The present invention relates to a process for producing zeaxanthin, ?-carotene, or lycopene, comprising inducing mutation in a carotenoid-producing microorganism in which the base sequence of DNA corresponding to 16S ribosomal RNA is substantially homologous to the base sequence described in SEQ ID NO: 1; screening for a mutant strain having a high product proportion of zeaxanthin, ?-carotene, or lycopene to the whole production amount of carotenoids to provide a microorganism producing zeaxanthin, ?-carotene, or lycopene; culturing the mutant microorganism; and harvesting zeaxanthin, ?-carotene, lycopene or a carotenoid mixture containing the same from the resultant culture.Type: GrantFiled: September 8, 2004Date of Patent: June 29, 2010Assignee: Nippon Oil CorporationInventors: Akira Tsubokura, Hisashi Yoneda, Kazuaki Hirasawa
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Publication number: 20070105189Abstract: The present invention relates to a process for producing zeaxanthin, ?-carotene, or lycopene, comprising inducing mutation in a carotenoid-producing microorganism in which the base sequence of DNA corresponding to 16S ribosomal RNA is substantially homologous to the base sequence described in SEQ ID NO: 1; screening for a mutant strain having a high product proportion of zeaxanthin, ?-carotene, or lycopene to the whole production amount of carotenoids to provide a microorganism producing zeaxanthin, ?-carotene, or lycopene; culturing the mutant microorganism; and harvesting zeaxanthin, ?-carotene, lycopene or a carotenoid mixture containing the same from the resultant culture.Type: ApplicationFiled: September 8, 2004Publication date: May 10, 2007Applicant: NIPPON OIL CORPORATIONInventors: Akira Tsubokura, Hisashi Yoneda, Kazuaki Hirasawa
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Patent number: 6706278Abstract: This invention provides a pigment-containing substance for feed additives consisting of a microorganism culture precipitate which contains a high concentration of carotenoid compounds. This pigment-containing substance for feed additives is resistant to oxygen, light and so on, and can be stably conserved for a long time period.Type: GrantFiled: May 23, 2001Date of Patent: March 16, 2004Assignee: Nippon Mitsubishi Oil CorporationInventors: Akira Tsubokura, Hisashi Yoneda, Haruyoshi Mizuta
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Patent number: 5858761Abstract: Bacterium belonging to a new genus, and a process for production of carotenoid pigment selected from the group consisting of astaxanthin, adonixanthin, .beta.-carotene, echinenone, canthaxanthin and zeaxanthin, comprising the steps of culturing a bacterium capable of producing at least one of the carotenoid pigments, and recovering an individual carotenoid pigments.The producer bacterium belongs to new genus.According to the present process various carotenoids can be produced in an industrial scale. By the present process (3S, 3'S)-astaxanthin can be produced in an almost 100% purity.Type: GrantFiled: September 19, 1996Date of Patent: January 12, 1999Assignee: Nippon Oil Company, Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Mikihiro Takaki, Takashi Kiyota
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Patent number: 5607839Abstract: Bacterium belonging to a new genus, and a process for production of carotenoid pigment selected from the group consisting of astaxanthin, adonixanthin, .beta.-carotene, echinenone, canthaxanthin and zeaxanthin, comprising the steps of culturing a bacterium capable of producing at least one of the carotenoid pigments, and recovering an individual carotenoid pigments.The producer bacterium belongs to new genus.According to the present process various carotenoids can be produced in an industrial scale. By the present process (3S, 3'S)-astaxanthin can be produced in an almost 100% purity.Type: GrantFiled: July 19, 1994Date of Patent: March 4, 1997Assignee: Nippon Oil Company, Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Mikihiro Takaki, Takashi Kiyota
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Patent number: 5565357Abstract: A process for production of canthaxanthin comprising the steps of culturing a microorganism capable of producing canthaxanthin and belonging to the genus Corynebacterium, such as Corynebacterium sp. SQH 348 (FERM BP-4284), and recovering canthaxanthin from the culture.Type: GrantFiled: May 24, 1995Date of Patent: October 15, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Mikihiro Takaki, Takashi Kiyota
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Patent number: 5496709Abstract: A process for production of canthaxanthin comprising the steps of culturing a microorganism capable of producing canthaxanthin and belonging to the genus Corynebacterium, such as Corynebacterium sp. SQH 348 (FERM BP-4284), and recovering canthaxanthin from the culture.Type: GrantFiled: June 10, 1994Date of Patent: March 5, 1996Assignee: Nippon Oil Co., Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Mikihiro Takai, Takashi Kiyota
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Patent number: 5229281Abstract: A process for the production of an optically active 3-methyladipic acid represented by the formula (I): ##STR1## wherein the symbol * represents an asymmetric carbon atom, comprising the steps of culturing a microorganism belonging to the genus Candida and capable of producing the optically active 3-methyladipic acid in a medium containing squalene, to produce an optically active 3-methyladipic acid; and recovering the optically active 3-methyladipic acid from the cultured product.Type: GrantFiled: October 10, 1991Date of Patent: July 20, 1993Assignee: Nippon Oil Co., Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Takashi Kiyota
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Patent number: 5217887Abstract: A process for the production of methylsuccinic acid represented by the formula (I): ##STR1## wherein the symbol * represents an asymmetric carbon atom, comprising the steps of culturing Candida in a medium containing squalene and producing methylsuccinic acid.Type: GrantFiled: October 10, 1991Date of Patent: June 8, 1993Assignee: Nippon Oil Co., Ltd.Inventors: Akira Tsubokura, Hisashi Yoneda, Takashi Kiyota