Patents by Inventor Mitsutoshi Azuma

Mitsutoshi Azuma 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).

  • Method for producing fermented carotenoid using carotenoid-producing bacteria obtained by using cobalt-containing culturing medium
    Patent number: 10947574
    Abstract: 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: Grant
    Filed: December 27, 2016
    Date of Patent: March 16, 2021
    Assignee: ENEOS CORPORATION
    Inventors: Tetsuhisa Yata, Hisashi Yoneda, Mitsutoshi Azuma, Kazuaki Hirasawa
  • METHOD FOR PRODUCING FERMENTED CAROTENOID USING CAROTENOID-PRODUCING BACTERIA OBTAINED BY USING COBALT-CONTAINING CULTURING MEDIUM
    Publication number: 20190112628
    Abstract: 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: Application
    Filed: December 27, 2016
    Publication date: April 18, 2019
    Applicant: JXTG NIPPON OIL & ENERGY CORPORATION
    Inventors: Tetsuhisa YATA, Hisashi YONEDA, Mitsutoshi AZUMA, Kazuaki HIRASAWA
  • Method for producing astaxanthin by fermentation
    Patent number: 10240215
    Abstract: 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: Grant
    Filed: October 14, 2016
    Date of Patent: March 26, 2019
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
  • Method for producing astaxanthin by fermentation
    Patent number: 9605323
    Abstract: 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: Grant
    Filed: March 15, 2011
    Date of Patent: March 28, 2017
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
  • Method for producing zeaxanthin by fermentation
    Patent number: 8883443
    Abstract: 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: Grant
    Filed: March 29, 2011
    Date of Patent: November 11, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma
  • METHOD FOR PRODUCING ZEAXANTHIN BY FERMENTATION
    Publication number: 20130030218
    Abstract: 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: Application
    Filed: March 29, 2011
    Publication date: January 31, 2013
    Applicant: JX Nippon Oil & Energy Corporation
    Inventors: Kazuaki Hirasawa, Hiroshi Satoh, Hisashi Yoneda, Tetsuhisa Yata, Mitsutoshi Azuma