Patents by Inventor Yoshitaka Kokusho

Yoshitaka Kokusho 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).

  • Continuous process for the interesterification of fats or oils
    Patent number: 5190868
    Abstract: Disclosed is a process for the interesterification of oil or fat by treating such oil or fat in presence of a fatty acid or fatty acid ester or different oil or fat wherein a reactor column that is packed with an alkaline high molecular weight lipase preparation containing 0 to 5% moisture is fed with a substrate solution composed of the above oil or fat and fatty acid or fatty acid ester or different oil or fat for a continuous reaction in such a manner that the substrate solution contains 100 to 1800 ppm moisture and 50 to 800 ppm moisture at the inlet and outlet, respectively, of the column.
    Type: Grant
    Filed: January 22, 1991
    Date of Patent: March 2, 1993
    Assignee: Meito Sangyo Co., Ltd.
    Inventors: Yoshitaka Kokusho, Akio Oshima, Akira Tsunoda, Shinjiro Iwasaki
  • Phosphate, liposome comprising the phosphate as membrane constituent, and cosmetic and liposome preparation comprising the liposome
    Patent number: 5153000
    Abstract: A novel monophosphate and a novel diphosphate prepared by a phosphatidyl transfer reaction of a phospholipid and an alcohol in the presence of phospholipase D are disclosed. The phosphates can independently or together form small and stable liposomes which can include active components therein. Cosmetic compositions comprising these phosphates or liposomes penetrate well into the hair and the skin, and exhibit long-lasting excellent moisture-retaining, beauty, skin-activation effects.
    Type: Grant
    Filed: November 16, 1989
    Date of Patent: October 6, 1992
    Assignees: Kao Corporation, Meito Sangyo Co., Ltd.
    Inventors: Yoshiko Chikawa, Katsumi Kita, Mitsuharu Masuda, Tomihiro Kurosaki, Takashi Itoh, Noriko Inoue, Haruya Kato, Takashi Imamura, Yasuo Ishii, Yoshitaka Kokusho, Akira Tsunoda, Shigeaki Kato
  • Production of primary or secondary alcohol derivatives of phospholipids by the enzymatic technique
    Patent number: 4783402
    Abstract: A process for producing a primary or secondary alcohol derivative of a phosopholipid which comprises reacting the phospholipid with a primary or secondary alcohol in the presence of phospholipase DM.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: November 8, 1988
    Assignee: Meito Sangyo Kabushiki Kaisha
    Inventors: Yoshitaka Kokusho, Shigeaki Kato, Haruo Machida
  • Enzymatic production of sphingophospholipid derivatives
    Patent number: 4782019
    Abstract: A process for producing a sphingophospholipid derivative comprising reacting a sphingophospholipid with a specified compound having an alcoholic hydroxyl group selected from the group consisting of specified primary alcohol compounds, specified secondary alcohol compounds and specified saccharides or their phenol glycosides in the presence of phospholipase DM.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: November 1, 1988
    Assignee: Meito Sangyo Kabushiki Kaisha
    Inventors: Yoshitaka Kokusho, Shigeaki Kato, Haruo Machida
  • Enzymatic production of phospholipid-saccharide derivatives
    Patent number: 4624919
    Abstract: A process for producing a saccharide derivative of a phospholipid, which comprises reacting a phospholipid with a monosaccharide having 5 to 7 carbon atoms, at least one primary alcohol group and at least three hydroxyl groups in total including the OH of the primary alcohol group or a disaccharide thereof, said saccharide being optionally substituted by a group selected from the class consisting of amino and acetylamino groups, or a phenol glycoside of said saccharide in the presence of phospholipase DM. The phospholipid-saccharide derivatives are useful as a liposome-forming substrate, or as an emulsifier for cosmetics, such as cream and lotion, fat solutions for transfusion and agricultural chemicals, such as pesticides and herbicides.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: November 25, 1986
    Assignee: Meito Sangyo Kabushiki Kaisha
    Inventors: Yoshitaka Kokusho, Shigeaki Kato, Haruo Machida
  • Microbial lipase, process for its preparation and microbiologically pure culture therefor
    Patent number: 4283494
    Abstract: A microbial lipase which has (i) an optimal pH for activity of about 9.+-.0.5, (ii) an optimal temperature for activity of about 40.degree. C. to about 48.degree. C., (iii) a lipase activity to be activated by bile salts, (iv) a cholesterol esterase activity, and (v) a molecular weight of about 30.times.10.sup.4 to about 40.times.10.sup.4 ; a process for its preparation; and microbiologically pure culture therefor.
    Type: Grant
    Filed: April 26, 1978
    Date of Patent: August 11, 1981
    Assignee: Meito Sangyo Kabushiki Kaisha
    Inventors: Yoshitaka Kokusho, Haruo Machida, Shinjiro Iwasaki
  • Process for improving the quality of microbial rennet
    Patent number: 3950221
    Abstract: A process for improving the quality of microbial rennet by inactivating cellulase impurities in microbial rennet which comprises heat-treating microbial rennet in an aqueous medium in the presence of sodium chloride.
    Type: Grant
    Filed: July 22, 1974
    Date of Patent: April 13, 1976
    Assignee: Meito Sangyo Kabushiki Kaisha
    Inventors: Yoshitaka Kokusho, Susumu Higashi, Haruo Machida, Shinjiro Iwasaki