Patents by Inventor Yoshiharu Yokoo

Yoshiharu Yokoo 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: 7521079
    Abstract: The present invention relates to a method for producing a liquid plant extract containing plant powder, which includes concentrating a liquid extract containing an active ingredient in the presence of the plant powder, the liquid extract being obtained from a plant containing the active ingredient; a process for producing a plant extract containing plant powder, which is characterized by concentrating and drying a liquid extract containing an active ingredient in the presence of the plant powder.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: April 21, 2009
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yasushi Sakai, Yoshiharu Yokoo
  • Patent number: 7033580
    Abstract: Disclosed is a safe and effective hair-growing agent comprising a protein kinase C-specific inhibitor.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: April 25, 2006
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tomoya Takahashi, Yoshiharu Yokoo, Toshikazu Kamiya, Akio Shirai, Tatsuya Tamaoki
  • Publication number: 20040161524
    Abstract: The present invention relates to a method for producing a liquid plant extract containing plant powder, which comprises concentrating a liquid extract containing an active ingredient in the presence of the plant powder, the liquid extract being obtained from a plant containing the active ingredient; a process for producing a plant extract containing plant powder, which is characterized by comprises concentrating and drying a liquid extract containing an active ingredient in the presence of the plant powder, the liquid extract being obtained from a plant containing the active ingredient; a liquid plant extract or plant extract containing plant powder which comprises a liquid extract or plant extract containing the active ingredient obtained from a plant containing the active ingredient and comprises plant powder, and in which the content of the active ingredient in the liquid extract or plant extract is higher than that in the plant; and a food and drink or feed to which the liquid plant extract or plant extra
    Type: Application
    Filed: December 19, 2003
    Publication date: August 19, 2004
    Inventors: Yasushi Sakai, Yoshiharu Yokoo
  • Publication number: 20030086885
    Abstract: Disclosed is a safe and effective hair-growing agent comprising a protein kinase C-specific inhibitor.
    Type: Application
    Filed: December 4, 2002
    Publication date: May 8, 2003
    Inventors: Tomoya Takahashi, Yoshiharu Yokoo, Toshikazu Kamiya, Akio Shirai, Tatsuya Tamaoki
  • Patent number: 6506370
    Abstract: Disclosed is a safe and effective hair-growing agent comprising a protein kinase C-specific inhibitor.
    Type: Grant
    Filed: March 24, 1997
    Date of Patent: January 14, 2003
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tomoya Takahashi, Yoshiharu Yokoo, Toshikazu Kamiya, Akio Shirai, Tatsuya Tamaoki
  • Patent number: 6214831
    Abstract: The present invention relates to a food and a feed having lipid metabolism improving activity or anti-obesity activity, and a lipid metabolism improving agent or an anti-obesity agent for humans or animals which comprise, as an active ingredient, a compound represented by formula (I): wherein represents (wherein R1 represents hydrogen or hydroxy, and R2 represents hydrogen or lower alkyl; or R1 and R2 are combined together to form a bond) or (wherein R3 represents lower alkyl); n represents 0 when is and represents 1 when is and X− represents an anion, or a salt thereof.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: April 10, 2001
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yoshiharu Yokoo, Yoshinori Kobayashi, Yumiko Nakano
  • Patent number: 6126940
    Abstract: A hair-growing agent comprising proanthocyanidin as the active ingredient. The present invention provides a hair-growing agent having strong pharmaceutical effects.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: October 3, 2000
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tomoya Takahashi, Yoshinori Kobayashi, Michio Kawamura, Yoshiharu Yokoo, Toshikazu Kamiya, Tatsuya Tamaoki
  • Patent number: 6027720
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: February 22, 2000
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5998421
    Abstract: The present invention relates to a food and a feed having lipid metabolism improving activity or anti-obesity activity, and a lipid metabolism improving agent or an anti-obesity agent for humans or animals which comprise, as an active ingredient, a compound represented by formula (I): ##STR1## wherein >A--B-- represents >CR.sup.1 --NR.sup.2 -- (wherein R.sup.1 represents hydrogen or hydroxy, and R.sup.2 represents hydrogen or lower alkyl; or R.sup.1 and R.sup.2 are combined together to form a bond) or >C.dbd.N.sup.+ (R.sup.3)-- (wherein R.sup.3 represents lower alkyl); n represents 0 when >A--B-- is >CR.sup.1 --NR.sup.2 --, and represents 1 when >A--B-- is >C.dbd.N.sup.+ (R.sup.3)--; and X.sup.- represents an anion, or a salt thereof.
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: December 7, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Yoshiharu Yokoo, Yoshinori Kobayashi, Yumiko Nakano
  • Patent number: 5994518
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: November 30, 1999
    Assignee: Kyowa Hakko Co., Ltd
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5876993
    Abstract: The present invention relates to a process for producing a cholesterol-reduced substance obtained by converting cholesterol in a substance to epicholesterol, as well as to a novel cholesterol oxidase and a novel epicholesterol dehydrogenase which are used in the process, a process for production of these enzymes and a method for the production of epicholesterol with the use of the above mentioned epicholesterol dehydrogenase.
    Type: Grant
    Filed: August 23, 1995
    Date of Patent: March 2, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Chiaki Saito, Hideyo Senda, Yoshiharu Yokoo
  • Patent number: 5795968
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: August 18, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5714581
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: February 3, 1998
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5681720
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: October 28, 1997
    Assignee: Kyowa Hakko Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Hajime Yoshida, Yoshinori Komatsu
  • Patent number: 5503988
    Abstract: The present invention relates to a process for producing a cholesterol-reduced substance obtained by converting cholesterol in a substance to epicholesterol, as well as to a novel cholesterol oxidase and a novel epicholesterol dehydrogenase which are used in the process, a process for production of these enzymes and a method for the production of epicholesterol with the use of the above mentioned epicholesterol dehydrogenase.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: April 2, 1996
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Chiaki Saito, Hideyo Senda, Yoshiharu Yokoo
  • Patent number: 5468474
    Abstract: The present invention relates to N-acylglutamine derivatives of formula (I): ##STR1## The N-acylglutamine derivatives are well compatible with oily bases and have good skin-moisturizing activity and hair growth-stimulative effect. These are useful as cosmetics and hair growth stimulants.
    Type: Grant
    Filed: July 27, 1994
    Date of Patent: November 21, 1995
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Shinkichi Honda, Kenji Torii, Yoichiro Arai, Masaji Kasai, Hiromasa Kato, Takao Iida, Tomoya Takahashi, Yoshiharu Yokoo, Toshikazu Kamiya, Tatsuya Tamaoki
  • Patent number: 5432160
    Abstract: A nutrient composition such as infusions and nutrient preparations, which contains .beta.-alanyl-L-glutamine.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: July 11, 1995
    Assignee: Kyowa Hakko Kohyo Co., Ltd.
    Inventors: Takahiro Hara, Yoshiharu Yokoo
  • Patent number: 5376545
    Abstract: The present invention provides a DNA coding for uricase from the genus Cellulomonas and a process for producing uricase using a microorganism which carries a recombinant DNA containing the DNA.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: December 27, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Makoto Yagasaki, Shuichi Ishino, Kazuhisa Iwata, Masaki Azuma, Sadao Teshiba, Masaru Hasegawa, Kazuo Yamaguchi, Keiichi Yano, Yoshiharu Yokoo, Yukio Hashimoto
  • Patent number: 5362853
    Abstract: Novel hG-CSF polypeptide derivatives having an amino acid sequence derived from the amino acid sequence of the human granulocyte colony stimulating factor polypeptide by substitution of at least one amino acid by a different amino acid and/or deletion of at least one amino acid, recombinant plasmids containing a DNA fragment insert coding for any of these hG-CSF polypeptide derivatives, microorganisms carrying one of such plasmids, methods of producing the hG-CSF polypeptide derivatives using the microorganisms, a monoclonal antibody binding to the hG-CSF polypeptide derivative, and chemically modified hG-CSF or derivatives thereof are disclosed.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: November 8, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tetsuro Kuga, Hiromasa Miyaji, Moriyuki Sato, Masami Okabe, Makoto Morimoto, Seiga Itoh, Motoo Yamasaki, Yoshiharu Yokoo, Kazuo Yamaguchi, Yoshinori Komatsu
  • Patent number: 5316767
    Abstract: Disclosed is a whitening cosmetic composition comprising .gamma.-L-glutamyl-L-cystine, .gamma.-L-glutamyl-L-cysteine disulfide, oxidized glutathione or a derivative thereof, the amino group of which is acylated with an alkanoyl group or an aroyl group. The whitening cosmetic composition of the present invention have extremely good in water solubility and heat stability and stability during storage and show a melanin formation inhibitory activity against melanoma cells without any cytotoxicity.
    Type: Grant
    Filed: December 3, 1992
    Date of Patent: May 31, 1994
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Takahiro Hara, Seigo Takasawa, Yoshiharu Yokoo, Tadayasu Furukawa