Patents by Inventor Toru Fuwa

Toru Fuwa 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: 5382567
    Abstract: Aromatic compositions which comprise perfumes included in cyclodextrins whose inclusion ability depends on a pH of a solution containing the perfumes and cyclodextrins and pH-adjusting substances whereby a release rate of the perfume can be controlled, are described. Aromatic compositions are also disclosed, which comprise perfumes coated or covered with materials whose solubility depends on the pH of a solution containing the coated perfumes, and a pH-adjusting substance to change the pH as desired. Methods for controlling the release rate of the perfumes are also described.
    Type: Grant
    Filed: April 27, 1993
    Date of Patent: January 17, 1995
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Toru Fuwa, Kaneto Uekama
  • Patent number: 5238915
    Abstract: Aromatic compositions which comprise perfumes included in cyclodextrins whose inclusion ability depends on a pH of a solution containing the perfumes and cyclodextrins and pH-adjusting substances whereby a release rate of the perfume can be controlled, are described. Aromatic compositions are also disclosed, which comprise perfumes coated or covered with materials whose solubility depends on the pH of a solution containing the coated perfumes, and a pH-adjusting substance to change the pH as desired. Methods for controlling the release rate of the perfumes are also described.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: August 24, 1993
    Assignee: Wakunaga Seiyaku K.K.
    Inventors: Toru Fuwa, Kaneto Uekama
  • Patent number: 4849336
    Abstract: Biotin- or 2,4-dinitrophenyl-oligodeoxyribonucleotide derivative represented by the formula shown below and its preparation method is disclosed: ##STR1## wherein: R is ##STR2## m and n are each 0 or a natural number; R.sup.1 is a straight or branched hydrocarbon residue; and B is a base constituting the nucleotide (in which when a plural number of B exist, they may be either identical or different). This compound is useful for use as a nonradioactive affinity probe for nucleic acid or a primer.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: July 18, 1989
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Kenichi Miyoshi, Masanori Suzuki, Toru Fuwa
  • Patent number: 4820812
    Abstract: An oligonucleotide derivative having an amino group protected with an eliminatable group bonded through a phosphate group and a spacer with an appropriate length to the 5'-end of an oligonucleotide protected suitably at the 3'-hydroxyl group and the base moiety of the nucleotide, and an immobilized oligonucleotide derivative having a Sepharose carrier bonded to the amino group in place of said protective group are disclosed. Methods for production of these derivatives are also disclosed.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: April 11, 1989
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Kenichi Miyoshi, Toru Fuwa
  • Patent number: 4789737
    Abstract: An oligonucleotide derivative having an amino group protected with an eliminatable group bonded through a phosphate group and a spacer with an appropriate length to the 5'-end of an oligonucleotide protected suitably at the 3'-hydroxyl group and the base moiety of the nucleotide, and an immobilized oligonucleotide derivative having a Sepharose carrier bonded to the amino group in place of said protective group are disclosed. Methods for production of these derivatives are also disclosed.
    Type: Grant
    Filed: February 20, 1987
    Date of Patent: December 6, 1988
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Kenichi Miyoshi, Toru Fuwa
  • Patent number: 4667025
    Abstract: An oligonucleotide derivative having an amino group protected with an eliminatable group bonded through a phosphate group and a spacer with an appropriate length to the 5'-end of an oligonucleotide protected suitably at the 3'-hydroxyl group and the base moiety of the nucleotide, and an immobilized oligonucleotide derivative having a Sepharose carrier bonded to the amino group in place of said protective group are disclosed. Methods for production of these derivatives are also disclosed.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: May 19, 1987
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Kenichi Miyoshi, Toru Fuwa
  • Patent number: 4605735
    Abstract: Biotin- or 2,4-dinitrophenyl-oligodeoxyribonucleotide derivatve represented by the formula shown below and its preparation method is disclosed: ##STR1## wherein: R is ##STR2## m and n are each 0 or a natural number; R.sup.1 is a straight or branched hydrocarbon residue; and B is a base constituting the nucleotide (in which when a plural number of B exist, they may be either identical or different). This compound is useful for use as a nonradioactive affinity probe for nucleic acid or a primer.
    Type: Grant
    Filed: February 9, 1984
    Date of Patent: August 12, 1986
    Assignee: Wakunaga Seiyaku Kabushiki Kaisha
    Inventors: Kenichi Miyoshi, Masanori Suzuki, Toru Fuwa