Patents by Inventor Harumi Iwashita

Harumi Iwashita 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).

  • Partially double-stranded oligonucleotide and method for forming oligonucleotide
    Patent number: 5830643
    Abstract: A method for forming an oligonucleotide comprises the steps of synthesizing a pair of oligonucleotides, one oligonucleotide having a base sequence portion comlementary to that of the other at a part of the terminal end region thereof; binding the pair of oligonucleotides at the complementary base sequence portions; and polymerizing nucleic acid bases onto the resulting pair of oligonuceotides. The method may further comprise the step of separating the oligonucleotides thus obtained into single strands.
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: November 3, 1998
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobuko Yamamoto, Kinya Kato, Harumi Iwashita, Masanori Sakuranaga
  • Method for forming proteoliposome and method for forming giant proteoliposome
    Patent number: 5374715
    Abstract: A method for forming a proteoliposome comprises incorporating into a liposome a membrane protein combined with a carrier. Further, a method for preparing a giant proteoliposome, comprises freezing and thawing an alkali metal salt solution containing a membrane protein and a lipid, and subsequently dialyzing against a second salt solution or a buffer solution having a lower osmotic pressure than that of said alkali metal salt solution. Further, a method for forming a proteoliposome, comprises by freezing and thawing an alkali metal salt solution containing a membrane protein combined with a carrier and a lipid.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: December 20, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunehiro Kanno, Junji Ohyama, Masanori Sakuranaga, Hiroyoshi Kishi, Nobuko Yamamoto, Kinya Kato, Harumi Iwashita, Yasuko Tomida
  • Method of forming planar membrane
    Patent number: 5288517
    Abstract: A method of forming a lipid planar membrane of a bilayer membrane composed of lipid and protein comprises the step of immersing a substrate, which has a long-chain hydrocarbon group at least on the surface of one side thereof, in a suspension of liposome or proteoliposome, respectively. The long-chain hydrocarbon group is introduced into the substrate by bonding a long-chain alkylsilane coupling agent or a long-chain alkyltitanate coupling agent.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: February 22, 1994
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunehiro Kanno, Kinya Kato, Harumi Iwashita, Junji Ohyama, Nobuko Yamamoto, Masanori Sakuranaga
  • Method for forming proteoliposome and method for forming giant proteoliposome
    Patent number: 5227470
    Abstract: A method for forming a proteoliposome comprises incorporating into a liposome a membrane protein combined with a carrier. Further, a method for preparing a giant proteoliposome, comprises freezing and thawing an alkali metal salt solution containing a membrane protein and a lipid, and subsequently dialyzing against a second salt solution or a buffer solution having a lower osmotic pressure than that of said alkali metal salt solution. Further, a method for forming a proteoliposome, comprises freezing and thawing an alkali metal salt solution containing a membrane protein combined with a carrier and a lipid.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: July 13, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsunehiro Kanno, Junji Ohyama, Masanori Sakuranaga, Hiroyoshi Kishi, Nobuko Yamamoto, Kinya Kato, Harumi Iwashita, Yasuko Tomida
  • Ion permeable membrane and ion transport method by utilizing said membrane
    Patent number: 5041224
    Abstract: An ion permeable membrane, comprising two or more groups of substances having different sensitive wavelength regions in a lipid membrane, is provided.
    Type: Grant
    Filed: March 28, 1989
    Date of Patent: August 20, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Junji Ohyama, Harumi Iwashita, Kinya Kato, Nobuko Yamamoto, Masanori Sakuranaga, Tsunehiro Kanno, Yasuko Tomida