Patents by Inventor Shin-ichi Ishikawa

Shin-ichi Ishikawa 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).

  • Publication number: 20120291789
    Abstract: A medical composition for protuberance of epithelium, which comprises a solution comprising a polysaccharide or a medically acceptable salt thereof, wherein the solution has a viscosity of: (1) from 50 to 500 mPa·s at a shear rate of from 7.7 to 10.0 s?1; (2) from 45 to 300 mPa·s at a shear rate of from 19.2 to 20.0 s?1; and (3) from 40 to 200 mPa·s at a shear rate of from 38.3 to 40.0 s?1, when measured using a rotational viscometer at 25° C., and a syringe filled with the medical composition.
    Type: Application
    Filed: July 27, 2012
    Publication date: November 22, 2012
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Shin-ichi ISHIKAWA, Junichi ONAYA
  • Patent number: 7816475
    Abstract: An aminoalkoxystyrene represented by the formula (1) wherein R1 and R2 are C1-4 alkyl and n is 3-6. The aminoalkoxystyrene is prepared by reacting an aminoalkoxyphenylmagnesium halide with vinyl halide in the presence of a catalyst. A quaternized amino group-containing polymer made by quaternizing the amino groups of a polymer prepared from the aminoalkoxystyrene is useful as an anion exchanger.
    Type: Grant
    Filed: March 2, 2007
    Date of Patent: October 19, 2010
    Assignee: Tosoh Corporation
    Inventors: Takashi Yamamoto, Shin-ichi Ishikawa, Yasuhiro Oda, Hisao Eguchi
  • Publication number: 20090325899
    Abstract: A medical composition for protuberance of epithelium, which comprises a solution comprising a polysaccharide or a medically acceptable salt thereof, wherein the solution has a viscosity of: (1) from 50 to 500 mPa·s at a shear rate of from 7.7 to 10.0 s?1; (2) from 45 to 300 mPa·s at a shear rate of from 19.2 to 20.0 s?1; and (3) from 40 to 200 mPa·s at a shear rate of from 38.3 to s?1, when measured using a rotational viscometer at 25° C., and a syringe filled with the medical composition.
    Type: Application
    Filed: September 4, 2009
    Publication date: December 31, 2009
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Shin-ichi ISHIKAWA, Junichi ONAYA
  • Publication number: 20070213490
    Abstract: An aminoalkoxystyrene represented by the formula (1) wherein R1 and R2 are C1-4 alkyl and n is 3-6. The aminoalkoxystyrene is prepared by reacting an aminoalkoxyphenylmagnesium halide with vinyl halide in the presence of a catalyst. A quaternized amino group-containing polymer made by quaternizing the amino groups of a polymer prepared from the aminoalkoxystyrene is useful as an anion exchanger.
    Type: Application
    Filed: March 2, 2007
    Publication date: September 13, 2007
    Inventors: Takashi Yamamoto, Shin-ichi Ishikawa, Yasuhiro Oda, Hisao Eguchi
  • Publication number: 20060105991
    Abstract: A medical composition for protuberance of epithelium, which comprises a solution comprising a polysaccharide or a medically acceptable salt thereof, wherein the solution has a viscosity of: (1) from 50 to 500 mPa·s at a shear rate of from 7.7 to 10.0 s?1; (2) from 45 to 300 mPa·s at a shear rate of from 19.2 to 20.0 s?1; and (3) from 40 to 200 mPa·s at a shear rate of from 38.3 to 40.0 s?1, when measured using a rotational viscometer at 25° C., and a syringe filled with the medical composition.
    Type: Application
    Filed: January 4, 2006
    Publication date: May 18, 2006
    Inventors: Shin-ichi Ishikawa, Junichi Onaya
  • Patent number: 7008626
    Abstract: A medical composition for protuberance of epithelium, which comprises a solution comprising a polysaccharide or a medically acceptable salt thereof, wherein the solution has a viscosity of: (1) from 50 to 500 mPa·s at a shear rate of from 7.7 to 10.0 s?1; (2) from 45 to 300 mPa·s at a shear rate of from 19.2 to 20.0 s?1; and (3) from 40 to 200 mPa·s at a shear rate of from 38.3 to 40.0 s?1, when measured using a rotational viscometer at 25° C., and a syringe filled with the medical composition.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: March 7, 2006
    Assignee: Seikagaku Corporation
    Inventors: Shin-ichi Ishikawa, Junichi Onaya
  • Publication number: 20030105061
    Abstract: A medical composition for protuberance of epithelium, which comprises a solution comprising a polysaccharide or a medically acceptable salt thereof, wherein the solution has a viscosity of: (1) from 50 to 500 mPa·s at a shear rate of from 7.7 to 10.0 s−1; (2) from 45 to 300 mPa·s at a shear rate of from 19.2 to 20.0 s−1; and (3) from 40 to 200 mPa·s at a shear rate of from 38.3 to 40.0 s−1, when measured using a rotational viscometer at 25° C., and a syringe filled with the medical composition.
    Type: Application
    Filed: November 4, 2002
    Publication date: June 5, 2003
    Applicant: SEIKAGAKU CORPORATION
    Inventors: Shin-Ichi Ishikawa, Junichi Onaya
  • Patent number: 6479709
    Abstract: A process for the production of a styrene derivative is provided. The process comprises reacting a Grignard reagent prepared from an aromatic halogen compound with a vinyl halide in the presence of a catalyst, wherein the catalyst is at least one member selected from the group consisting of manganese catlyst, iron catalyst, cobalt catalyst and rhodium catalyst.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: November 12, 2002
    Assignee: Tosoh Corporation
    Inventors: Shin-ichi Ishikawa, Hisao Eguchi
  • Patent number: 6472567
    Abstract: A process for the production of a styrene compound is provided. The process comprises reacting a Grignard reagent prepared from a tertiary butoxyphenyl halide with a vinyl halide in the presence of a catalyst, wherein the catalyst is at least one member selected from the group consisting of manganese catalyst, iron catalyst, cobalt catalyst and rhodium catalyst. The process overcomes the problems involved in the prior art, and is economical and safe. The styrene compound by the process is free from biphenyl.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: October 29, 2002
    Assignee: Tosoh Corporation
    Inventors: Shin-ichi Ishikawa, Hisao Eguchi
  • Publication number: 20020026084
    Abstract: A process for the production of a styrene compound is provided. The process comprises reacting a Grignard reagent prepared from a tertiary butoxyphenyl halide with a vinyl halide in the presence of a catalyst, wherein the catalyst is at least one member selected from the group consisting of manganese catalyst, iron catalyst, cobalt catalyst and rhodium catalyst. The process overcomes the problems involved in the prior art, and is economical and safe. The styrene compound by the process is free from biphenyl.
    Type: Application
    Filed: August 8, 2001
    Publication date: February 28, 2002
    Applicant: Tosoh Corporation
    Inventors: Shin-Ichi Ishikawa, Hisao Eguchi
  • Patent number: 6333114
    Abstract: A polyycarbonate resin coextruded article having a thermoplastic aromatic polycarbonate resin core layer and a thermoplastic aromatic polycarbonate resin cover layer which is provided on at least one side of the core layer, wherein the cover layer contains 0.1 to 25 parts by weight of a triazine light stabilizer represented by formula (I) per 100 parts by weight of the thermoplastic aromatic polycarbonate. wherein R1 represents an alkyl group having 1 to 17 carbon atoms; R2 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and n represents an integer of 1 to 20.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: December 25, 2001
    Assignee: Asahi Denka Kogyo Kabushiki Kaisha
    Inventors: Etsuo Tobita, Shin-ichi Ishikawa, Takashi Ayabe, Saeko Kawaragi
  • Patent number: 6007810
    Abstract: This invention provides pharmaceutical compositions containing chondroitinase wherein a decrease in enzyme activity is very little even after long-term storage, and the pharmaceutical compositions are characterized in that they contain chondroitinase and a pharmaceutical carrier, and that an amount of reducing impurities per 1 g of said pharmaceutical carrier is 0.4 mL or less as a titer by a titration method with 0.01 N of ammonium ceric nitrate.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: December 28, 1999
    Assignee: Seikagaku Corporation
    Inventors: Shin-ichi Ishikawa, Mine Higuchi