Patents by Inventor Yoko Yamaguchi

Yoko Yamaguchi 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: 20120196942
    Abstract: A liquid crystal composition contains liquid crystals containing one kind of or two or more kinds of silicone surfactants, a phenyl-modified silicone oil and water. The liquid crystal composition of the present invention contains 5 to 95% by weight in total of one kind of or two or more kinds of silicone surfactants, 0.1 to 90% by weight of a phenyl-modified silicone oil and 0.1 to 90% by weight of water. The liquid crystal composition of the present invention can solubilize hydrophobic compounds having poor solubility (for example, hydrocarbon oils such as squalane, fatty acids such as oleic acid and lipoic acid and ester oils such as cetyl isooctanoate) and is thus useful, for example, as toiletry materials and cosmetic materials.
    Type: Application
    Filed: September 29, 2010
    Publication date: August 2, 2012
    Inventors: Yoko Yamaguchi, Yuji Yamashita, Takeshi Hamasaki
  • Publication number: 20110081418
    Abstract: An object of the present invention is to provide a transdermal absorption enhancer by which various active ingredients are transdermally absorbed. In accordance with a transdermal absorption enhancer of the present invention which effective ingredient is lyotropic liquid crystal which has been utilized as a basic material for pharmaceutical preparations for external application and for cosmetics, transdermal absorption of a macromolecular substance and a water-soluble substance was able to be improved.
    Type: Application
    Filed: September 7, 2010
    Publication date: April 7, 2011
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, NANOEGG RESEARCH LABORATORIES, INC.
    Inventors: Yoko Yamaguchi, Rie Igarashi
  • Publication number: 20110065781
    Abstract: Provision of a stable ?-lipoic acid. A method for producing ?-lipoic acid nanoparticles, the method comprising the steps of: preparing an aqueous dispersion liquid containing ?-lipoic acid and a nonionic surfactant; adding a divalent metal salt into the aqueous dispersion liquid, wherein the divalent metal salt is a divalent metal halide, a divalent metal acetate or a divalent metal gluconate; and adding an alkali metal carbonate or an alkali metal phosphate into the aqueous dispersion liquid which has been added with the divalent metal salt, thereby forming ?-lipoic acid nanoparticles.
    Type: Application
    Filed: December 12, 2008
    Publication date: March 17, 2011
    Applicants: EZAKI GLICO CO., LTD., NANOEGG RESEARCH LABORATORIES, INC.
    Inventors: Kazuhisa Sugimoto, Hiromi Nishiura, Yoko Yamaguchi, Keiichi Hirata, Yoshiki Kubota
  • Publication number: 20100330014
    Abstract: An object of the present invention is to provide a composition for external application on the skin containing hydroquinone as an active ingredient, which has an excellent skin-whitening activity and reduced side effects. The composition for external application on the skin of the present invention as a means for achieving the object is characterized by containing hydroquinone or a derivative thereof compounded with a lyotropic liquid crystal.
    Type: Application
    Filed: January 29, 2009
    Publication date: December 30, 2010
    Applicants: TBC GROUP CO., LTD., NANOEGG RESEARCH LABORATORIES, INC., ST. MARIANNA UNIVERSITY SCHOOL OF MEDICINE
    Inventors: Mina Musashi, Keiichi Hirata, Yoko Yamaguchi
  • Publication number: 20100324271
    Abstract: It is an object of the present invention to provide antibodies which recognize non-reducing mannose residues. The present invention provides antibodies recognizing non-reducing mannose residues, which are obtained through screening of phage-display library of human scFvs by using, as an antigen, Man3-DPPE which is an artificial glycolipid synthesized from mannotriose and dipalmitoylphosphatidylethanolamine by reductive amination.
    Type: Application
    Filed: May 17, 2007
    Publication date: December 23, 2010
    Applicant: TOKAI UNIVERSITY EDUCATIONAL SYSTEM
    Inventors: Yoko Yamaguchi, Munehiro Nakata, Keiko Sakai, Yoshitaka Shimizu, Ayano Takasaki, Tomoki Chiba, Yu Kusada, Nobuyoshi Shimizu, Atsushi Takayanagi
  • Publication number: 20100305215
    Abstract: An object of the present invention is to provide a novel dermal regeneration enhancer. In accordance with the present invention, there is provided a dermal regeneration enhancer as a novel pharmaceutical use of lyotropic liquid crystal which has been utilized as a basic material for pharmaceutical preparations for external application and for cosmetics, and the dermal regeneration enhancer of the present invention achieves an excellent suppressive effect to aging of the skin, generation of spots, etc.
    Type: Application
    Filed: June 18, 2010
    Publication date: December 2, 2010
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, NANOEGG RESEARCH LABORATORIES, INC.
    Inventors: Yoko YAMAGUCHI, Rie IGARASHI
  • Patent number: 7682985
    Abstract: A method for etching a stack with at least one silicon germanium layer over a substrate in a processing chamber is provided. A silicon germanium etch is provided. An etchant gas is provided into the processing chamber, wherein the etchant gas comprises HBr, an inert diluent, and at least one of O2 and N2. The substrate is cooled to a temperature below 40° C. The etching gas is transformed to a plasma to etch the silicon germanium layer.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: March 23, 2010
    Assignee: Lam Research Corporation
    Inventors: C. Robert Koemtzopoulos, Yoko Yamaguchi Adams, Yoshinori Miyamoto, Yousun Kim Taylor
  • Publication number: 20090305104
    Abstract: In a polymer electrolyte fuel cell provided with a fuel cell stack assembled by sandwiching a plurality of stacked single cell modules with a plurality of fastening members through a pair of end plates, the fuel cell including a first elastic member arranged between the fastening member and the end plate and a plurality of second elastic members arranged between the end plate and the end of the fuel cell stack, wherein each of the second elastic members is arranged on the surface of the end plate corresponding to the electrode portion of a membrane electrode assembly in each of the single cell module and each of the first elastic members is arranged on the surface of the end plate corresponding to a seal member arrangement region in which seal member is arranged between the periphery of the membrane electrode assembly and a pair of separator plates in each single cell module.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 10, 2009
    Inventors: Toshihiro Matsumoto, Hiroki Kusakabe, Mitsuo Yoshimura, Yoko Yamaguchi, Yoshiki Nagao
  • Publication number: 20090075860
    Abstract: An object of the present invention is to provide a transdermal absorption enhancer by which various active ingredients are transdermally absorbed. In accordance with a transdermal absorption enhancer of the present invention which effective ingredient is lyotropic liquid crystal which has been utilized as a basic material for pharmaceutical preparations for external application and for cosmetics, transdermal absorption of a macromolecular substance and a water-soluble substance was able to be improved.
    Type: Application
    Filed: April 28, 2006
    Publication date: March 19, 2009
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, NANOEGG RESEARCH LABORATORIES, INC.
    Inventors: Yoko Yamaguchi, Rie Igarashi
  • Patent number: 7491343
    Abstract: A method for etching features in an etch layer is provided. A patterned photoresist mask is provided over the etch layer, the photoresist mask having at least one photoresist line having a pair of sidewalls ending at a line end is provided. A polymer layer is placed over the at least one photoresist line, wherein a thickness of the polymer layer at the line end of the photoresist line is greater than a thickness of the polymer layer on the sidewalls of the photoresist line. Features are etched into the etch layer through the photoresist mask, wherein a line end shortening (LES) ratio is less than or equal to 1.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: February 17, 2009
    Assignee: Lam Research Corporation
    Inventors: Yoko Yamaguchi Adams, Gowri Kota, Frank Y. Lin, Qinghua Zhong
  • Publication number: 20090017123
    Abstract: An object of the present invention is to provide a novel dermal regeneration enhancer. In accordance with the present invention, there is provided a dermal regeneration enhancer as a novel pharmaceutical use of lyotropic liquid crystal which has been utilized as a basic material for pharmaceutical preparations for external application and for cosmetics, and the dermal regeneration enhancer of the present invention achieves an excellent suppressive effect to aging of the skin, generation of spots, etc.
    Type: Application
    Filed: April 28, 2006
    Publication date: January 15, 2009
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, NANOEGG RESEARCH LABORATORIES, INC.
    Inventors: Yoko Yamaguchi, Rie Igarashi
  • Publication number: 20080274193
    Abstract: The present invention aims to provide a novel agent for treating and/or preventing diabetes which agent can not only control a blood sugar level but also fundamentally treat a patient with type I diabetes suffering from destruction of ? cells and a patient with type II diabetes suffering from dysfunction in insulin secretion. The present invention provides an agent for treating and/or preventing diabetes, the agent containing retinoic acid as an active ingredient. Retinoic acid incorporated as an active ingredient may be all-trans retinoic acid, an isomer thereof, a derivative thereof, a salt thereof or a prodrug thereof. Retinoic acid may be incorporated singly. Alternatively, composite particles of retinoic acid and an appropriate inorganic or organic substance are prepared, and the retinoic acid composite particles may be incorporated.
    Type: Application
    Filed: January 21, 2005
    Publication date: November 6, 2008
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Yoko Yamaguchi, Rie Igarashi
  • Patent number: 7361607
    Abstract: A method for etching a multi-layer resist defined over a substrate in a plasma etch chamber is provided. The method initiates with introducing the substrate having a pattern defined on a first layer of the multi-layer resist into the etch chamber. SO2 gas flows into the etch chamber and a plasma is struck in the etch chamber while flowing the SO2 gas. The multi-layer resist is then etched.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: April 22, 2008
    Assignee: Lam Research Corporation
    Inventors: Yoko Yamaguchi, Chris Lee
  • Publication number: 20080038927
    Abstract: A method for etching a multi-layer resist defined over a substrate in a plasma etch chamber is provided. The method initiates with introducing the substrate having a pattern defined on a first layer of the multi-layer resist into the etch chamber. SO2 gas flows into the etch chamber and a plasma is struck in the etch chamber while flowing the SO2 gas. The multi-layer resist is then etched.
    Type: Application
    Filed: November 22, 2006
    Publication date: February 14, 2008
    Inventors: Yoko Yamaguchi, Chris Lee
  • Patent number: 7316785
    Abstract: In a plasma processing system, including a plasma processing chamber, a method of optimizing the etch resistance of a substrate material is described. The method includes flowing pre-coat gas mixture into the plasma processing chamber, wherein the pre-coat gas mixture has an affinity for a etchant gas flow mixture; striking a first plasma from the pre-coat gas mixture; and introducing a substrate comprising the substrate material. The method also includes flowing the etchant gas mixture into the plasma processing chamber; striking a second plasma from the etchant gas mixture; and etching the substrate with the second plasma. Wherein the first plasma creates a pre-coat residual on a set of exposed surfaces in the plasma processing chamber, and the etch resistance of the substrate material is maintained.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: January 8, 2008
    Assignee: Lam Research Corporation
    Inventors: Yoko Yamaguchi Adams, George Stojakovic, Alan Miller
  • Publication number: 20070258926
    Abstract: A composition contains nanoparticles of retinoic acid as an active ingredient. The nanoparticles have reduced irritancy of retinoic acid and are suitable for subcutaneous or intravenous administration, as well as for use in sustained-release preparation. The high skin permeability of the nanoparticles makes the composition suitable for use in pharmaceutical or non-pharmaceutical external preparations or cosmetics intended for skin application. The retinoic acid nanoparticles of the present invention are coated with an inorganic salt of polyvalent metal and can be dissolved in water to make a stable clear solution that can be formulated into injectable preparations for subcutaneous and intravenous administration. The polyvalent metal inorganic salt coating helps reduce the irritancy of retinoic acid, so that the nanoparticles do not cause inflammation or tumor formation at the site of application. The inorganic salt of polyvalent metal may be calcium carbonate, zinc carbonate or calcium phosphate.
    Type: Application
    Filed: October 15, 2003
    Publication date: November 8, 2007
    Applicant: LTT BIO-PHARMA CO., LTD.
    Inventors: Yoko Yamaguchi, Rie Igarashi, Yutaka Mizushima, Mitsuko Takenaga, Natsumi Nakamura
  • Publication number: 20070077286
    Abstract: To provide an external preparation or injectable preparation that exerts the effect of enabling transdermal or transmucosal in viva absorption of fat-soluble drugs and water-soluble drugs not having been satisfactorily attained hitherto and that contains a highly absorbable fat-soluble/water-soluble drug, the injectable preparation especially aiming at sustained-release and target effects. In particular, drug-containing nanoparticles (secondary nanoparticles) are provided by causing primary nanoparticles containing a fat-soluble drug or fat-solubilized water-soluble drug to act with a bivalent or trivalent metal salt. Further, drug-containing nanoparticles (tertiary nanoparticles) are provided by first causing primary nanoparticles containing a fat-soluble drug or fat-solubilized water-soluble drug to act with a bivalent or trivalent metal salt to thereby obtain secondary nanoparticles and thereafter causing a monovalent to trivalent basic salt to act on the secondary nanoparticles.
    Type: Application
    Filed: October 12, 2004
    Publication date: April 5, 2007
    Inventors: Tsutomu Ishihara, Yutaka Mizushima, Jun Suzuki, Junzou Sekine, Yoko Yamaguchi, Rie Igarashi
  • Publication number: 20070014863
    Abstract: Nanoparticles containing retinoic acid have reduced irritancy of retinoic acid and are suitable for subcutaneous or intravenous administration, as well as for use in sustained-release preparation. The high skin permeability of the nanoparticles makes them suitable for use in pharmaceutical or non-pharmaceutical external preparations or cosmetics intended for skin application. The present invention provides a method for adjusting the particle size of such nanoparticles and nanoparticles produced by such a method. Specifically, the method involves dispersing retinoic acid dissolved in a lower alcohol in an aqueous alkali solution; adding a nonionic surfactant to the dispersion to form a mixed micelle; adding to the micelle a halide or acetate of divalent metal along with a carbonate or phosphate of alkali metal so that the molar ratio of the former to the latter is 1:0 to 1:1.
    Type: Application
    Filed: October 15, 2003
    Publication date: January 18, 2007
    Inventors: Yoko Yamaguchi, Rie Igarashi, Yutaka Mizushima, Mitsuko Takenaga
  • Patent number: 6921724
    Abstract: An etch processor for etching a wafer includes a chuck for holding the wafer and a temperature sensor reporting a temperature of the wafer. The chuck includes a heater controlled by a temperature control system. The temperature sensor is operatively coupled to the temperature control system to maintain the temperature of the chuck at a selectable setpoint temperature. A first setpoint temperature and a second setpoint temperature are selected. The wafer is placed on the chuck and set to the first setpoint temperature. The wafer is then processed for a first period of time at the first setpoint temperature and for a second period of time at the second setpoint temperature.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: July 26, 2005
    Assignee: Lam Research Corporation
    Inventors: Tom A. Kamp, Richard Gottscho, Steve Lee, Chris Lee, Yoko Yamaguchi, Vahid Vahedi, Aaron Eppler
  • Publication number: 20040185113
    Abstract: To provide: drug-encapsulating inorganic microparticles in which a method of producing pharmaceutical preparations is simple, which are not stimulative, which are applicable to a great number of potent proteins, potent low-molecular weight compounds and genes, and once applied thereto, enable the potent proteins, potent low-molecular weight compounds and genes to be kept stable, and which give an excellent sustained release effect and a targeting effect to the drugs; a method of manufacturing the same; and pharmaceutical preparations of drug-encapsulating inorganic microparticles.
    Type: Application
    Filed: November 21, 2003
    Publication date: September 23, 2004
    Inventors: Yutaka Mizushima, Yukie Takagi, Megumu Higaki, Rie Igarashi, Yoko Yamaguchi, Michio Kimura