Patents by Inventor Junko Nakayama

Junko Nakayama 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: 11467118
    Abstract: The present invention provides a method for accurately measuring a blood component despite uneven distribution of blood introduced into a capillary. The measurement method according to the present invention is characterized in that a plurality of electrode systems for measuring the hematocrit are provided in a capillary of a biosensor to measure the hematocrit at different positions in the capillary. By measuring the hematocrit at the plurality of positions in the capillary as described above, the hematocrit can be measured more accurately despite uneven distribution of blood introduced into the capillary.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: October 11, 2022
    Assignee: PHC Holdings Corporation
    Inventors: Masaki Fujiwara, Yoshifumi Takahara, Takaaki Fujii, Junko Nakayama, Setsuko Yano, Fuminori Kutsuna
  • Publication number: 20200371060
    Abstract: The present invention provides a method for accurately measuring a blood component despite uneven distribution of blood introduced into a capillary. The measurement method according to the present invention is characterized in that a plurality of electrode systems for measuring the hematocrit are provided in a capillary of a biosensor to measure the hematocrit at different positions in the capillary. By measuring the hematocrit at the plurality of positions in the capillary as described above, the hematocrit can be measured more accurately despite uneven distribution of blood introduced into the capillary.
    Type: Application
    Filed: August 3, 2018
    Publication date: November 26, 2020
    Inventors: Masaki FUJIWARA, Yoshifumi TAKAHARA, Takaaki FUJII, Junko NAKAYAMA, Setsuko YANO, Fuminori KUTSUNA
  • Patent number: 8673127
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: March 18, 2014
    Assignee: Panasonic Corporation
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Publication number: 20110180404
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Application
    Filed: December 21, 2010
    Publication date: July 28, 2011
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Patent number: 7648617
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: January 19, 2010
    Assignee: Panasonic Corporation
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Publication number: 20100006432
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Application
    Filed: June 12, 2009
    Publication date: January 14, 2010
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Publication number: 20090134023
    Abstract: In a biosensor of the present invention, BSA is contained in a reagent layer including a reagent which reacts specifically with glucose, and the glucose concentration in whole blood as a sample solution is electrochemically measured. When the sensor response characteristics when whole blood is used as the sample solution are measured, the influence by hematocrit to the sensor response characteristics is reduced according to the additive amount of BSA when the hematocrit value is in the range of 25% and below, while no BSA addition effect is recognized in the sensor response characteristics when the hematocrit value is in the range of 25 to 65%. Thereby, the influences by hematocrit and temperature can be reduced, and thus highly precise measurement can be performed.
    Type: Application
    Filed: April 19, 2007
    Publication date: May 28, 2009
    Inventors: Junko Nakayama, Yoshifumi Takahara, Eriko Yamanishi, Yoshihiro Itoh
  • Publication number: 20090065356
    Abstract: In a biosensor for measuring glucose in a liquid sample, an additive agent which is one of an organic acid or organic acid salt having at least one carboxyl group in a molecule, an organic acid or organic acid salt having at least one amino group or carbonyl group in a molecule, a sugar alcohol, and a solubilized protein, or a combination thereof is added into a reagent layer including glucose dehydrogenase having flavin adenine dinucleotide as a coenzyme, which is provided on an insulating substrate. Thereby, the substrate specificity to glucose and the preservation stability can be enhanced, and further, reactions to sugars other than glucose can be avoided.
    Type: Application
    Filed: April 19, 2007
    Publication date: March 12, 2009
    Inventors: Junko Nakayama, Yoshifumi Takahara, Eriko Yamanishi, Yoshihiro Itoh
  • Patent number: 7256666
    Abstract: A band rejection filter with attenuation poles includes a plurality of series resonant circuits having end terminals connected in common and other end terminals connected in series via a plurality of transmission lines each having a length that is an odd multiple of about the one-quarter wavelength at the resonance frequency of the plurality of series resonant circuits, and a jump-coupling circuit for roughly coupling two of the plurality of series resonant circuits, which are not adjacent to each other, to each other.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: August 14, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiromitsu Uchida, Moriyasu Miyazaki, Yoshihiko Imai, Norio Umemura, Junko Nakayama, Hirotaka Kamino
  • Publication number: 20060140890
    Abstract: An oil-based solid cosmetic comprising (A) vitamin A and/or a fatty acid ester thereof, (B) silicic anhydride, (C) an oil-soluble antioxidant, and (D) an oily ingredient existing as paste and/or liquid at room temperature is disclosed. The aforementioned oil-based solid cosmetic, wherein the ingredient (B) is aerosol silicic anhydride, and the aforementioned oil-based solid cosmetic, wherein the ingredient (D) is polybutene and/or heavy liquid isoparaffin are also disclosed.
    Type: Application
    Filed: October 9, 2003
    Publication date: June 29, 2006
    Inventors: Atsushi Miida, Toshiyuki Ito, Junko Nakayama, Soichiro Watanabe, Tsuyoshi Hata
  • Patent number: 7005048
    Abstract: The present invention provides a high-performance glucose sensor having excellent storage stability and an improved response characteristic. This sensor comprises: an electrically insulating base plate; an electrode system including at least a working electrode and a counter electrode formed on the base plate; and a reaction layer containing at least pyrrolo-quinoline quinone dependent glucose dehydrogenase, formed in contact with or in the vicinity of the electrode system, and the reaction layer contains at least one kind of additive selected from the group consisting of gluconic acid and salts thereof.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: February 28, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Motokazu Watanabe, Keiko Yugawa, Toshihiko Yoshioka, Shiro Nankai, Junko Nakayama, Shoji Miyazaki, Hideyuki Baba
  • Publication number: 20050214240
    Abstract: A cosmetic preparation characterized by comprising (a) 0.01 to 10 wt % of a phospholipid, (b) 0.01 to 5 wt % of a nonionic surfactant having an HLB of 10 or higher and/or anionic surfactant, (c) 0.001 to 5 wt % of vitamin A or a derivative thereof, (d) 0.001 to 5 wt % of a stabilizer selected from among metal ion deactivators and antioxidants, and (g) water. The cosmetic preparation has satisfactory long-term stability, well spreads in application, gives excellent use feelings such as a fresh feeling and a nontacky feeling, and has high effects on the skin, such as a wrinkle diminishing effect.
    Type: Application
    Filed: March 13, 2003
    Publication date: September 29, 2005
    Inventors: Toshiyuki Ito, Takashi Isshiki, Junko Nakayama
  • Publication number: 20050194251
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Application
    Filed: April 14, 2005
    Publication date: September 8, 2005
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Patent number: 6911131
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on electrodes, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Grant
    Filed: March 28, 2001
    Date of Patent: June 28, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
  • Publication number: 20040178866
    Abstract: A band rejection filter with poles includes a plurality of series resonant circuits having end terminals connected in common and other end terminals connected in series via a plurality of transmission lines each having a length that is an odd multiple of about the one-quarter wavelength at the resonance frequency of the plurality of series resonant circuits, and a jump-coupling circuit for roughly coupling two of the plurality of series resonant circuits, which are not adjacent to each other, to each other.
    Type: Application
    Filed: February 26, 2004
    Publication date: September 16, 2004
    Inventors: Hiromitsu Uchida, Moriyasu Miyazaki, Yoshihiko Imai, Norio Umemura, Junko Nakayama, Hirotaka Kamino
  • Publication number: 20040137025
    Abstract: A novel water-in-oil emulsion cosmetic composition that comprises (a) an oily ingredient, (b) from 0.3 to 6 mass % of a dipolyhydroxystearic acid polyoxyethylene, (c) from 0.2 to 6 mass % of a particular class of silicone compound and (d) an aqueous ingredient is disclosed.
    Type: Application
    Filed: November 10, 2003
    Publication date: July 15, 2004
    Applicant: KOSE Corporation
    Inventors: Masaki Kosugi, Junko Nakayama
  • Publication number: 20030082220
    Abstract: Cosmetics in which vitamin A or its derivatives are stably formulated, which are excellent in usability due to moderate viscosity and also excellent in feelings upon use such as rich and nourish feeling and aqueous feeling at the time of use and skin effect after use (skin elasticity after use) and have excellent stability with the passage of time. The cosmetic composition contains vitamin A or a derivative thereof, an alkali-soluble polymer emulsion thickener and an oil-soluble antioxidant as essential components. Also, the cosmetic composition wherein the alkali-soluble polymer emulsion thickener is a copolymer of (A) at least one of acrylic acid and methacrylic acid, (B) one or two or more species selected from acrylic acid alkyl esters and methacrylic acid alkyl esters, and (C) an ester of a polyoxyalkylene monoalkyl ether with acrylic acid or an ester of a polyoxyalkylene monoalkyl ether with methacrylic acid.
    Type: Application
    Filed: September 10, 2002
    Publication date: May 1, 2003
    Applicant: KOSE CORPORATION
    Inventor: Junko Nakayama
  • Publication number: 20020179442
    Abstract: In a biosensor for measuring a specific substance in a liquid sample, one or a combination of sugar alcohol, metallic salt, organic acid or organic acid salt which has at least one carboxyl group in a molecule, and organic acid or organic acid salt which has at least one carboxyl group and one amino group in a molecule, is included in a reagent layer provided on an insulating support, thereby providing a highly-accurate biosensor which is excellent in stability and has high response (sensitivity, linearity) of the sensor to the substrate concentration.
    Type: Application
    Filed: May 1, 2002
    Publication date: December 5, 2002
    Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi