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).
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Patent number: 11467118Abstract: 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: GrantFiled: August 3, 2018Date of Patent: October 11, 2022Assignee: PHC Holdings CorporationInventors: Masaki Fujiwara, Yoshifumi Takahara, Takaaki Fujii, Junko Nakayama, Setsuko Yano, Fuminori Kutsuna
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Publication number: 20200371060Abstract: 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: ApplicationFiled: August 3, 2018Publication date: November 26, 2020Inventors: Masaki FUJIWARA, Yoshifumi TAKAHARA, Takaaki FUJII, Junko NAKAYAMA, Setsuko YANO, Fuminori KUTSUNA
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Patent number: 8673127Abstract: 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: GrantFiled: December 21, 2010Date of Patent: March 18, 2014Assignee: Panasonic CorporationInventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
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Publication number: 20110180404Abstract: 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: ApplicationFiled: December 21, 2010Publication date: July 28, 2011Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
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Patent number: 7648617Abstract: 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: GrantFiled: April 14, 2005Date of Patent: January 19, 2010Assignee: Panasonic CorporationInventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
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Publication number: 20100006432Abstract: 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: ApplicationFiled: June 12, 2009Publication date: January 14, 2010Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
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Publication number: 20090134023Abstract: 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: ApplicationFiled: April 19, 2007Publication date: May 28, 2009Inventors: Junko Nakayama, Yoshifumi Takahara, Eriko Yamanishi, Yoshihiro Itoh
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Publication number: 20090065356Abstract: 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: ApplicationFiled: April 19, 2007Publication date: March 12, 2009Inventors: Junko Nakayama, Yoshifumi Takahara, Eriko Yamanishi, Yoshihiro Itoh
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Patent number: 7256666Abstract: 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: GrantFiled: February 26, 2004Date of Patent: August 14, 2007Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiromitsu Uchida, Moriyasu Miyazaki, Yoshihiko Imai, Norio Umemura, Junko Nakayama, Hirotaka Kamino
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Publication number: 20060140890Abstract: 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: ApplicationFiled: October 9, 2003Publication date: June 29, 2006Inventors: Atsushi Miida, Toshiyuki Ito, Junko Nakayama, Soichiro Watanabe, Tsuyoshi Hata
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Patent number: 7005048Abstract: 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: GrantFiled: October 2, 2000Date of Patent: February 28, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Motokazu Watanabe, Keiko Yugawa, Toshihiko Yoshioka, Shiro Nankai, Junko Nakayama, Shoji Miyazaki, Hideyuki Baba
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Publication number: 20050214240Abstract: 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: ApplicationFiled: March 13, 2003Publication date: September 29, 2005Inventors: Toshiyuki Ito, Takashi Isshiki, Junko Nakayama
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Publication number: 20050194251Abstract: 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: ApplicationFiled: April 14, 2005Publication date: September 8, 2005Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
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Patent number: 6911131Abstract: 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: GrantFiled: March 28, 2001Date of Patent: June 28, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi
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Publication number: 20040178866Abstract: 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: ApplicationFiled: February 26, 2004Publication date: September 16, 2004Inventors: Hiromitsu Uchida, Moriyasu Miyazaki, Yoshihiko Imai, Norio Umemura, Junko Nakayama, Hirotaka Kamino
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Publication number: 20040137025Abstract: 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: ApplicationFiled: November 10, 2003Publication date: July 15, 2004Applicant: KOSE CorporationInventors: Masaki Kosugi, Junko Nakayama
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Publication number: 20030082220Abstract: 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: ApplicationFiled: September 10, 2002Publication date: May 1, 2003Applicant: KOSE CORPORATIONInventor: Junko Nakayama
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Publication number: 20020179442Abstract: 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: ApplicationFiled: May 1, 2002Publication date: December 5, 2002Inventors: Shoji Miyazaki, Hiroyuki Tokunaga, Masaki Fujiwara, Takahiro Nakaminami, Junko Nakayama, Eriko Yamanishi