Patents by Inventor Yasushi Kasahara
Yasushi Kasahara 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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Publication number: 20240054300Abstract: A foreign matter detection device which detects a foreign matter in an inside of a card reader. The foreign matter detection device includes a control part which performs control for causing an imaging device provided in the inside of the card reader to image a space in the inside of the card reader, and a detection part which detects the foreign matter in the space by image analysis based on a captured image obtained by the imaging device.Type: ApplicationFiled: August 4, 2023Publication date: February 15, 2024Applicant: NIDEC INSTRUMENTS CORPORATIONInventors: Hiroshige TAKEDA, Takeshi SEGAWA, Yasushi KASAHARA, Takahiro MATSUZAWA
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Patent number: 8662382Abstract: A non-contact storage medium fixing structure includes a non-contact storage medium that has a memory unit which stores predetermined information of an object to be controlled, a pair of wire connection guide members respectively provided at at least two positions on a body of the non-contact storage medium, and a wire connection member that fixes the non-contact storage medium at a predetermined position of the object to be controlled, by way of the pair of wire connection guide members.Type: GrantFiled: October 29, 2008Date of Patent: March 4, 2014Assignees: Fujitsu Limited, Fujitsu Frontech LimitedInventors: Shunji Baba, Shigeru Hashimoto, Yasushi Kasahara
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Publication number: 20090199448Abstract: A non-contact storage medium fixing structure includes a non-contact storage medium that has a memory unit which stores predetermined information of an object to be controlled, a pair of wire connection guide members respectively provided at at least two positions on a body of the non-contact storage medium, and a wire connection member that fixes the non-contact storage medium at a predetermined position of the object to be controlled, by way of the pair of wire connection guide members.Type: ApplicationFiled: October 29, 2008Publication date: August 13, 2009Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITEDInventors: Shunji BABA, Shigeru HASHIMOTO, Yasushi KASAHARA
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Patent number: 4757001Abstract: The present invention relates to the method of measuring a biological ligand (1) in a sample containing an amylase (1) derived from a higher animal. This method is characterized by employing a combination of an amylase (2) not contained in the sample and an antibody against the ligand (1) or a ligand (2) capable of reacting with the antibody and an amylase inhibitor of which inhibitory activity against the amylase (1) is stronger than that against the amylase (2). The method of the invention utilizes the emphasis of steric hindrance of the amylase (2) reaction which is carried out at the boundary between solid phase and liquid phase and the specific removal of the influence of the amylase (1) by using the above amylase inhibitor. This method is suitable as a clinical test for the determination of physiological substances and trace components in a humoral fluid such as serum.Type: GrantFiled: February 8, 1985Date of Patent: July 12, 1988Assignee: Fujirebio Kabushiki KaishaInventors: Yoshihiro Ashihara, Yasushi Kasahara
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Patent number: 4692404Abstract: A method is provided which is highly sensitive and specific, and is suitable as a clinical test for the determination of physiological substances and trace components in humoral fluid. The method employs a conjugate of an enzyme capable of acting on a water-insoluble macromolecular substance and an antibody against the ligand (1) to be measured or a ligand (2) having an antigenic determinant common to one of the antigenic determinant(s) of the ligand (1). In the method of the invention, steric hindrance of the conjugate is emphasized by the enzyme reaction which is carried out at the boundary between solid phase and liquid phase.Type: GrantFiled: November 13, 1984Date of Patent: September 8, 1987Assignee: Fujirebio Kabushiki KaishaInventors: Yoshihiro Ashihara, Yasushi Kasahara
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Patent number: 4649105Abstract: A method of measuring a biological ligand comprises allowing to coexist a biologically active composition comprising an immobilization phase of a particular antibody or a particular ligand and an immobilization phase of a biotinyl enzyme or a biotinyl enzyme inhibitor, a water-soluble conjugate of the ligand or the antibody and the biotinyl enzyme inhibitor or the biotinyl enzyme, and the ligand to be measured in an aqueous solution, and measuring the remaining biotinyl enzyme activity or the biotinyl enzyme inhibitory activity. This method is highly sensitive and specific, and it is suitable as a clinical test for the determination of physiological substances and trace components in humoral fluid.Type: GrantFiled: April 24, 1984Date of Patent: March 10, 1987Assignee: Fujirebio Kabushiki KaishaInventors: Yasushi Kasahara, Yoshihiro Ashihara, Hiromasa Suzuki
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Patent number: 4634763Abstract: A novel amylase inhibitor, obtained from hard wheat and durum wheat by using dye ligand affinity chromatography having an inhibitory activity on human salivary amylase of less than 0.1 of the inhibitory activity on human pancreatic amylase is disclosed which is useful for measuring isoenzymes of amylase in the field of clinical tests.Type: GrantFiled: September 30, 1982Date of Patent: January 6, 1987Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Masami Sugiyama, Yasushi Kasahara
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Patent number: 4621048Abstract: The invention relates to a method and novel reagents for detecting a ligand in a biological sample. In the method, the sample is combined with (i) an enzyme or an enzyme bound to a first macromolecular compound, (ii) substrate for the enzyme, and (iii) an antibody complex comprising anti-ligand bound to anti-enzyme and a second macromolecular compound bound to either one or both of the anti-ligand and anti-enzyme. The activity of the enzyme varies as a function of the unknown amount of ligand contained in the biological sample.Type: GrantFiled: March 12, 1984Date of Patent: November 4, 1986Assignee: Fujirebio Kabushiki KaishaInventors: Yoshihiro Ashihara, Hiromasa Suzuki, Yasushi Kasahara
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Patent number: 4582792Abstract: A biologically active composition comprising an immobilized phase comprising an antigen or an antibody, and an immobilized phase comprising an enzyme, an enzyme inhibitor or activator, and a method of measuring antigen or antibody using the same. According to the method of the invention, antigen with antibody can be detected in a simple procedure and high sensitivity.Type: GrantFiled: May 5, 1983Date of Patent: April 15, 1986Assignee: Fujirebio Kabushiki KaishaInventors: Yasushi Kasahara, Hiromasa Suzuki, Yoshihiro Ashihara
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Patent number: 4551272Abstract: Derivatives of dipeptide having the following general formula and their use as substrates for colorimetrically or spectrophotometrically measuring the activity of carboxypeptidase A: ##STR1## wherein X is OH in ortho or para position, or NH.sub.2 or CH.sub.Type: GrantFiled: January 6, 1984Date of Patent: November 5, 1985Assignee: Fujirebio Kabushiki KaishaInventors: Masami Sugiyama, Hiroko Shibuya, Yasushi Kasahara
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Patent number: 4544640Abstract: An antibody is obtained by using as an antigen a complex of an antigen and the F(ab').sub.2 fragment of the human antibody of this antigen or an aggregate of the F(ab').sub.2 fragment of human immunoglobulin. This antibody reacts with an immune complex in a blood serum of a patient of systemic lupus erythematosus and with an immune complex in a blood serum of a patient of rheumatoid arthritis, and it does not react with an aggregated IgG. The amount of immune complex in a blood serum is easily and exactly determined by using this antibody.Type: GrantFiled: April 7, 1983Date of Patent: October 1, 1985Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Kazunori Soma, Yasushi Kasahara
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Patent number: 4432896Abstract: Derivatives of hippuryl-L-phenylalanine having the following general formula: ##STR1## wherein X represents OH or CH.sub.3 O useful as substrates for measuring the actively of carboxy peptidose A.Type: GrantFiled: September 24, 1982Date of Patent: February 21, 1984Assignee: Fujirebio Kabushiki KaishaInventors: Masami Sugiyama, Yasushi Kasahara, Yoshihiro Ashihara
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Patent number: 4419445Abstract: A method for determining the activity of cholinesterase comprising the steps of:mixing a solution containing p-methoxybenzoate demethylmonooxygenase, nicotinamide adenine dinucleotide reduced form (NADH) and p-methoxybenzoyl choline cation having the following formula: ##STR1## with a liquid containing cholinesterase, measuring the decrease in absorbance of light by NADH, which is based on a consumption of NADH, and calculating the activity of cholinesterase therefrom.Type: GrantFiled: March 22, 1982Date of Patent: December 6, 1983Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Yasushi Kasahara, Yoshihiro Ashihara, Masami Sugiyama, Takahiro Harada
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Patent number: 4407944Abstract: A method for determining the activity of an angiotensin-converting enzyme is disclosed comprising the steps of mixing a liquid containing (i) a synthetic substrate X-hippuryl-L-dipeptide having the formula ##STR1## wherein X represents OH, NH.sub.2 or N(CH.sub.3).sub.2, and when R.sub.1 is H, R.sub.2 is H, and when R.sub.1 is ##STR2## R.sub.2 is CH.sub.2 CH(CH.sub.3).sub.2, (ii) hippuricase and (iii) 4-aminoantipyrine, with a liquid containing an angiotensin-converting enzyme; measuring colorimetrically the concentration of the quinonimine dye which is formed by adding an oxiding agent to the above mixture; and calculating the activity of the angiotensin-converting enzyme from the concentration of the quinonimine dye.Type: GrantFiled: December 14, 1981Date of Patent: October 4, 1983Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Yasushi Kasahara, Yoshihiro Ashihara
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Patent number: 4393134Abstract: A standard blood filter paper for use in diagnosis of histidinemia, comprising a piece of filter paper, and a blood material infiltrated in the above filter paper containing a known concentration of histidine and at least one salt selected from the group consisting of a dithionite, a disulfite and a bisulfite. The standard blood filter paper can be preserved for a long term at -20.degree. C.Type: GrantFiled: September 27, 1982Date of Patent: July 12, 1983Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Akira Yano, Yoshitada Saito, Yasushi Kasahara
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Patent number: 4367286Abstract: A reference blood filter paper for measuring the concentration of methionine in the blood, comprising a piece of blood filter paper, a blood material infiltered in the blood filter paper containing a known concentration of methionine and at least one water-soluble, sulfur-containing antioxidant represented by general formula: ##STR1## where n=1 or 2.Type: GrantFiled: September 10, 1981Date of Patent: January 4, 1983Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Yoshitada Saito, Akira Yano, Yasushi Kasahara
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Patent number: 4292404Abstract: Method for determining the activity of the angiotensin-converting enzyme comprising the steps of:(1) mixing a liquid containing the angiotensin-converting enzyme with a reagent consisting essentially of X-hippuryl-L-histidyl-L-leucine, hippuricase, peroxidase, 4-aminoantipyrine and H.sub.2 O.sub.2, and(2) colorimetrically measuring the concentration of quinonimine dye produced in step (1).Type: GrantFiled: September 11, 1980Date of Patent: September 29, 1981Assignee: Fujizoki Pharmaceutical Co., Ltd.Inventors: Yasushi Kasahara, Yoshihiro Ashihara
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Patent number: 4084981Abstract: A quick hardening cement-asphalt composition used as a grout for a ballast-filled track structure comprising(a) 100 parts by weight of a cement composition prepared by adding to portland cement about 10 to 50% by weight of a mixture of a calcium aluminate-series mineral and calcium sulfate in a weight ratio of about 1:0.3 to 1:3; about 0.05 to 10% by weight of an inorganic salt, and about 0.05 to 3% by weight of at least one of an organic carboxylic acid, an organic hydroxycarboxylic acid and a salt thereof, and(b) about 30 to 400 parts by weight of an asphalt emulsion containing about 0.2 to 8% by weight of a polyoxyethylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, sorbitan alkyl ester, polyoxyethylene sorbitan alkyl ester or sucrose fatty acid ester nonionic emulsifier and about 0.05 to 2% by weight of a multivalent metal chloride, calculated as the multivalent metal ion.Type: GrantFiled: October 4, 1974Date of Patent: April 18, 1978Assignees: Japanese National Railways, Denki Kagaku Kogyo Kabushiki Kaisha, Toa Doro Kogyo Co., Ltd.Inventors: Yoshiro Higuchi, Yutaka Harada, Toshio Sato, Koji Nakagawa, Iwazo Kawaguchi, Yasushi Kasahara