Patents by Inventor Katsuaki Takahashi

Katsuaki Takahashi 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: 7459123
    Abstract: An automatic analyzer which can remove air bubbles in a photometric light path within a reaction tank and can provide accurate measurement results with stability. The automatic analyzer comprises a reaction cell for mixing a sample and a reagent therein, a constant temperature bath for holding water in which the reaction cell is immersed, a suction pipe for sucking the water in the constant temperature bath, a return pipe for returning the water to the constant temperature bath, a pump disposed between the suction pipe and the return pipe and circulating the water, a heater for heating the water circulated in the constant temperature bath by the pump, and an air-bubble removing unit disposed between the suction pipe and the return pipe, having a water-tight structure to hold the constant temperature bath water therein, and removing air bubbles based on a difference in gravity between the water and the air bubbles.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: December 2, 2008
    Assignees: Hitachi High-Technologies Corporation, Hitachi Science Systems, Inc.
    Inventors: Tetsuya Isobe, Katsuaki Takahashi, Masaharu Nishida
  • Publication number: 20080286657
    Abstract: A non-aqueous electrolyte secondary battery is composed of a positive electrode containing a positive electrode active material capable of storing and releasing lithium ion, a negative electrode containing a negative electrode active material capable of storing and releasing lithium ion, and a non-aqueous electrolyte. The negative electrode active material contains a first material of a graphite material and a second material of a complex in which graphite material and silicon or silicon composite are coated with amorphous carbon material, and a cyclic carbonic acid ester derivative having fluoride atom and a sulfur-containing composite having cyclic structure are added to the non-aqueous electrolyte.
    Type: Application
    Filed: May 15, 2008
    Publication date: November 20, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Kazuhiro HASEGAWA, Akihiro SUZUKI, Hiroyuki FUJIMOTO, Katsuaki TAKAHASHI
  • Publication number: 20080233485
    Abstract: A non-aqueous electrolyte secondary battery comprises: a positive electrode using a positive electrode active material consisting of metal composite oxide containing lithium having a laminated structure; a negative electrode; and a non-aqueous electrolyte dissolving an electrolyte in a non-aqueous solvent; wherein the positive electrode active material contains 50 mol % or more of nickel in metal excluding lithium, and cyclic ether is added in the range of 0.1 volume % to 2.0 volume % to the non-aqueous electrolyte.
    Type: Application
    Filed: March 24, 2008
    Publication date: September 25, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Daizo JITO, Katsuaki TAKAHASHI, Kazuhiro HASEGAWA, Hiroyuki FUJIMOTO, Ikuro NAKANE
  • Publication number: 20080206097
    Abstract: An automatic analyzer which can perform automatic re-measurement, can release a sample for transfer to another unit, can easily perform pre-dilution of the sample, and is adaptable for a reduction in amount of the sample. The automatic analyzer comprises a reaction disk holding a plurality of reaction cells arranged in a row along the circumference of the reaction disk, and a sample dispensing mechanism for dispensing samples into the reaction cells on the reaction disk. The sample dispensing mechanism comprises a dispensing nozzle for dispensing the samples and a support mechanism for supporting the dispensing nozzle, and the support mechanism is disposed inside the circumference of the reaction disk along which the reaction cells are arranged in a row.
    Type: Application
    Filed: May 5, 2008
    Publication date: August 28, 2008
    Inventors: Katsuaki TAKAHASHI, Masaharu NISHIDA
  • Patent number: 7364698
    Abstract: Without causing an increase in size and complication of an automatic analyzer, the efficiency of washing cuvettes can be increased and the amount of detergent used can be more effectively saved in comparison with known analyzers. In an automatic analyzer in which a sample and a reagent are dispensed into each of a plurality of cuvettes, a resulting reaction solution is mixed under stirring, and reaction states of the mixed reaction solution are measured successively. The automatic analyzer includes a unit for stirring a detergent in the cuvette when the interior of the cuvette is washed with the detergent after measurement of a reaction. The automatic analyzer also includes a control device controlling steps of reaction measurement and washing and incorporating a sequence of stirring in the washing step. A mixing unit for mixing the reaction solution also serves as the unit for stirring the detergent in the cuvette.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: April 29, 2008
    Assignees: Hitachi High-Technologies Corporation, Hitachi Science Systems, Ltd.
    Inventors: Takehiro Fujita, Katsuaki Takahashi, Masaharu Nishida
  • Patent number: 7360984
    Abstract: An automatic analyzer, comprising disposable parts such as large quantities of nozzle tips and reaction containers for use in sample analysis inspection, wherein the part rack (12) holding unused parts is raised from a lowest position to a rack separation station (A) by a lift for supply (14) and separated so that only the uppermost stacked part rack can remain on the rack separation station, the separated part rack is moved to a part take-out station (B) where parts on the part rack are taken out one by one from a movable holding part (59), and, by opening the floor part of the part take-out station (B) after part consumption, the used part rack is allowed to fall down and recovered on the lift (84) of a recovery lifter (15), whereby the supply of an unused part rack on which unused parts are loaded and the recovery of a used part rack can be performed with a compact system configuration.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: April 22, 2008
    Assignee: Roche Diagnostics Corp.
    Inventors: Hidetoshi Sugiyama, Katsuaki Takahashi, Hideyuki Yanami, Stephan Sattler
  • Publication number: 20080079208
    Abstract: An inner member having a supply port is installed at the inside of a housing, wherein the housing and the inner member are connected together by connecting bolts. Air is supplied to the supply port of the inner member and is directed and introduced through communication passages into an annular passage. Thereafter, the air is directed outwardly from a plurality of lead-out holes, which communicate with the annular passage, in a swirling direction with respect to an annular recess facing the workpiece. In addition, by having the air flow along the annular recess, which is formed with a substantially trapezoidal shape in cross section, the workpiece is maintained in a non-contact state with respect to a holding surface of the inner member.
    Type: Application
    Filed: October 1, 2007
    Publication date: April 3, 2008
    Applicant: SMC Kabushiki Kaisha
    Inventors: Seikai Yo, Katsuaki Takahashi, Masayuki Hosono, Kazuo Nakano
  • Publication number: 20080074819
    Abstract: A collector voltage of a power management semiconductor device is detected by a first comparator, and when the detected collector voltage exceeds a first reference voltage, the first comparator outputs a first detection signal. Furthermore, a gate voltage of the power management semiconductor device is detected by a second comparator, and when the detected gate voltage exceeds a second reference voltage, the second comparator outputs a second detection signal. The second reference voltage is a minimum gate voltage for feeding a rated power to the power management semiconductor device or over, and less than a line power voltage of a drive circuit of the power management semiconductor device. When both the first detection signal and second detection signal are being outputted, the gate voltage is reduced by a gate voltage reduction means so as to protect the power management semiconductor device from overcurrent and overvoltage.
    Type: Application
    Filed: November 9, 2007
    Publication date: March 27, 2008
    Applicant: HITACHI, LTD.
    Inventors: Masataka Sasaki, Katsumi Ishikawa, Ryuichi Saito, Koichi Suda, Katsuaki Takahashi
  • Patent number: 7295412
    Abstract: A collector voltage of a power management semiconductor device is detected by a first comparator, and when the detected collector voltage exceeds a first reference voltage, the first comparator outputs a first detection signal. Furthermore, a gate voltage of the power management semiconductor device is detected by a second comparator, and when the detected gate voltage exceeds a second reference voltage, the second comparator outputs a second detection signal. The second reference voltage is a minimum gate voltage for feeding a rated power to the power management semiconductor device or over, and less than a line power voltage of a drive circuit of the power management semiconductor device. When both the first detection signal and second detection signal are being outputted, the gate voltage is reduced by a gate voltage reduction means so as to protect the power management semiconductor device from overcurrent and overvoltage.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: November 13, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Masataka Sasaki, Katsumi Ishikawa, Ryuichi Saito, Koichi Suda, Katsuaki Takahashi
  • Patent number: 6966715
    Abstract: The present invention relates to a film transfer tool that allows a transfer head to be disposed in any of the spaces between letters of normally used word processors for implementation of a smooth transfer operation of film. The film transfer tool includes a feed reel and a take-up reel, which are adapted to interlock with each other. The reels are disposed within a case, and a film transfer tape is fed out from the feed reel to be moved along a surface while being pressed thereagainst by a transfer head protruding from the case. The transfer tape is then taken up by the take-up reel. The film transfer tool also includes a support frame and a transfer roller to rotatably extend between facing side pieces of the support frame and having an outside diameter ranging from 1 mm to 3 mm.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: November 22, 2005
    Assignee: Plus Stationery Corporation
    Inventors: Yasuo Narita, Katsuaki Takahashi
  • Publication number: 20050135967
    Abstract: An automatic analyzer which can remove air bubbles in a photometric light path within a reaction tank and can provide accurate measurement results with stability. The automatic analyzer comprises a reaction cell for mixing a sample and a reagent therein, a constant temperature bath for holding water in which the reaction cell is immersed, a suction pipe for sucking the water in the constant temperature bath, a return pipe for returning the water to the constant temperature bath, a pump disposed between the suction pipe and the return pipe and circulating the water, a heater for heating the water circulated in the constant temperature bath by the pump, and an air-bubble removing unit disposed between the suction pipe and the return pipe, having a water-tight structure to hold the constant temperature bath water therein, and removing air bubbles based on a difference in gravity between the water and the air bubbles.
    Type: Application
    Filed: December 16, 2004
    Publication date: June 23, 2005
    Inventors: Tetsuya Isobe, Katsuaki Takahashi, Masaharu Nishida
  • Publication number: 20050112025
    Abstract: An automatic analyzer which can perform automatic re-measurement, can release a sample for transfer to another unit, can easily perform pre-dilution of the sample, and is adaptable for a reduction in amount of the sample. The automatic analyzer comprises a reaction disk holding a plurality of reaction cells arranged in a row along the circumference of the reaction disk, and a sample dispensing mechanism for dispensing samples into the reaction cells on the reaction disk. The sample dispensing mechanism comprises a dispensing nozzle for dispensing the samples and a support mechanism for supporting the dispensing nozzle, and the support mechanism is disposed inside the circumference of the reaction disk along which the reaction cells are arranged in a row.
    Type: Application
    Filed: November 23, 2004
    Publication date: May 26, 2005
    Inventors: Katsuaki Takahashi, Masaharu Nishida
  • Publication number: 20040252432
    Abstract: A collector voltage of a power management semiconductor device is detected by a first comparator, and when the detected collector voltage exceeds a first reference voltage, the first comparator outputs a first detection signal. Furthermore, a gate voltage of the power management semiconductor device is detected by a second comparator, and when the detected gate voltage exceeds a second reference voltage, the second comparator outputs a second detection signal. The second reference voltage is a minimum gate voltage for feeding a rated power to the power management semiconductor device or over, and less than a line power voltage of a drive circuit of the power management semiconductor device. When both the first detection signal and second detection signal are being outputted, the gate voltage is reduced by a gate voltage reduction means so as to protect the power management semiconductor device from overcurrent and overvoltage.
    Type: Application
    Filed: February 9, 2004
    Publication date: December 16, 2004
    Applicant: HITACHI, LTD.
    Inventors: Masataka Sasaki, Katsumi Ishikawa, Ryuichi Saito, Koichi Suda, Katsuaki Takahashi
  • Publication number: 20040208787
    Abstract: In an automatic analyzer, when a sample is newly added, all sample barcodes on a sample disk are read. Immediately before dispensing it, second time reading is performed, and the result thereof is checked against that of the first time reading. A sample hand-contact preventing plate is provided above the reading position and dispensing position in order to prevent the sample from being exchanged after the second time reading. This hand-contact preventing plate has a damage-preventing configuration to protect a hand and fingers of an operator against a sampling probe.
    Type: Application
    Filed: April 13, 2004
    Publication date: October 21, 2004
    Inventors: Katsuaki Takahashi, Hiroshi Ohga, Masaharu Nishida
  • Patent number: 6805762
    Abstract: A film transfer tool which allows a transfer head to be disposed in any of the spaces between letters of normally used word processors for implementation of a smooth transfer operation of film and a method of making the same are disclosed. A feed reel 2 and a take-up reel 3 are adapted to interlock with each other and are disposed within a case 1. A film transfer tape a is fed out from the feed reel 2 to be moved along the surface of a paper S while being pressed thereagainst by a transfer head 4 protruding from the case 1, and is then taken up by the take-up reel 3 as a tape from which film has been transferred.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: October 19, 2004
    Assignee: Plus Stationery Corporation
    Inventors: Yasuo Narita, Katsuaki Takahashi
  • Publication number: 20040185549
    Abstract: An automatic analyzer in which, without causing an increase in size and complication of the analyzer, the efficiency of washing cuvettes can be increased and the amount of detergent used can be more effectively saved in comparison with known analyzers. In an automatic analyzer in which a sample and a reagent are dispensed into each of a plurality of cuvettes, a resulting reaction solution is mixed under stirring, and reaction states of the mixed reaction solution are measured successively, the automatic analyzer includes a unit for stirring a detergent in the cuvette when the interior of the cuvette is washed with the detergent after measurement of a reaction occurred in the reaction solution. The automatic analyzer includes a control device controlling steps of reaction measurement and washing carried out in the automatic analyzer and incorporating a sequence of stirring in the washing step. Ultrasonic washing having a high washing effect is used as the unit for stirring a detergent in the cuvette.
    Type: Application
    Filed: January 14, 2004
    Publication date: September 23, 2004
    Inventors: Takehiro Fujita, Katsuaki Takahashi, Masaharu Nishida
  • Publication number: 20040105783
    Abstract: An automatic analyzer according to the present invention is compact, mounting great number of reagents, having high processing ability. Reagent disks are arranged at inside and outside of a reaction disk. A reagent probe can inject a reagent into the position which is common position of both reagent disks. One of plural reagent probes approaches to one of reagent disks at one cycle. Plural reagent probes alternatively approach to the reagent disk. Therefore, the first reagents and the second reagents can be placed on both reagent disks. The mounting number of reagents can be increased without enlarging an analyzer. The cycle time can be shortened to make an automatic analyzer to have high processing ability.
    Type: Application
    Filed: July 8, 2003
    Publication date: June 3, 2004
    Inventors: Isao Yamazaki, Ryuji Tao, Katsuaki Takahashi
  • Patent number: 6740529
    Abstract: A diluting solution moving unit moves a diluting solution in forward and reverse directions in a flow path. A probe is connected to the flow path through a T-junction and sucks a sample. A sample syringe is connected to the flow path through a T-junction. A control unit performs controlling so that the diluting solution moving unit is driven to move the diluting solution in the flow path and the sample syringe is driven to make the probe suck the sample into the flow path to thereby dilute the sucked sample with the diluting solution and further driven so that the sample solution diluted with the diluting solution is delivered from the probe into any one of reaction containers. There can be provided a dispensing apparatus in which dilution of the sample is made in a short time and in which the accuracy of the diluting rate is improved.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: May 25, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Katsuaki Takahashi, Hajime Yamazaki
  • Patent number: 6730186
    Abstract: An object of the present invention is to provide a coating film transfer tool which is made smaller to provide superior portability and which can implement the replacement of a used up coating film transfer tape with fewer operations. According to the invention, there is provided a coating film transfer tool which can facilitate the replacement of coating film transfer tapes markedly by constructing such that when the main body is divided to be opened for supply of the refill for replacement the head automatically rotates to the tape replacement position, whereas when the main body is closed after the replacement with the refill has been completed the tape is automatically taken up to be wrapped around the distal end portion of the head whereby transfer work becomes possible.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: May 4, 2004
    Assignee: Plus Stationery Corporation
    Inventor: Katsuaki Takahashi
  • Publication number: 20040067165
    Abstract: A highly-reliable, inexpensive and small-sized automatic analyzer is provided which can eliminate the need of an additional space for piercing a seal of a reagent bottle and can prevent a deviation of a reagent sampling nozzle from the position of a pierced hole. A piercing tool for piercing the seal of the reagent bottle is fitted over a nozzle of a reagent sampling mechanism, and a stripper for automatically fitting and removing the piercing tool is provided. By fitting the piercing tool for piercing the seal of the reagent bottle over the nozzle of the reagent sampling mechanism, the seal of the reagent bottle can be pierced in situ on a reagent disk by using the piercing tool. An additional space so far required for the seal piercing is no longer needed and a deviation between the seal piercing position and the reagent sampling position is prevented.
    Type: Application
    Filed: October 2, 2003
    Publication date: April 8, 2004
    Inventors: Tetsuya Isobe, Katsuaki Takahashi, Isao Yamazaki