Patents by Inventor Masakazu Kato
Masakazu Kato 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: 20100055773Abstract: Under a state where the zipper 22 of a culture bag is opened, an operator depresses the opening button 43 of an arm 40 with one finger. Consequently, a force for oscillating the arm 40 to separate a retaining portion 49 upward from the culture surface 32 around a pin 42 acts against the urging force of a leaf spring 50. Consequently, the tip 52a of an extended portion 52 ascends to a predetermined position while resisting against the urging force of the leaf spring 50. Since the lower surface 20a of the culture bag 20 is retained by a base 31 and the upper surface 20b is raised upward by the tip 52a of an extended portion 52, opening 24 of the culture bag 20 is widened. Since the width of the base 31 is larger than that of the arm 40, upper space of the culture surface 32 is not occupied by the arm 40 and a sufficiently wide work space is provided in the culture bag 20.Type: ApplicationFiled: November 16, 2007Publication date: March 4, 2010Applicants: JAPAN TISSUE ENGINEERING CO., LTD., NIPRO CORPORATIONInventors: Kazuto Yamada, Naohito Iwata, Masakazu Kato, Ken-ichiro Hata, Akio Shirasu, Yoshihiro Yoshikawa, Atsushi Taguchi
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Patent number: 7619466Abstract: A quadrature demodulator includes a reception section which receives a signal transmitted by an RFID tag and containing a specific pattern and data following the specific pattern and multiplies the reception signal by a local signal to generate an I-signal, while multiplying the reception signal by the local signal shifted in phase by 90 degrees to generate a Q-signal, a first demodulating circuit which squares the I- and Q-signals and adding the resulting I- and Q-signals together to generate data on the basis of the addition result, a second demodulating circuit which detects the specific pattern in the I- and Q-signals to decode the data following one of the detected specific patterns, and a control section which selects one of the first and second demodulating circuits in accordance with a gain determined by the result of the addition between the values of the squared I- and Q-signals.Type: GrantFiled: July 30, 2007Date of Patent: November 17, 2009Assignee: Toshiba Tec Kabushiki KaishaInventors: Sadatoshi Oishi, Nobuo Murofushi, Masakazu Kato
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Patent number: 7561046Abstract: A reader antenna is connected to an interrogator. Conductors are arranged at two places at the opposed marginal edge portions of a radiation plane of the reader antenna along a radiation direction of an electromagnetic wave from the reader antenna. The conductors raises the electric power density above the reader antenna. A storage case is set above the reader antenna and has many items arranged at narrow intervals with radio tags attached thereto. The storage container has the radio tags arranged substantially parallel to the polarization direction of the reader antenna. By doing so, adequate drive power is applied to the radio tag by an electromagnetic wave from the reader antenna.Type: GrantFiled: September 7, 2006Date of Patent: July 14, 2009Assignee: Toshiba Tec Kabushiki KaishaInventors: Masakazu Kato, Sadatoshi Oishi
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Publication number: 20090121984Abstract: An EL display panel including: a pixel array section in which EL display elements whose light emission state is controlled by an active matrix driving system are arranged in a form of a matrix; a first writing control line driving section and a second writing control line driving section configured to drive each writing control line from both sides of the pixel array section; and a first power supply line driving section and a second power supply line driving section configured to drive a power supply line disposed along a direction of a horizontal line from both sides of the pixel array section, the first power supply line driving section and the second power supply line driving section being respectively arranged between the first writing control line driving section and the pixel array section and between the second writing control line driving section and the pixel array section.Type: ApplicationFiled: November 6, 2008Publication date: May 14, 2009Applicant: Sony CorporationInventors: Tetsuro Yamamoto, Katsuhide Uchino, Masakazu Kato
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Publication number: 20080284695Abstract: A IF inversion driving method writes signal voltage of the same polarity to a signal line over a 1F period, and therefore cannot prevent occurrence of crosstalk caused by coupling. Also, shading is caused. In an active matrix type liquid crystal display device including a pixel array unit 11 formed by two-dimensionally arranging pixels 20 in a form of a matrix, the pixel array unit 11 is divided into a plurality of areas (two areas 11A and 11B in a present example) in a vertical direction, while the plurality of areas being vertically scanned in order (alternately in the present example) in a unit of a row, pixels of the plurality of areas are selected in a unit of a row, and a video signal Vsig reversed in polarity in each H is written to the pixels of the selected row.Type: ApplicationFiled: May 10, 2005Publication date: November 20, 2008Inventors: Masakazu Kato, Hiroyuki Sakurai, Kohichi Ohmura
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Publication number: 20080231425Abstract: A quadrature demodulation device effectively utilizes the result of quadrature detection in order to improve demodulation efficiency. The quadrature modulation device includes a quadrature detector DT which performs quadrature detection on a reception signal obtained by receiving a radio wave from a radio frequency identification tag, to generate an in-phase signal and a quadrature-phase signal, and a demodulation circuit DM which detects a preamble of a particular transition pattern in at least one of the in-phase signal and the quadrature-phase signal and which decodes the at least one of the in-phase signal and the quadrature-phase signal to obtain data succeeding the preamble, the demodulation circuit DM further performing error detection on a decoding result to check for errors.Type: ApplicationFiled: April 16, 2008Publication date: September 25, 2008Inventors: Kouichi Sano, Yasuo Matsumoto, Masakazu Kato, Takahiro Shimura
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Publication number: 20080175305Abstract: A hopping pattern setting section sets, as a frequency hopping pattern code, elements of a matrix in which all integers of “1” to “the number of frequencies to be used” appear only once and which is obtained by adding, as an offset, any one of integers of “0” to “(the number of frequencies to be used)?1” to each of elements of a matrix obtained by excluding integers larger than the number of frequencies to be used from a matrix in which all integers of “1” to “(prime number larger than the number of frequencies to be used)?1” appear only once. A frequency oscillation section converts the frequency hopping pattern code into the frequencies to be used to output unmodulated signals of the frequencies to a transmission section and a reception section.Type: ApplicationFiled: December 17, 2007Publication date: July 24, 2008Inventors: Nobuo Murofushi, Masakazu Kato
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Publication number: 20080088453Abstract: A radio communication apparatus sends a signal for assigning a predetermined number of slots to one or more response devices. The response devices individually select one slot, and transmit own specific identification information in that slot. The radio communication apparatus has an all slot number counter and an empty slot number counter. The all slot number counter counts the number of all slots received within a slot counting period. The empty slot number counter counts empty slots among those received within the slot counting period. The radio communication apparatus calculates an estimated number of unread response devices whose identification information is not yet read, from the counted values of each counter and the number of slots at the present time. And, based on the estimated number of unread response devices, the radio communication apparatus determines the number of slots to be assigned next.Type: ApplicationFiled: October 11, 2007Publication date: April 17, 2008Inventors: Yasuhito Kiji, Yasuo Matsumoto, Kouichi Sano, Masakazu Kato, Nobuo Murofushi, Takahiro Shimura
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Publication number: 20080038821Abstract: A cell-sheet releasing agent of the present invention contains an aminated polyrotaxane. The polyrotaxane constituting the skeleton of the cell-releasing agent of the present invention has a structure in which cavities of a plurality of cyclic molecules are threaded onto a linear molecule and both terminals of the linear molecule have a bulky cap bonded thereto so that the cyclic molecules are not dethreaded from the linear molecule. Furthermore, the aminated polyrotaxane contained in the cell-releasing agent of the present invention is a compound in which at least some of hydroxy groups in the cyclodextrin structure contained in the polyrotaxane are each substituted with a substituent having an amino group. According to this cell-sheet releasing agent, cultured cells anchored to the surface of a container can be released without damaging the cells and without controlling the temperature.Type: ApplicationFiled: September 9, 2005Publication date: February 14, 2008Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, JAPAN TISSUE ENGINEERING CO., LTD.Inventors: Wanpen Tachaboonyakiat, Masakazu Kato, Tooru Ooya, Nobuhiko Yui
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Publication number: 20080024208Abstract: A quadrature demodulator includes a reception section which receives a signal transmitted by an RFID tag and containing a specific pattern and data following the specific pattern and multiplies the reception signal by a local signal to generate an I-signal, while multiplying the reception signal by the local signal shifted in phase by 90 degrees to generate a Q-signal, a first demodulating circuit which squares the I- and Q-signals and adding the resulting I- and Q-signals together to generate data on the basis of the addition result, a second demodulating circuit which detects the specific pattern in the I- and Q-signals to decode the data following one of the detected specific patterns, and a control section which selects one of the first and second demodulating circuits in accordance with a gain determined by the result of the addition between the values of the squared I- and Q-signals.Type: ApplicationFiled: July 30, 2007Publication date: January 31, 2008Inventors: Sadatoshi Oishi, Nobuo Murofushi, Masakazu Kato
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Publication number: 20080024280Abstract: RFID interrogator device carries out an automatic gain control when an RF signal from RFID tag with a backscatter radio-communication is received. To carry out the automatic gain control, amplitude of the reception signal is measured within a prescribed time corresponding to a length of preamble added to the head of data of the RF signal. An AGC value is determined based on the measured amplitude value.Type: ApplicationFiled: July 24, 2007Publication date: January 31, 2008Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventor: Masakazu Kato
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Publication number: 20070164107Abstract: An RF tag reading apparatus reads information from RF tags affixed to postal envelopes by a single operation. An article container contains a large number of postal envelopes provided with RF tags. A reader antenna, which is connected to an interrogator via a coaxial cable, is disposed under the article container. Maximum gain directions of the RF tags of the respective postal envelopes are uniformly directed to the reader antenna. The respective postal envelopes contained in the article container are arranged face to face with each other in a direction orthogonal to the maximum directions of the RF tags. Since a maximum gain direction of the reader antenna is oriented toward a base end surface of the article container, the maximum gain directions of the RF tags are opposed to the maximum gain direction of the reader antenna.Type: ApplicationFiled: March 22, 2007Publication date: July 19, 2007Applicant: Toshiba TEC Kabushiki KaishaInventors: Sadatoshi Oishi, Masakazu Kato, Naohiro Matsushita, Koichi Sano, Nobuo Murofushi, Yasuo Matsumoto
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Publication number: 20070117589Abstract: A wireless base station uses a leaky transmission line as an antenna, and a wireless base station uses a leaky transmission line as an antenna. The leaky transmission line and the leaky transmission line are laid parallel to each other. An interval between the leakage transmission paths is set to a distance at which it is impossible for the wireless base stations to sense each other's carrier while using a same wireless channel, and to be not more than twice as long as a maximum distance between leaky transmission lines, and wireless communication terminals at which it is possible for wireless base stations to respectively establish wireless links to wireless communication terminals.Type: ApplicationFiled: November 10, 2006Publication date: May 24, 2007Inventors: Tomonori Sugiyama, Naohiro Matsushita, Masakazu Kato, Sadatoshi Oishi, Jun Yaginuma, Kenichiro Watanabe, Kenjiro Aizawa, Hiroyuki Nakatsukasa
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Publication number: 20070046473Abstract: An article recognition device includes a scanner base. A first tag communication antenna and a second tag communication antenna are provided on the scanner base. A direction of an axis of directivity of the first tag communication antenna faces a direction of an axis of directivity of a first tag antenna that a first radio frequency tag provided on an article has. A direction of an axis of directivity of the second tag communication antenna faces a direction of an axis of directivity of a second tag antenna that a second radio frequency tag provided on the same article has. The respective axes of directivity of the first tag communication antenna and the second tag communication antenna cross each other.Type: ApplicationFiled: August 29, 2006Publication date: March 1, 2007Inventor: Masakazu Kato
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Publication number: 20070013482Abstract: A reader antenna is connected to an interrogator. Conductors are arranged at two places at the opposed marginal edge portions of a radiation plane of the reader antenna along a radiation direction of an electromagnetic wave from the reader antenna. The conductors raises the electric power density above the reader antenna. A storage case is set above the reader antenna and has many items arranged at narrow intervals with radio tags attached thereto. The storage container has the radio tags arranged substantially parallel to the polarization direction of the reader antenna. By doing so, adequate drive power is applied to the radio tag by an electromagnetic wave from the reader antenna.Type: ApplicationFiled: September 7, 2006Publication date: January 18, 2007Inventors: Masakazu Kato, Sadotoshi Oishi
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Publication number: 20060109132Abstract: There is disclosed an RF tag holding structure that can maintain sufficient performance of data-reading from an RF tag when the structure mounting a commercially available RF tag is attached to an article, or even if a number of planar articles each carrying an RF tag are closely arranged sideways so as to face each other on its planar surface. A narrow rectangular thru-opening 3 is formed on a side of one longer edge line of a holding member 1, wherein the rectangular thru-opening 3 is provided in such a size that an IC chip 21 and antenna 22 in the RF tag 2 can be disposed in the air space of the thru-opening. A supporting part for holding the RF tag within the thru-opening is formed on the internal circumference of the thru-opening of the holding member 1 such that the RF tag is supported so as not to overlap an antenna on a substrate in the thru-opening direction.Type: ApplicationFiled: November 8, 2005Publication date: May 25, 2006Applicant: Toshiba TEC Kabushiki KaishaInventors: Sadatoshi Oishi, Masakazu Kato
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Publication number: 20060097047Abstract: An RF tag reading apparatus reads information from RF tags affixed to postal envelopes by a single operation. An article container contains a large number of postal envelopes provided with RF tags. A reader antenna, which is connected to an interrogator via a coaxial cable, is disposed under the article container. Maximum gain directions of the RF tags of the respective postal envelopes are uniformly directed to the reader antenna. The respective postal envelopes contained in the article container are arranged face to face with each other in a direction orthogonal to the maximum directions of the RF tags. Since a maximum gain direction of the reader antenna is oriented toward a base end surface of the article container, the maximum gain directions of the RF tags are opposed to the maximum gain direction of the reader antenna.Type: ApplicationFiled: December 20, 2005Publication date: May 11, 2006Inventors: Sadatoshi Oishi, Masakazu Kato, Naohiro Matsushita, Koichi Sano, Nobuo Murofushi, Yasuo Matsumoto
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Patent number: 7026080Abstract: The invention provides a positive photosensitive resin composition which is free from film reduction, swelling or peeling at the time of development with an aqueous alkaline solution and which provides a dimensionally stable patterns after curing, and of which the final cured film has a low water absorption and excellent alkaline resistance. A positive photosensitive polyimide resin composition characterized by comprising an organic solvent-soluble polyimide having repeating units represented by the formula (1): (wherein m is an integer of from 3 to 10,000, R1 is a tetravalent organic group, R2 is a bivalent organic group, provided that from 5 to 100 mol % of R2 is a bivalent organic group having fluorine), a polyamic acid and a compound capable of generating an acid by irradiation with light.Type: GrantFiled: September 18, 2002Date of Patent: April 11, 2006Assignee: Nissan Chemical Industries, Ltd.Inventors: Tomonari Nakayama, Masakazu Kato, Takayasu Nihira
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Publication number: 20050077353Abstract: An RF tag reading apparatus reads information from RF tags affixed to postal envelopes by a single operation. An article container contains a large number of postal envelopes provided with RF tags. A reader antenna, which is connected to an interrogator via a coaxial cable, is disposed under the article container. Maximum gain directions of the RF tags of the respective postal envelopes are uniformly directed to the reader antenna. The respective postal envelopes contained in the article container are arranged face to face with each other in a direction orthogonal to the maximum directions of the RF tags. Since a maximum gain direction of the reader antenna is oriented toward a base end surface of the article container, the maximum gain directions of the RF tags are opposed to the maximum gain direction of the reader antenna.Type: ApplicationFiled: October 6, 2004Publication date: April 14, 2005Applicant: Toshiba TEC Kabushiki KaishaInventors: Sadatoshi Oishi, Masakazu Kato, Naohiro Matsushita, Koichi Sano, Nobuo Murofushi, Yasuo Matsumoto
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Publication number: 20040197699Abstract: The invention provides a positive photosensitive resin composition which is free from film reduction, swelling or peeling at the time of development with an aqueous alkaline solution and which provides a dimensionally stable patterns after curing, and of which the final cured film has a low water absorption and excellent alkaline resistance.Type: ApplicationFiled: March 5, 2004Publication date: October 7, 2004Inventors: Tomonari Nakayama, Masakazu Kato, Takayasu Nihira