Patents by Inventor Takashi Kawabata

Takashi Kawabata 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: 7522894
    Abstract: A radio receiving apparatus includes two receiving antennas, two upstream RF amplifiers, a SAW filter having two input IDTs and an output IDT, a downstream RF amplifier, and a detector circuit. The antennas are connected to the respective input IDTs via the respective upstream RF amplifiers. The detector circuit is connected via the downstream RF amplifier to the output IDT, which receives a signal from each of the two input IDTs. The distances from the center of the output IDT to the centers of the input IDTs differ from one another. The SAW filter functions as two band-pass filters, two delay circuits connected to the respective band-pass filters, and a combiner circuit for combining the outputs from the delay circuits.
    Type: Grant
    Filed: January 8, 2004
    Date of Patent: April 21, 2009
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akira Kato, Takashi Kawabata
  • Publication number: 20070149964
    Abstract: A radiofrequency electric current ablation catheter comprising a tip electrode, a means for detecting temperature of the tip electrode, a catheter shaft and a portion for operation at proximal end, wherein the tip electrode has a shape formed by connecting three or more spherical or approximately spherical surfaces having centers on the same straight line to each other with a curved surface. The catheter has the tip electrode which has a small diameter, is brought into excellent contact with organisms, can provide a great output power and is easily cooled with the circulating blood stream.
    Type: Application
    Filed: January 26, 2005
    Publication date: June 28, 2007
    Inventors: Takashi Kawabata, Tadatsugu Onuma, Yasuo Sakano
  • Publication number: 20070047157
    Abstract: At least one exemplary embodiment is directed to a recording apparatus, which includes a sensor having a plurality of light-emitting elements and a plurality of light-receiving elements. The sensor can be configured to perform a detection operation. The detection operation includes at least two of an operation for detecting an edge of a recording medium, an operation for detecting a distance between a recording head and the recording medium, an operation for detecting the density of an image formed on the recording medium, and an operation for detecting the kind of the recording medium.
    Type: Application
    Filed: August 28, 2006
    Publication date: March 1, 2007
    Applicant: Canon Kabushiki Kaisha
    Inventors: Katsutoshi Miyahara, Takashi Kawabata
  • Publication number: 20070046713
    Abstract: At least one exemplary embodiment is directed to a sensor for measuring the distance between the sensor and a measuring surface, which includes a light-emitting element and a plurality of light-receiving elements. The light-receiving elements are arranged so that the light axes thereof do not cross one another.
    Type: Application
    Filed: August 22, 2006
    Publication date: March 1, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Katsutoshi Miyahara, Takashi Kawabata
  • Patent number: 7177585
    Abstract: An image forming apparatus registers both sides of sheets with great precision in a sheet transportation direction in both-side image formation. The image forming apparatus includes: photoconductive drums holding toner images; an intermediate transfer belt temporarily holding the toner images; a secondary transfer roll that transfers the toner images to a sheet in a transfer unit; a registration roll rotating toward the transfer unit being in sheet feeding timing; a fixing unit fixing the toner images transferred to a first side of the sheet; reversion transportation paths reversing the sheet and again transporting the sheet to the transfer unit; a first sensor detecting the image of the first side of the sheet; and a second sensor that detects the toner images held in the intermediate transfer belt.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: February 13, 2007
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Satoshi Matsuzaka, Keiji Yamamoto, Satoru Torimaru, Takashi Kawabata, Masaaki Takahashi, Yoko Miyamoto, Kiyotoshi Kaneyama, Katsunori Kikuchihara
  • Publication number: 20060130934
    Abstract: Ferritic stainless steel was produced by the melting method. The ferritic stainless steel was worked to the shape of a medical device for living soft tissue to obtain a medical device body. The medical device body was brought into contact with gas including nitrogen at a 800° C. treatment temperature or more to make the ferritic stainless steel forming the medical device body absorb the nitrogen and transform at least part of the ferritic stainless steel to austenite.
    Type: Application
    Filed: November 11, 2003
    Publication date: June 22, 2006
    Applicants: Independent Administrative Institution National Institute For Materials Science, Japan Lifeline Co., Ltd.
    Inventors: Daisuke Kuroda, Takao Hanawa, Morihide Makino, Takashi Kawabata
  • Patent number: 7003237
    Abstract: Image formation condition is available, which hardly causes imperfections of the image quality. A full-color image formation system selects plural secondary transfer conditions in a secondary transfer unit within a specific range, forms test charts according to each of the secondary transfer conditions selected, and prints them out. A user checks by viewing the test charts printed on each recording sheet, and selects a page number of the sheet where the user evaluated an image quality as the best; and the image formation system sets the secondary transfer condition for the sheet as a standard secondary transfer condition thereafter.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: February 21, 2006
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoko Miyamoto, Takashi Kawabata, Keiji Yamamoto, Satoru Torimaru, Masaaki Takahashi, Katsunori Kikuchihara, Kiyotoshi Kaneyama, Satoshi Matsuzaka
  • Patent number: 6973272
    Abstract: The present invention enables registration adjustments during actual use of an image forming apparatus. A test pattern is formed on a sheet in a full-color image forming apparatus and the test pattern formed on the sheet is read in an image read unit. From the result of reading the test pattern, misregistrations of vertical and horizontal scaling factors, parallelism, squareness, skew, side registration, and lead registration in the test pattern are determined, and mounting positions, drive timings, drive speeds, and the like of constituent members are adjusted.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: December 6, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Keiji Yamamoto, Ryo Ando, Toshiyuki Kazama, Satoru Torimaru, Takashi Kawabata, Katsunori Kikuchihara, Masaaki Takahashi, Yoko Miyamoto, Satoshi Matsuzaka, Kiyotoshi Kaneyama
  • Publication number: 20050261626
    Abstract: A balloon catheter comprises a connecting member, a catheter shaft, a balloon and a heat-generating member contacting a fluid in the balloon or in a distal portion of the catheter shaft. A medical apparatus have the balloon catheter. In a method for treating a living organ, a low temperature fluid is introduced and flows through the balloon, energy is introduced into the catheter shaft, is converted into heat by the heat-generating member and heats the fluid, and a living organ is heated and cooled for a medical treatment. A portion of disease is heated from 35˜40° C. to 60˜80° C. within 30 seconds, expanded by applying a pressure of 500 kPa or smaller to the balloon, and cooled to 45° C. or lower within 40 seconds. A living organ can be heated and cooled within a very short time to cure a diseased tissue. A blood vessel can be expanded without damages.
    Type: Application
    Filed: May 21, 2004
    Publication date: November 24, 2005
    Applicants: KEIO UNIVERSITY, JAPAN LIFELINE CO., LTD.
    Inventors: Tsunenori Arai, Atsushi Utsumi, Takashi Kawabata
  • Publication number: 20050180377
    Abstract: When the total number of transmission request time slots from a base station and a subscriber station exceeds the the radio line, the ratio of the number of communication time slots against the total number of transmission request times slots from the base station and the subscriber station is calculated and the number of time slots allocated for each subscriber station is determined by a product of a total number and ratio of the transmission request time slots from the subscriber station.
    Type: Application
    Filed: September 6, 2002
    Publication date: August 18, 2005
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Eiji Muramoto, Kougi Satou, Takashi Kawabata, Norihiko Toyota
  • Patent number: 6930993
    Abstract: In a TDMA communication system in which a base station communicates with a plurality of subscriber stations, communication time slots used in a wireless communication are allocated/arranged while avoiding an occurrence of interference. In the case that interference (51) occurs in a communication time slot (411) of a line (71) through which the communication is made from a subscriber station (21) to a base station (1), interference information is registered into an interference time slot database (101) of the base station (1). When the communication time slots are reallocated and rearranged, a TDMA control unit of the base station (1) executes the communication time slot reallocation/rearrangement by referring to information registered in the interference time slot database (101), so that the occurrence of interference is avoided.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: August 16, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tomokazu Hamada, Youichi Moritani, Takashi Kawabata, Shuji Ito
  • Patent number: 6904262
    Abstract: The invention provides a double-faced image formation system that prevents transfer and adhesion of a lubricant to an image retaining conveyer and an intermediate transfer part. The system is provided with, on a return path for reversing and conveying a sheet having toner images fixed on one side thereof, a front face electrifying unit and a rear face electrifying unit. Oil adhered on the rear face of the sheet in a fixation unit by the rear face electrifying unit is electrified to a negative polarity, and the oil adhered on the rear face is made impossible to transfer to an intermediate transfer belt. The oil adhered on the front face of the sheet in the fixation unit by the front face electrifying unit is electrified to a positive polarity, and the oil adhered on the front face is made impossible to transfer to a secondary transfer conveyance belt.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: June 7, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Masaaki Takahashi, Keiji Yamamoto, Satoru Torimaru, Katsunori Kikuchihara, Yoko Miyamoto, Kiyotoshi Kaneyama, Satoshi Matsuzaka, Takashi Kawabata
  • Patent number: 6873607
    Abstract: In a radio communication system in which multiple access is carried out between a base station and a plurality of subscriber stations by a TDMA communication method, occurrence of the interference in the R channels through which the subscriber stations (21 to 24) issue a call request to the base station (1) can be detected precisely, and time slot arrangement of the R channels is changed by detecting the interference to thus avoid the interference.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: March 29, 2005
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tomokazu Hamada, Youichi Moritani, Takashi Kawabata, Shuji Ito
  • Publication number: 20050025542
    Abstract: The invention provides a double-faced image formation system that prevents transfer and adhesion of a lubricant to an image retaining conveyer and an intermediate transfer part. The system is provided with, on a return path for reversing and conveying a sheet having toner images fixed on one side thereof, a front face electrifying unit and a rear face electrifying unit. Oil adhered on the rear face of the sheet in a fixation unit by the rear face electrifying unit is electrified to a negative polarity, and the oil adhered on the rear face is made impossible to transfer to an intermediate transfer belt. The oil adhered on the front face of the sheet in the fixation unit by the front face electrifying unit is electrified to a positive polarity, and the oil adhered on the front face is made impossible to transfer to a secondary transfer conveyance belt.
    Type: Application
    Filed: October 21, 2003
    Publication date: February 3, 2005
    Inventors: Masaaki Takahashi, Keiji Yamamoto, Satoru Torimaru, Katsunori Kikuchihara, Yoko Miyamoto, Kiyotoshi Kaneyama, Satoshi Matsuzaka, Takashi Kawabata
  • Publication number: 20040232589
    Abstract: The present invention provides a balloon catheter in which the balloon is a thin film and can be compactly folded up when the balloon is deflated, while the thin film has high strength so that the balloon has excellent pressure resistance when inflated, and which is safe and easy to manipulate, and also provides a method for manufacturing a balloon for use in the balloon catheter.
    Type: Application
    Filed: June 25, 2004
    Publication date: November 25, 2004
    Inventors: Takashi Kawabata, Kaneto Shiraki, Morihide Makino
  • Publication number: 20040198238
    Abstract: A radio receiving apparatus includes two receiving antennas, two upstream RF amplifiers, a SAW filter having two input IDTs and an output IDT, a downstream RF amplifier, and a detector circuit. The antennas are connected to the respective input IDTs via the respective upstream RF amplifiers. The detector circuit is connected via the downstream RF amplifier to the output IDT, which receives a signal from each of the two input IDTs. The distances from the center of the output IDT to the centers of the input IDTs differ from one another. The SAW filter functions as two band-pass filters, two delay circuits connected to the respective band-pass filters, and a combiner circuit for combining the outputs from the delay circuits.
    Type: Application
    Filed: January 8, 2004
    Publication date: October 7, 2004
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Akira Kato, Takashi Kawabata
  • Publication number: 20040184853
    Abstract: An image forming apparatus registers both sides of sheets with great precision in a sheet transportation direction in both-side image formation. The image forming apparatus includes: photoconductive drums holding toner images; an intermediate transfer belt temporarily holding the toner images; a secondary transfer roll that transfers the toner images to a sheet in a transfer unit; a registration roll rotating toward the transfer unit being in sheet feeding timing; a fixing unit fixing the toner images transferred to a first side of the sheet; reversion transportation paths reversing the sheet and again transporting the sheet to the transfer unit; a first sensor detecting the image of the first side of the sheet; and a second sensor that detects the toner images held in the intermediate transfer belt.
    Type: Application
    Filed: October 14, 2003
    Publication date: September 23, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi Matsuzaka, Keiji Yamamoto, Satoru Torimaru, Takashi Kawabata, Masaaki Takahashi, Yoko Miyamoto, Kiyotoshi Kaneyama, Katsunori Kikuchihara
  • Publication number: 20040184830
    Abstract: Image formation condition is available, which hardly causes imperfections of the image quality. A full-color image formation system selects plural secondary transfer conditions in a secondary transfer unit within a specific range, forms test charts according to each of the secondary transfer conditions selected, and prints them out. A user checks by viewing the test charts printed on each recording sheet, and selects a page number of the sheet where the user evaluated an image quality as the best; and the image formation system sets the secondary transfer condition for the sheet as a standard secondary transfer condition thereafter.
    Type: Application
    Filed: October 10, 2003
    Publication date: September 23, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoko Miyamoto, Takashi Kawabata, Keiji Yamamoto, Satoru Torimaru, Masaaki Takahashi, Katsunori Kikuchihara, Kiyotoshi Kaneyama, Satoshi Matsuzka
  • Publication number: 20040175196
    Abstract: The present invention enables registration adjustments during actual use of an image forming apparatus. A test pattern is formed on a sheet in a full-color image forming apparatus and the test pattern formed on the sheet is read in an image read unit. From the result of reading the test pattern, misregistrations of vertical and horizontal scaling factors, parallelism, squareness, skew, side registration, and lead registration in the test pattern are determined, and mounting positions, drive timings, drive speeds, and the like of constituent members are adjusted.
    Type: Application
    Filed: October 10, 2003
    Publication date: September 9, 2004
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Keiji Yamamoto, Ryo Ando, Toshiyuki Kazama, Satoru Torimaru, Takashi Kawabata, Katsunori Kikuchihara, Masaaki Takahashi, Yoko Miyamoto, Satoshi Matsuzaka, Kiyotoshi Kaneyama
  • Patent number: 6503223
    Abstract: A balloon catheter provided with a first tubular member in which at least one balloon lumen is formed inside along a longitudinal direction thereof; a balloon unit which is communicated internally with the balloon lumen formed in the first tubular member and capable of being expanded by a fluid fed through that balloon lumen; a second tubular member extending axially inside the balloon unit and provided axially therein with at least one guidewire lumen; a distal end of the balloon unit connected with a distal end of said second tubular member; an overlapped portion formed by overlapping a proximal end of said second tubular member with a distal end of said first tubular member axially over a predetermined distance; a neck portion of a proximal end side of said balloon unit directly or indirectly connected with at least part of said overlapped portion so as to cover at least part of said overlapped portion; and a recess in which a part of an outer circumference of the proximal end of the second tubular member
    Type: Grant
    Filed: September 18, 2000
    Date of Patent: January 7, 2003
    Assignee: Nippon Zeon Co., Ltd.
    Inventors: Akira Sekido, Masaru Uchiyama, Shinichi Miyata, Takashi Kawabata