Patents by Inventor Takeshi Sakai

Takeshi Sakai 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).

  • Error-correcting communication method and communication apparatus with de-interleaving and rate de-matching
    Patent number: 7111207
    Abstract: A method and device for de-interleaving and rate de-matching of a demodulated signal by batch processing at a receiving side, which receives a radio signal subjected to interleaving and rate matching at the transmitting side for error correction.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: September 19, 2006
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Takeshi Sakai
  • Sulfated fucoglucuronomannan
    Publication number: 20060183715
    Abstract: An enzyme which decomposes a sulfated fucoglucuronomannan and is useful in the field of glycotechnology; a process for producing the enzyme; a fucoidan fraction reduced in the number of the kinds of molecules and useful as a reagent in glycotechnology; a sulfated fucoglucuronomannan oligosaccharide; and processes for producing the fraction and oligosaccharide.
    Type: Application
    Filed: December 28, 2005
    Publication date: August 17, 2006
    Applicant: TAKARA BIO INC.
    Inventors: Takeshi Sakai, Hitomi Kimura, Katsushige Ikai, Ikunoshin Kato
  • Semiconductor device and a method of manufacturing the same
    Patent number: 7087955
    Abstract: A semiconductor device has a nonvolatile memory employing a split-gate type memory cell structure, using a nitride film as a charge storage layer. An n-type semiconductor region is formed in a main surface of a semiconductor substrate, and then, a memory gate electrode of a memory cell of a split gate type and a charge storage layer are formed over the semiconductor region. Subsequently, side walls are formed on side surfaces of the memory gate electrode, and a photoresist pattern is formed over the main surface of the semiconductor substrate. The photoresist pattern serves as an etching mask, and a part of the main surface of the semiconductor substrate is removed by etching to form a dent. In the region of the dent, the n-type semiconductor region is removed. Then, a p-type semiconductor region for forming a channel of an nMIS transistor for selecting a memory cell is formed.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: August 8, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Yoshiyuki Kawashima, Fumitoshi Ito, Takeshi Sakai, Yasushi Ishii, Yasuhiro Kanamaru, Takashi Hashimoto, Makoto Mizuno, Kousuke Okuyama
  • Ejector cycle device
    Patent number: 7086248
    Abstract: An ejector cycle device includes a gas-liquid separator for separating a refrigerant flowing out of an ejector into gas-phase refrigerant and liquid-phase refrigerant. The gas-liquid separator further separates refrigeration oil from the refrigerant. The refrigeration oil used by the ejector cycle device is less compatible to the refrigerant on the low-pressure side than the compatibility of the refrigeration oil with the refrigerant on a high-pressure side.
    Type: Grant
    Filed: September 26, 2003
    Date of Patent: August 8, 2006
    Assignee: DENSO Corporation
    Inventors: Takeshi Sakai, Susumu Kawamura
  • Video display device and color temperature correction method for the same
    Patent number: 7084880
    Abstract: A video display apparatus comprises a color temperature correction circuit which controls temperature color of an input video signal; a display device which displays an image upon basis of said video signal corrected by said color temperature correction circuit; and a signal producing circuit which obtains a hue signal from said input video signal. The color temperature correction circuit controls said hue signal corresponding to the video signal of white color attributes, which has luminance equal to or greater than a predetermined value and chroma saturation equal to or less than a predetermined value, whereby achieving the color temperature correction.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: August 1, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Katsunobu Kimura, Takaaki Matono, Haruki Takata, Takeshi Sakai, Wataru Kato
  • Glucuronofucan sulfate
    Publication number: 20060166335
    Abstract: Three enzymes degrading sulfated glucuronofucan; processes for producing these enzymes; activators for these enzymes; glucuronofucan sulfate and degradation products thereof; and a novel microorganism.
    Type: Application
    Filed: March 14, 2006
    Publication date: July 27, 2006
    Applicant: TAKARA BIO INC.
    Inventors: Takeshi Sakai, Kumiko Ishizuka, Kaoru Kojima, Kazuo Shimanaka, Katsushige Ikai, Ikunoshin Kato
  • Electric rotary machine
    Publication number: 20060138876
    Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient ?1 of the stator core, a linear thermal expansion coefficient ?2 of the stator coil, a linear thermal expansion coefficient ?3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient ?4 of the frame satisfy a relation that ?1<?2<?4??3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.
    Type: Application
    Filed: September 15, 2005
    Publication date: June 29, 2006
    Applicant: HITACHI, LTD.
    Inventors: Toshiaki Ueda, Takeshi Sakai, Susumu Terumoto, Toshinori Watanabe
  • Method for cultivating mushroom
    Publication number: 20060112618
    Abstract: The present invention relates to a method for cultivating a mushroom of a large size having an excellent shape and crunchy texture, and a mushroom fruit body having the above-mentioned characteristics obtained by the method. According to the present invention, a mushroom fruit body of very high commercial value having a large size, an excellent shape and a dense body, which has never existed, and a method for cultivating the mushroom fruit body are provided.
    Type: Application
    Filed: September 22, 2005
    Publication date: June 1, 2006
    Applicant: TAKARA BIO INC.
    Inventors: Takashi Kawai, Masanobu Kuroda, Takeshi Sakai, Ikunoshin Kato
  • Sulfated fucoglucuronomannan
    Patent number: 7041656
    Abstract: An enzyme which decomposes a sulfated fucoglucuronomannan and is useful in the field of glycotechnology; a process for producing the enzyme; a fucoidan fraction reduced in the number of the kinds of molecules and useful as a reagent in glycotechnology; a sulfated fucoglucuronomannan oligosaccharide; and processes for producing the fraction and oligosaccharide.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: May 9, 2006
    Assignee: Takara Bio Inc.
    Inventors: Takeshi Sakai, Hitomi Kimura, Katsushige Ikai, Ikunoshin Kato
  • Semiconductor device
    Publication number: 20060077713
    Abstract: The degree of integration and the number of rewriting of a semiconductor device having a nonvolatile memory element are improved. A first MONOS nonvolatile-memory-element and a second MONOS nonvolatile-memory-element having a large gate width compared with the first MONOS nonvolatile-memory-element are mounted together on the same substrate, and the first MONOS nonvolatile-memory-element is used for storing program data which is scarcely rewritten, and the second MONOS nonvolatile-memory-element is used for storing processed data which is frequently rewritten.
    Type: Application
    Filed: July 15, 2005
    Publication date: April 13, 2006
    Inventors: Fumitoshi Ito, Yoshiyuki Kawashima, Takeshi Sakai, Yasushi Ishii, Yasuhiro Kanamaru, Takashi Hashimoto, Makoto Mizuno, Kousuke Okuyama, Yukiko Manabe
  • Hydraulic tensioner lifter
    Publication number: 20060063625
    Abstract: To provide an adequate biasing load to an endless transmission belt by biasing forces of a plurality of springs with different biasing forces and oil pressure biasing force to permit an easy adjustment. In a structure which includes an almost cylindrical plunger, a tensioner body into which the plunger is fitted, high pressure oil chambers are formed by the tensioner body and the plunger and supplied with oil pressure. Two tensioner springs, a rigid spring and a soft spring are supported by the tensioner body and are arranged in series for biasing the plunger. The plunger in its fully stretched state is supported by the serially arranged rigid and soft tensioner springs. In a condition when the plunger is pushed back from this fully stretched state by a prescribed amount or further, the plunger is supported by the rigid tensioner spring.
    Type: Application
    Filed: September 15, 2005
    Publication date: March 23, 2006
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Osamu Emizu, Takeshi Sakai, Masashi Furuya
  • Electric rotary machine
    Patent number: 7009316
    Abstract: In the stator of a electric rotary machine in which heat conductive insulation resin is filled at the end portions of a stator coil, the material of a stator core, the stator coil, the heat conductive insulation resin and a frame is selected such that a linear thermal expansion coefficient ?1 of the stator core, a linear thermal expansion coefficient ?2 of the stator coil, a linear thermal expansion coefficient ?3 of the heat conductive insulation resin being filled and a linear thermal expansion coefficient ?4 of the frame satisfy a relation that ?1<?2 <?4 ??3. A cooling medium path is integrally formed within the frame made from aluminum through die casting molding.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: March 7, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Toshiaki Ueda, Takeshi Sakai, Susumu Terumoto, Toshinori Watanabe
  • Multifunction passive socket for flash media cards
    Patent number: 6984152
    Abstract: The present invention enables the use of a single passive socket for multiple types of flash media cards. The present invention provides this by implementing circuitry with a detection scheme (1410, 1610) that notifies a host controller of the type of media card that has been inserted. The form factors and detection scheme can be designed to meet PCMCIA CardBus Plus standards.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: January 10, 2006
    Assignee: Texas Instruments Incorporated
    Inventors: Keith Mowery, Daniel Jensen, Takeshi Sakai, Cheng-Kun Huang
  • Method of manufacturing a nonvolatile semiconductor memory device, and a nonvolatile semiconductor memory device
    Publication number: 20060003508
    Abstract: For enhancing the high performance of a non-volatile semiconductor memory device having an MONOS type transistor, a non-volatile semiconductor memory device is provided with MONOS type transistors having improved performance in which the memory cell of an MONOS non-volatile memory comprises a control transistor and a memory transistor. A control gate of the control transistor comprises an n-type polycrystal silicon film and is formed over a gate insulative film comprising a silicon oxide film. A memory gate of the memory transistor comprises an n-type polycrystal silicon film and is on one of the side walls of the control gate. The memory gate comprises a doped polycrystal silicon film with a sheet resistance lower than that of the control gate comprising a polycrystal silicon film formed by ion implantation of impurities to the undoped silicon film.
    Type: Application
    Filed: June 29, 2005
    Publication date: January 5, 2006
    Inventors: Takeshi Sakai, Yasushi Ishii, Tsutomu Okazaki, Masaru Nakamichi, Toshikazu Matsui, Kyoya Nitta, Satoru Machida, Munekatsu Nakagawa, Yuichi Tsukada
  • Programmable glitch filter for an asynchronous data communication interface
    Patent number: 6981204
    Abstract: An apparatus and a method for filtering glitches in a data communications controller receiving asynchronous input data signals varying between two signal levels representing two bit values and having a predetermined input bit period, and sending output data signals corresponding to the input data signals. Glitches are detected in the input data signals by detecting reversals of signal level having a duration less than the input bit period. A glitch time value corresponding to the glitch duration is determined, and then a sampling clock rate is set at a rate determined from the glitch time value. The input data signals are sampled at the sampling clock rate to generate a sequence of input data samples. A voting number of input data samples are monitored and an output signal is provided, representing the value of a majority of the sequential input data samples.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: December 27, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Takeshi Sakai, Rameshkumar Ravikumar, Mohammad Jahidur Rahman
  • Sulfated fucan
    Publication number: 20050255564
    Abstract: An enzyme capable of degrading sulfated fucan originating in a brown alga of Fucales which is useful in sugar chain engineering; a process for producing this enzyme; an oligosaccharide obtained by treating sulfated fucan with the enzyme; and production thereof.
    Type: Application
    Filed: January 17, 2003
    Publication date: November 17, 2005
    Applicant: TAKARA BIO INC
    Inventors: Takeshi Sakai, Hitomi Amarume, Katsushige Ikai, Ikunoshin Kato
  • Video display device and color temperature correction method for the same
    Publication number: 20050248688
    Abstract: A video display device that allows the color temperature of the signals in white color attributes having high luminance and low chroma saturation to be corrected with high precision is provided together with the color temperature correction method for the same so as to visually obtain a desirable white color on display.
    Type: Application
    Filed: July 7, 2005
    Publication date: November 10, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Katsunobu Kimura, Takaaki Matono, Haruki Takata, Takeshi Sakai, Wataru Kato
  • Video display device and color temperature correction method for the same
    Publication number: 20050219420
    Abstract: A video display device that allows the color temperature of the signals in white color attributes having high luminance and low chroma saturation to be corrected with high precision is provided together with the color temperature correction method for the same so as to visually obtain a desirable white color on display.
    Type: Application
    Filed: January 19, 2005
    Publication date: October 6, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Katsunobu Kimura, Takaaki Matono, Haruki Takata, Takeshi Sakai, Wataru Kato
  • Sulfated fucogalactan digesting enzyme gene
    Publication number: 20050202425
    Abstract: A gene encoding a polypeptide having an activity of digesting sulfated fucogalactan which is useful in sugar chain engineering reagents, analyzing the structures of sulfated fucose-containing polysaccharides and preparing degraded products of the polysaccharides; a genetic engineering process for producing the polypeptide; and the polypeptide obtained by the process.
    Type: Application
    Filed: September 5, 2002
    Publication date: September 15, 2005
    Inventors: Harumi Ueno, Jun Tomono, Hiroaki Sagawa, Takeshi Sakai, Ikunoshin Kato
  • Rotary machine
    Publication number: 20050194857
    Abstract: A rotary machine comprising a stator 2 composed of a stator iron core 3 having a plurality of slots formed in the direction of the rotation axis and stator windings inserted into the plurality of slots, wherein the stator windings are composed of a plurality of conductors 4 respectively inserted into the plurality of slots in the direction of the rotation axis and the stator 2 has a connection ring 1 having slots 13 into which the plurality of conductors 4 are inserted in the direction of the rotation axis.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 8, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Yoshimi Mori, Toshiaki Ueda, Takeshi Sakai, Yasuhiko Kimura, Shin Onose, Hiroshi Kanazawa, Masahiko Honma