Patents by Inventor Akihiro Takahashi

Akihiro 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: 6567114
    Abstract: A video-signal processing device connectable to an electronic endoscope capable of outputting a component-type electric analog color video signal. An analog-to-digital converter converts video-signal components of the component-type video signal into parallel digital color video-signal components. A color-conversion digital matrix circuit produces a parallel digital luminance signal-component, and two kinds of parallel digital color-difference signal-components based on the parallel digital color video-signal-components. A parallel-to-serial converter converts the luminance signal-component and digital color-difference signal-components into serial digital color video-signal-components. The electric analog video signal outputted from the electronic endoscope is fed outside the device as the serial electric digital video signal.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: May 20, 2003
    Assignee: Pentax Corporation
    Inventors: Akihiro Takahashi, Kouhei Iketani
  • Patent number: 6466256
    Abstract: A video-signal processing device is connectable to an electronic endoscope designed to output at least one kind of electric analog video signal, and comprises: an analog-to-digital converter for converting the electric analog video signal into a parallel electric digital video signal; and a parallel-to-serial converter for converting the parallel electric digital video signal into a serial electric digital video signal, whereby the electric analog video signal outputted from the electronic endoscope is fed outside from said device as the serial electric digital video signal.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: October 15, 2002
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Akihiro Takahashi, Kouhei Iketani
  • Publication number: 20020145661
    Abstract: A video-signal processing device connectable to an electronic endoscope capable of outputting a component-type electric analog color video signal. An analog-to-digital converter converts video-signal components of the component-type video signal into parallel digital color video-signal components. A color-conversion digital matrix circuit produces a parallel digital luminance signal-component, and two kinds of parallel digital color-difference signal-components based on the parallel digital color video-signal-components. A parallel-to-serial converter converts the luminance signal-component and digital color-difference signal-components into serial digital color video-signal-components. The electric analog video signal outputted from the electronic endoscope is fed outside the device as the serial electric digital video signal.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 10, 2002
    Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Akihiro Takahashi, Kouhei Iketani
  • Publication number: 20020118388
    Abstract: A data transmission apparatus transmits, in response to a permission signal received from a higher-level data receiver, a required amount of data to the data receiver in a burst. The required amount of data is determined by data transmission control. Data transmission between the apparatus and the data receiver is effected at a preselected timing in such a manner as to absorb a difference between the amount of data to be transmitted over a preselected management time period and the data amount indicated by an expected control value. For this purpose, the apparatus calculates an adequate amount of data to be transmitted over the management time period as a unit amount. The apparatus then manages the maximum amount of data to be transmitted over the management time period for thereby leveling the amounts of data transmitted. This successfully enhances accurate data transmission.
    Type: Application
    Filed: January 24, 2002
    Publication date: August 29, 2002
    Inventors: Takeshi Honda, Akihiro Takahashi
  • Patent number: 6420034
    Abstract: The present invention provides, in the preparation of a hot press molded board from a lignocellulose or an inorganic material as a main raw material, an isocyanate-based binder composition with which a board having eternally good releasability from a hot press plate, excellent physical properties and a low hygroscopic linear expansion coefficient can be obtained with improved productivity. The binder composition comprises (A) a compound having at least two isocyanate groups, (B) a low molecular weight polyethylene and (C) water as indispensable components.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: July 16, 2002
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Akihiro Takahashi, Masaki Sugawara, Takeshi Ito, Hisashi Hokonohara, Hideki Todoroki, Hiroaki Sakaguchi
  • Patent number: 6337550
    Abstract: A submergence detection sensor installed in a vehicle, having a control circuit board mounted on the vehicle for controlling the operation of a power window which is opened/closed by an electric motor. A pair of pad-like electrodes are installed on the control circuit board which are electrically conductive upon entry of water to generate a leak current therebetween and a submergence detection circuit is connected to one of the electrodes to receive the leak current and to compare with a threshold value to discriminate whether the vehicle submerges into water. A slot is provided in a gap between the electrodes which penetrates the control circuit board such that water present at the gap is discharged from the control circuit board, thereby enabling to effect submergence detection when the vehicle, in fact, submerges in water, while without making false detections owing to water condensation on the control circuit board or migration occurring therein.
    Type: Grant
    Filed: January 13, 2000
    Date of Patent: January 8, 2002
    Assignee: Keihin Corporation
    Inventors: Akihiro Takahashi, Yoshinobu Kirino
  • Publication number: 20010051763
    Abstract: A light source device comprises an aperture mechanism having a pair of aperture blades in an optical path formed between a light source and an incident end surface of a light guide on which an illuminating light is made incident. The first and second aperture blades are rotated, in a plane perpendicular to the optical axis of the optical path, about a movable shaft, which is parallel to the optical axis. The first and second aperture blades shade the luminous flux of the illuminating light, to adjust the amount of illuminating light, from the outer peripheries of the section of the luminous flux. A protruding plate is formed on an inside periphery of the first aperture blade. When the first aperture blade closes a half of the section, the protruding plate shades a swinging region above the center of the section of the luminous flux.
    Type: Application
    Filed: May 30, 2001
    Publication date: December 13, 2001
    Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA
    Inventors: Hidehito Kurosawa, Akihiro Takahashi
  • Patent number: 6268310
    Abstract: The present invention is directed to oxazole derivatives represented by the formula [I]; wherein A represents a nitrogen atom or a R3-substituted carbon atom; B represents a nitrogen atom, or an unsubstituted or X-substituted carbon atom; Z represents an oxygen atom, sulfinyl or sulfonyl; R1 and R2 represent each independently hydrogen, C1-C6 alkyl, C1-C6 alkoxy, C1-C6 haloalkoxy, C1-C6 haloalkyl or the like; R3 represents hydrogen, C1-C6 alkyl, halogen, nitro, formyl or acyl; X represents hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C2-C6 alkenyl, C3-C6 alkynyl, C1-C6 haloalkyl or the like; Y represents hydrogen, C1-C6 alkyl, C3-C7 cycloalkyl, C2-C6 alkenyl, C3-C6 alkynyl, C1-C6 haloalkyl or the like; m represents an integar of 1 or 2, and n represents an integar of 1, 2, 3 or 4, and the salts thereof. The compounds specified in the present invention have an excellent herbicidal activity and are useful as an active ingredients for herbicides.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: July 31, 2001
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Akiyoshi Ueda, Yasuyuki Miyazawa, Yoshihiko Hara, Masami Koguchi, Akihiro Takahashi, Takashi Kawana
  • Patent number: 6245716
    Abstract: Compounds represented by general formula (1) and a herbicide containing any of the compounds as the active ingredient, wherein R1, R2, and R3 each independently represents halogeno, C1-6 allyl, etc.; R4 and R5 each independently represents hydrogen, C1-6 alkyl, etc.; and Het represents either an isoxazole group optionally substituted by C1-4 alkyl or a derivative of the group.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: June 12, 2001
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Katsunori Tanaka, Hiroyuki Adachi, Masami Koguchi, Akihiro Takahashi
  • Patent number: 6215517
    Abstract: Disclosed is an electronic endoscope system which includes an endoscope unit having a solid-state imaging element which captures an image of an object and outputs an image signal, and a signal processing unit which receives the image signal from the imaging element and generates a plurality of digital video signals having different signal formats. The signal processing unit may have a plurality of signal output ports for outputting the plurality of digital video signals having different signal formats, respectively. Alternatively or optionally, the signal processing unit may have at least one signal selector which selects one of the plurality of digital video signals having different signal formats, and at least one output port through which the one of the plurality of digital video signal selected by the signal selector is output.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: April 10, 2001
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Akihiro Takahashi, Kohei Iketani
  • Patent number: 6181368
    Abstract: An electronic endoscope having a solid state image pickup device supplies an image signal which is converted into a digital signal and subject to a gamma correction in a gamma correcting portion in accordance with gamma correcting data stored in and read from a look-up table. The look-up table stores only data necessary for the gamma correction with respect to the image signal, so that data for the gamma correction is added to the image signal in the gamma correcting portion to output a gamma-corrected signal.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: January 30, 2001
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Akihiro Takahashi, Kohei Iketani, Hideo Sugimoto
  • Patent number: 6147031
    Abstract: A compound represented by the general formula [I] ##STR1## (wherein R.sup.1 is a C.sub.1 -C.sub.6 alkyl group; R.sup.2 is a C.sub.1 -C.sub.6 alkylsulfonyl group and the like; R.sup.3 and R.sup.4 are each independently hydrogen or a C.sub.1 -C.sub. 6 alkyl group; R.sup.5 is hydrogen or a benzyl group or the like; R.sup.7, R.sup.8, R.sup.9 and R.sup.10 are each independently hydrogen or a C.sub.1 -C.sub.6 alkyl group.) or a herbicide containing a salt thereof, intermediate preparing therefor, and the said compound.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: November 14, 2000
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Hiroyuki Adachi, Katsunori Tanaka, Akihiro Takahashi, Masami Koguchi
  • Patent number: 6107251
    Abstract: The present invention is directed to oxazole derivatives represented by the formula [I]; ##STR1## wherein A represents a nitrogen atom or a R.sub.3 -substituted carbon atom;B represents a nitrogen atom, or an unsubstituted or X-substituted carbon atom;Z represents an oxygen atom, sulfinyl or sulfonyl;R.sub.1 and R.sub.2 represent each independently hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 haloalkoxy, C.sub.1 -C.sub.6 haloalkyl or the like;R.sub.3 represents hydrogen, C.sub.1 -C.sub.6 alkyl, halogen, nitro, formyl or acyl;X represents hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.6 haloalkyl or the like;Y represents hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.6 haloalkyl or the like;m represents an integer of 1 or 2, andn represents an integar of 1, 2, 3 or 4, and the salts thereof.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: August 22, 2000
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Akiyoshi Ueda, Yasuyuki Miyazawa, Yoshihiko Hara, Masami Koguchi, Akihiro Takahashi, Takashi Kawana
  • Patent number: 6100421
    Abstract: The present invention is directed to a benzoic acid derivative methyl 3-formyl-4-methanesulfonyl-2-methylbenzoate. The compound is useful as a starting material for herbicide manufacture.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: August 8, 2000
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Hiroyuki Adachi, Masao Yamaguchi, Takahiro Sagae, Masami Koguchi, Kazuyuki Tomita, Takashi Kawana, Akihiro Takahashi
  • Patent number: 6011921
    Abstract: A communication control apparatus includes a master communication control unit for performing communication control for a plurality of slave units, and an intermediate communication control unit which performs the communication control for each slave unit instead of the master communication control unit. The intermediate communication control unit includes a memory section for holding transmission data necessary for slave unit communication processing and response data, which is a response to the transmission data, a transmission/reception section for sending the transmission data and for receiving the response data, and a communication processing control section.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: January 4, 2000
    Assignee: Fujitsu Limited
    Inventors: Akihiro Takahashi, Takumi Iwai, Kenji Fukunaga, Shinichi Hara, Shuichi Nakagawa
  • Patent number: 5962685
    Abstract: The present invention is directed to oxazole derivatives represented by the formula ?I!; ##STR1## wherein A represents a nitrogen atom or a R.sub.3 -substituted carbon atom; B represents a nitrogen atom, or an unsubstituted or X-substituted carbon atom; Z represents an oxygen atom, sulfinyl or sulfonyl; R.sub.1 and R.sub.2 represent each independently hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 haloalkoxy, C.sub.1 -C.sub.6 haloalkyl or the like; R.sub.3 represents hydrogen, C.sub.1 -C.sub.6 alkyl, halogen, nitro, formyl or acyl; X represents hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.6 haloalkyl or the like; Y represents hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.3 -C.sub.6 alkynyl, C.sub.1 -C.sub.6 haloalkyl or the like; m represents an integar of 1 or 2, and n represents an integar of 1, 2, 3 or 4, and the salts thereof.
    Type: Grant
    Filed: January 28, 1997
    Date of Patent: October 5, 1999
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Akiyoshi Ueda, Yasuyuki Miyazawa, Yoshihiko Hara, Masami Koguchi, Akihiro Takahashi, Takashi Kawana
  • Patent number: 5950591
    Abstract: According to the present invention, there is provided an engine oil deterioration preventing agent comprising, an addition agent for preventing a deterioration of an engine oil, and a housing body for housing the addition agent therein to discharge the addition agent to the engine oil when the engine oil is deteriorated.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: September 14, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuji Kageyama, Akihiro Takahashi, Yukio Kinugasa
  • Patent number: 5939360
    Abstract: The present invention is directed to a compound of formula ?I!: ##STR1## or a salt thereof in which R.sub.1 is a a C.sub.1-6 alkyl group, R.sup.2 is a halogen atom, a C.sub.1-6 alkylthio group, a C.sub.1-6 alkylsulfinyl group or a C.sub.1-6 alkylsulfonyl group, R.sup.3 and R.sup.4 are each independently hydrogen, a C.sub.1-6 alkyl group or a C.sub.1-6 haloalkyl group, and R is hydrogen or a C.sub.1-6 alkyl group. The present invention is further directed to a compound of formula ?1! or a salt thereof, as described above and in which R.sup.1 and R.sup.3 are methyl, R.sup.2 is chlorine or methylsulfonyl, R.sup.4 is hydrogen, and R is methyl or ethyl. In addition, the present invention is directed to a herbicidal composition, characterized in that it contains as active agent one or more compounds of formula ?I! or salt thereof in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 are as described above.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: August 17, 1999
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Hiroyuki Adachi, Masao Yamaguchi, Masami Koguchi, Akihiro Takahashi, Takashi Kawana, Katsunori Tanaka, Osamu Miyahara
  • Patent number: 5929899
    Abstract: An electronic endoscope in which images of an object to be viewed are picked-up in a field-sequential system by a solid-state image pickup device. The electronic endoscope includes a primary converter for converting different color image signals picked-up by the solid-state image pickup device and successively output therefrom, into digital image signals. A single memory temporarily stores the digital image signals in a point-sequential system. A secondary converter converts the digital image signals successively read from the single memory, into analog image signals. A delay delays a part or all of the analog image signals by different delay times to synchronize the color image signals.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: July 27, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Akihiro Takahashi, Kohei Iketani
  • Patent number: 5902230
    Abstract: An electronic endoscope system which includes a device for detecting an image, and a device for inputting an information signal. The image detecting device outputs an electrical image signal, which is converted to an analog video signal and a digital video signal. The digital video signal is combined with the information signal by an image combining device, to form a digital information signal. The digital information signal is serially outputted to a device which displays the image data in accordance with the outputted serial digital information signal. The digital information signal is also serially outputted to a device which reproduces the information signal in accordance with the outputted serial digital information signal.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: May 11, 1999
    Assignee: Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Akihiro Takahashi, Kohei Iketani