Patents by Inventor Yukio Takahashi

Yukio 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: 5960697
    Abstract: An axial piston machine comprises first and second members arranged so that one of the first and second members is swingable relative to the other to provide relative swinging motion, a plurality of pistons inserted in a plurality of cylinders formed in the second member, respectively, the pistons being mechanically engaged with the first member so that the relative swinging motion reciprocates the plurality of pistons in the cylinders, and a swinging mechanism for swinging the above-mentioned one of the first and second members relative to the other, and the axial piston machine is characterized in that the first and second members have spherical portions providing a coupling portion binding one of the first and second members to a spherical point of the other to be universally rotatable about the point, and the above-mentioned swinging mechanism comprises a relative revolving mechanism for revolving at least one of the first and second members relative to the other to provide a relative swinging motion betw
    Type: Grant
    Filed: February 26, 1998
    Date of Patent: October 5, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Isao Hayase, Shunichi Mitsuya, Takeshi Tsuchiya, Yuzo Kadomukai, Yukio Takahashi
  • Patent number: 5928670
    Abstract: An intrinsic aldose reductase inhibitor is isolated and purified from mammalian cells, such as rat or human kidney cells. The intrinsic aldose reductase inhibitor may be incorporated into pharmaceutical compositions for the treatment of certain conditions related to diabetes.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: July 27, 1999
    Assignee: The Government of the United States of America as represented by the Secretary of the Department of Health and Human Services
    Inventors: Peter F. Kador, Yukio Takahashi, Tomoyuki Terada, Libaniel Rodriguez, Matteo Schaffhauser
  • Patent number: 5759232
    Abstract: A method of charging an iron scrap melting cupola with iron scrap and coke enables the iron scrap to be melted with high energy efficiency. The charging pipe feed is set at a level "h" which meets the condition of h .ltoreq. (r-r') tan .theta., and iron scrap of a quantity Ws meeting the condition of Ws .ltoreq. 1/3.multidot..pi.r.sup.3 .multidot.tan .theta..multidot..rho..sub.s is charged through the charging pipe, followed by charging of coke, wherein h represents the height of the charging feed above the material in the cupola (meters), r represents the inside radius of the cupola (meters), r' represents the inside radius of the charging pipe (meters), .theta. represents the angle of repose of the iron scrap (degrees), Ws represents the quantity of iron scrap per cycle (kg/ch), and .rho..sub.s represents the bulk specific gravity of the iron scrap (kg/m.sup.3).
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: June 2, 1998
    Assignee: Kawasaki Steel Corporation
    Inventors: Yukio Takahashi, Shuji Takeuchi, Nagayasu Bessho
  • Patent number: 5749829
    Abstract: An endoscope system in accordance with the present invention comprises: an endoscope having an insertional part, operation unit, and connector unit set in array, and including channels that communicate with an opening formed in the distal section of the insertional part and an opening formed in the operation unit or connector unit; and at least one cleaning instrument having a flexible tube that can be connected to the opening formed in the operation unit or connector unit of the endoscope and that has the overall length thereof set to 30 cm or larger.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: May 12, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Takeshi Yokoi, Takahiro Kishi, Tsutomu Ishiguro, Masaaki Nakazawa, Yukio Takahashi, Hideo Ito, Hisao Yabe, Satoshi Nakagawasai
  • Patent number: 5738878
    Abstract: An intrinsic aldose reductase inhibitor is isolated and purified from mammalian cells, such as rat or human kidney cells. The intrinsic aldose reductase inhibitor may be incorporated into pharmaceutical compositions for the treatment of certain conditions related to diabetes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 14, 1998
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Peter F. Kador, Yukio Takahashi, Tomoyuki Terada, Libaniel Rodriguez, Matteo Schaffhauser
  • Patent number: 5735793
    Abstract: An endoscope having a conduit-providing flexible tube and a device for connecting said flexible tube, said device comprising a coupling member that is provided on the outer circumference with a first tapered portion the outside diameter of which decreases toward at least one end of said coupling member and that has a conduit in the interior, an annular retaining member that is fitted over the outer circumference of one end portion of said flexible tube which is to be fitted over said first tapered portion and that has on the inner circumference a second tapered portion the inside diameter of which decreases toward said at least one end in such a way as to provide engagement with said first tapered portion, and a clamp member that depresses said retaining member in the axial direction in which said first tapered portion flares, thereby depressing said flexible tube to be secured to said coupling member, characterized by further having an urging and covering member that not only covers the outer circumferential
    Type: Grant
    Filed: July 11, 1996
    Date of Patent: April 7, 1998
    Assignee: Olympus Optical Co., Ltd.
    Inventors: Yukio Takahashi, Ichiro Nakamura, Masaaki Nakazawa, Hideo Ito, Hisao Yabe
  • Patent number: 5672826
    Abstract: The present invention provides a semiconductor pressure sensor having a glass base and a metal base bonded together satisfactorily so that a silicon diaphragm may not be affected by residual strain, and an intelligent differential pressure and pressure transmitting device employing the semiconductor pressure sensor.The semiconductor pressure sensor comprises a silicon diaphragm (1) provided with a strain-sensitive element, a glass or ceramic base (2) bonded to the silicon diaphragm (1), and a metal base (4) bonded to the glass or ceramic base (2) with a bonding glass (3). The thermal expansion coefficient of the metal base (4) at a temperature corresponding to the strain point of the bonding glass (3) is not greater than that of the glass or ceramic base (2).
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: September 30, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Suzuki, Ken Takahashi, Yukio Takahashi, Yoshimi Yamamoto, Kenichi Aoki, Tomoyuki Tobita
  • Patent number: 5626411
    Abstract: The present invention relates to a light ray shift element which provides controlled refraction of the incident ray and an optical axis displacement device using the above light ray shift element. An application of these optical devices to an interleave projection display system is demonstrated. The optical element is constructed from transparent flat plate materials containing a first optical medium and are disposed at a predetermined spacing along the optical axis. The orientation angle of the transparent flat plates with respect to the optical axis can be varied independently. A bulkhead consisting of the transparent flat plates and a second optical medium having an index of refraction different from the first optical medium, which is enclosed in a hermetic extendable seal, is utilized to provide light ray shift and optical axis displacement.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: May 6, 1997
    Assignee: Nippon Telegraph and Telephone Corportion
    Inventors: Yukio Takahashi, Tomoyoshi Nomura, Takayuki Okimura
  • Patent number: 5583694
    Abstract: The present invention relates to a light ray shift element which provides controlled refraction of the incident ray and an optical axis displacement device using the above light ray shift element. An application of these optical devices to an interleave projection display system is demonstrated. The optical element is constructed from transparent flat plate materials containing a first optical medium and are disposed at a predetermined spacing along the optical axis. The orientation angle of the transparent flat plates with respect to the optical axis can be varied independently. A bulkhead consisting of the transparent flat plates and a second optical medium having an index of refraction different from the first optical medium, which is enclosed in a hermetic extendable seal, is utilized to provide light ray shift and optical axis displacement.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: December 10, 1996
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Yukio Takahashi, Tomoyoshi Nomura, Takayuki Okimura
  • Patent number: 5560936
    Abstract: An intrinsic aldose reductase inhibitor is isolated and purified from mammalian cells, such as rat or human kidney cells. The intrinsic aldose reductase inhibitor may be incorporated into pharmaceutical compositions for the treatment of certain conditions related to diabetes.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: October 1, 1996
    Assignee: The United States of America as represented by the Department of Health and Human Services
    Inventors: Peter F. Kador, Yukio Takahashi, Tomoyuki Terada, Libaniel Rodriguez, Matteo Schaffhauser
  • Patent number: 5537882
    Abstract: A sensor for detecting physical amount in which a gauge resistance value is made not to change even when a wiring material presents a yield phenomenon by wiring a wiring material Such as aluminum presenting a yield phenomenon by thermal stress in a stress insensitive direction of a piezogauge.
    Type: Grant
    Filed: October 3, 1994
    Date of Patent: July 23, 1996
    Inventors: Seiichi Ugai, Satoshi Shimada, Susumu Murakami, Yoshimi Yamamoto, Yukio Takahashi, Yasuo Maruyama
  • Patent number: 5532736
    Abstract: A videocamera is disposed diagonally to the front of a display and the image of a subject is reflected toward the videocamera by a half-transparent mirror placed in front of the screen of the display. The half-transparent mirror has in its front inclined strip-like micro reflective surfaces and inclined strip-like micro transparent surfaces which emit therethrough incident light from the display screen. The angle between each micro transparent surface and a strip-like micro area formed on the back of the half-transparent mirror in opposing relation to the micro transparent surface is determined so that the half-transparent mirror has a light collecting or condensing effect.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: July 2, 1996
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Makoto Kuriki, Kazutake Uehira, Yukio Takahashi, Shigenobu Sakai
  • Patent number: 5460027
    Abstract: A clamp device for securing a bending press punch on its punch holder, the clamp device being capable of securing punches having a straight, or flat, contacting surface and those having a groove on the contacting surface. The clamp device comprises a plurality of spring members each secured about a bolt; an upper punch clamp plate member having a punch contacting surface; and a lower flanged punch clamp plate member having a punch contacting surface. The spring members provide the force necessary to return the upper punch clamp plate member to a position wherein a portion thereof is within the groove when the grooved punch is used. When the flat surface punch is utilized, the punch contacting surface portion of the lower punch clamp plate member and the punch contacting surface of the upper punch clamp plate member are positioned against the contacting surface of the punch thus providing solid surface contact when either punch design is utilized.
    Type: Grant
    Filed: August 29, 1994
    Date of Patent: October 24, 1995
    Assignee: Amada Engineering & Service Co., Inc.
    Inventor: Yukio Takahashi
  • Patent number: 5373333
    Abstract: An image of a text displayed on a flat display is reflected by a half mirror so that a speaker is allowed to see the reflected image in the direction in which he faces the audience. A document of the text to be displayed is prepared as character code data of a frame configuration, and a display controller controls the scroll or page updating of the display screen in accordance with a control instruction from a control panel.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: December 13, 1994
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Tadamichi Kawada, Hiroshi Nakanishi, Yukio Takahashi, Nobuhiro Funakoshi
  • Patent number: 5365766
    Abstract: A die assembly for use with a tool for bending flat metal stock, and including a pair of elongated plate members in the lower die member each having a surface to support a piece of flat metal stock, the plate members being pivotably connected and maintained approximately 180 degrees apart when a bending force is not applied to the metal stock. A surface of an expandable pressure container is positioned in contact with a plate support member, the pressure within the container being controlled in a manner such that the vertical position of the plate support member is fixed such that the plate members assume a selected angular orientation to enable the tool to form the desired bend in the metal stock.
    Type: Grant
    Filed: May 18, 1993
    Date of Patent: November 22, 1994
    Assignee: Amada Engineering & Service Co., Inc.
    Inventors: Yukio Takahashi, Etsuo Fukuda
  • Patent number: 5326849
    Abstract: A method for producing an aromatic poly(thio)ether ketone having repeating units of the following formula (II): ##STR1## wherein each of R.sup.1 to R.sup.12 is a hydrogen atom, a halogen atom, a hydrocarbon group or an alkoxy group, X is an oxygen atom or a sulfur atom, provided that part of X may be a direct bond, and n is an integer of from 0 to 2, which comprises reacting an aromatic (thio)ether carboxylic acid fluoride of the following formula (I): ##STR2## wherein R.sup.1 to R.sup.12, X and n are as defined above, under pressure in an aprotic organic solvent in the presence of boron trifluoride.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: July 5, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Yukio Takahashi, Norihiko Yoneda, Seiichi Nozawa
  • Patent number: 5231914
    Abstract: A variable displacement swash plate type compressor is suitable for use as a refrigerant compressor for automobile air conditioner. The compressor includes pistons, an oscillating member for driving the piston, a rotating member for oscillating the oscillating member, a plate member for imparting a rotational force to the rotating member, and a main shaft connected to the plate member. A member, having a spherical or cylindrical surface portion and a flat surface portion, is provided between the rotating member and the plate member in such a manner that it is slidably in contact with both of the rotating member and the plate member. Also, movement of the oscillating member is defined by contact of the oscillating member with a stationary member. Consequently, it is possible to provide a variable displacement swash plate type compressor which assures reliable capacity control at a high-speed rotation and which vibrates and wears less.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: August 3, 1993
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
    Inventors: Isao Hayase, Kenji Tojo, Kunihiko Takao, Yasushi Muramoto, Yukio Takahashi, Masaru Ito, Toshio Sudo, Takashi Yokoyama
  • Patent number: 5168270
    Abstract: An input analog image signal is sampled by first and second A/D converters, using first and second sampling clocks of the same period, to obtain digital gradation data. In the case of a double definition display mode, the first and second sampling clocks are made 180.degree. out of phase with each other and the output of the first A/D converter is delayed for one-half period, by which its timing is brought into agreement with that of the output of the second A/D converter, thus obtaining a pair of digital gradation data. In the case of a standard definition display mode, the first and second sampling clocks of the same phase are used to obtain the outputs of the first and second A/D converters as a pair of digital gradation data. The pair of digital gradation data Da and Db is converted by a signal processing part into a pair of analog gradation data Aa and Ab, which is subjected to a serial-to-parallel conversion by a source driver to be supplied in parallel to data lines.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: December 1, 1992
    Assignees: Nippon Telegraph and Telephone Corporation, Hosiden Corporation
    Inventors: Tadaaki Masumori, Tadamichi Kawada, Yukio Takahashi, Tadao Nakamura, Masaru Yasui, Takeo Kamiya
  • Patent number: 5105728
    Abstract: A variable-displacement compressor includes a wobble member for driving a pistons, and a rotation member for wobbling the wobbling member, a first support portion for supporting a wobbling member in such a manner that the angle of wobbling of the wobbling member is variable, and a second support portion for supporting said rotation member in such a manner that the angle of tilt of said rotation member relative to a main shaft is variable. With this construction, unbalanced inertia forces can be reduced greatly, thereby providing the variable-displacement compressor which produces less vibrations and noises.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: April 21, 1992
    Assignees: Hitachi, Ltd., Hitachi Automotive Engineering Co., Ltd.
    Inventors: Isao Hayase, Yasushi Muramoto, Kenji Tojo, Kunihiko Takao, Masaru Ito, Atsuo Kishi, Yukio Takahashi, Toshio Sudo, Takashi Yokoyama
  • Patent number: 5063829
    Abstract: A variable displacement swash plate type compressor operable with reduced vibration and noise and, hence, suitable for use in automotive air-conditioning refrigeration cycle has a main shaft adapted to be driven by a driving power source; a drive plate fixed to the main shaft; a swash plate main part tiltably engaging through an engaging portion with the drive plate so as to be tiltable with respect to the axis of the main shaft and to make a precessional rotation in accordance with the rotation of the main shaft; a piston support rotatably carried by the swash plate main part so as to make a precessional rotation together with the swash plate main part; pistons having one ends engaging with the piston support so as to reciprocatingly move in respective cylinders in accordance with the precessional rotation of the swash plate main part; and a mechanism for causing a change in the angle of tilt of the swash plate main part with respect to the axis of the main shaft so as to effect a control of displacement.
    Type: Grant
    Filed: August 7, 1990
    Date of Patent: November 12, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Kunihiko Takao, Kenji Tojo, Isao Hayase, Yukio Takahashi, Masaru Ito