Patents by Inventor Kazuo Kimura

Kazuo Kimura 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: 5012228
    Abstract: An active matrix type display device is disclosed having an m number of unit pixel array blocks repetitively arranged in a row direction. Each pixel array block comprises a k rows.times.n columns matrix of display elements (Cij, i=1, 2, . . . n, j=1, 2, . . . n) and scanning lines G1 . . . Gn and data signal lines D1 . . . Dn are arranged in an intersecting fashion with first and second switching elements of each display element connected to the corresponding lines in a manner to provide different data input routes.
    Type: Grant
    Filed: July 10, 1990
    Date of Patent: April 30, 1991
    Assignee: Nippon Telegraph and Telephone
    Inventors: Kiyoshi Masuda, Shigeto Kohda, Shigenobu Sakai, Kazuo Kimura, Tomoyoshi Nomura
  • Patent number: 4983026
    Abstract: The present invention provides a focal length changeable lens system which comprises a master lens group of a positive refractive power having at least one negative lens element made of a synthetic resin material; and a rear conversion lens group of a negative refractive power retractably arranged on the image side of the master lens group and having at least one positive lens element made of a synthetic resin material, in order to well compensate the change of back focal length of the lens system due to the change in temperature thereof without increasing the cost of the lens system.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: January 8, 1991
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Yoshinobu Kudo, Kazuo Kimura
  • Patent number: 4892398
    Abstract: In a triplet type objective for a compact lens shutter camera with a diaphragm arranged behind the lens system, the first and the second lens elements are formed of plastic and the third lens element is formed of glass, so that it is advantageous in manufacturing cost and weight. Therefore, an F No. of the objective is small and aberrations, for example astigmatic difference, are corrected well.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: January 9, 1990
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Yoshinobu Kudo, Akira Fukushima, Kazuo Kimura, Mitsuko Date
  • Patent number: 4843227
    Abstract: A focus adjusting system is provided with both a passive AF capability wherein ambient light is utilized and an active AF capability wherein an LED element for projecting light off the optical axis of a photo-taking lens and light reflected from an object after having been projected by the LED element are utilized. The focus detecting apparatus includes a secondary image forming element and an aperture opening disposed in the vicinity of the secondary image forming element. The aperture opening is symmetrically positioned relative to the optical axis of the photo-taking lens and lies on a straight line which contains the optical axis of the photo-taking lens and which is perpendicular to a straight line connecting the optical axis of the photo-taking lens and a projecting light optical axis. The aperture opening has a pair of inner regions and a pair of outer regions. A first cut-off filter having a property of cutting off rays of light of a wave-length projected from the LED element is provided.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: June 27, 1989
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Toru Matsui, Kazuo Kimura
  • Patent number: 4798765
    Abstract: A perpendicular magnetic recording medium comprises a recording medium base, a lower layer formed on the recording medium base, and an upper layer formed on the lower layer. The lower layer is made of a first material including cobalt, chromium and one or more elements other than cobalt and chromium. On the other hand, the upper layer is made of a second material including cobalt, chromium and one or more elements other than cobalt and chromium. A quantity of the one or more elements added to cobalt and chromium making up the second material is less than a quantity of the one or more elements added to cobalt and chromium making up the first material.
    Type: Grant
    Filed: March 25, 1986
    Date of Patent: January 17, 1989
    Assignee: Victor Company of Japan Ltd.
    Inventors: Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura, Eiichiro Imaoka
  • Patent number: 4792486
    Abstract: A perpendicular magnetic recording medium comprises a recording medium base, a lower layer formed on the recording medium base, and an upper layer formed on the lower layer. The upper layer is made of cobalt-chromium, and the lower layer at least includes cobalt and chromium.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: December 20, 1988
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura, Eiichiro Imaoka
  • Patent number: 4787724
    Abstract: In a triplet type objective for a compact lens shutter camera with a diaphragm arranged behind the lens system, the first lens element is formed of glass and the second and third lens elements are formed of plastic, so that it is advantageous in manufacturing cost and weight. Furthermore, sufficient marginal light rays and flatness of the image field can be obtained.
    Type: Grant
    Filed: February 6, 1987
    Date of Patent: November 29, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Yoshinobu Kudo, Akira Fukushima, Kazuo Kimura
  • Patent number: 4777309
    Abstract: A continuous process for producing 5-vinyl-2-norbornene, useful as the raw material of 5-ethylidene-2-norbornene used as a termonomer for EPDM, from a mixture of cyclopentadiene and butadiene or from a mixture of cyclopentadiene and dicyclopentadiene and butadiene by the Diels-Alder reaction which process comprises adding from 10 to 10,000 ppm of N,N-diethylhydroxylamine or 4-oxo-2,2,6,6-tetramethylpiperidine-1-oxyl relative to the total weight of cyclopentadiene and butadiene or of a mixture of cyclopentadiene and dicyclopentadiene and butadiene, continuously introducing the resulting mixture into a pressure reaction vessel, allowing them to react in the absence of any gas phase portion within the said pressure reaction vessel, and continuously withdrawing the reaction product.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: October 11, 1988
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazuo Kimura, Masahiro Usui, Fujio Masuko
  • Patent number: 4763997
    Abstract: The present invention provides a viewfinder optical system of inverted Galilean type which has a great magnification relative to the diameter of the objective lens without increasing the number of parts. The viewfinder optical system consists of, from the object side to the eye side, an objective lens component having a negative refractive power and an eyepiece lens component having a positive refractive power. The eyepiece lens component has a convex surface at the eye side. The viewfinder optical system fulfills the following conditions:0.4L<d.sub.3 <0.85L-1.4<L/R.sub.4 <-0.8 R.sub.4 <00.35<.vertline.R.sub.2 /R.sub.4 .vertline.<0.65wherein:L represents the total length of the whole viewfinder optical system;d.sub.3 represents the axial thickness of the eyepiece lens component;R.sub.2 represents the radius of curvature of the eye side surface of the objective lens component; andR.sub.4 represents the radius of curvature of the eye side surface of the eyepiece lens component.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: August 16, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kazuo Kimura, Taro Shibuya
  • Patent number: 4755596
    Abstract: Disclosed are optically active acylated cephalosporin analogs which are useful as antibacterial agents and methods for preparing such compounds.
    Type: Grant
    Filed: October 21, 1986
    Date of Patent: July 5, 1988
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Tadashi Hirata, Yukio Hashimoto, Takehiro Ogasa, Shigeru Kobayashi, Ikuo Matsukuma, Kazuo Kimura
  • Patent number: 4745510
    Abstract: A perpendicular magnetic recording and reproducing system records and reproduces a signal on and from a perpendicular magnetic recording medium comprising a magnetic layer which is made from one magnetic material and is constituted by a layer having a low coercivity and a layer having a high coercivity on top of the layer having the low coercivity, by use of a ring core head and utilizes the layer having the low coercivity as a high permeability layer and the layer having the high coercivity as a perpendicular magnetization layer.
    Type: Grant
    Filed: February 28, 1986
    Date of Patent: May 17, 1988
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Noboru Watanabe, Yasuo Ishizaka, Kazuo Kimura, Eiichiro Imaoka
  • Patent number: 4731300
    Abstract: A perpendicular magnetic recording medium comprises a recording medium base, a low coercivity layer formed on the recording medium base and having a low coercivity in an in-plane direction thereof, and a high coercivity layer formed on the low coercivity layer and having a high coercivity in a direction perpendicular to a surface of the low coercivity layer. The low coercivity layer and the high coercivity layer are formed from the same magnetic material and constitute a magnetic layer. A method of manufacturing this perpendicular magnetic recording medium comprises a single magnetic layer forming process of successively and continuously forming the low coercivity layer and the high coercivity layer on the recording medium base by using the same magnetic material as a depositing material.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: March 15, 1988
    Assignee: Victor Company of Japan, Ltd.
    Inventors: Noboru Watanabe, Yasuo Ishizaka, Kazuo Kimura, Eiichiro Imaoka
  • Patent number: 4726654
    Abstract: A multi-layered anti-reflection coating is provided having six or seven layers. The design can be defined by the following parameters:______________________________________ N.sub.1 < 1.5 N.sub.1 d.sub.1 = 0.25.lambda..sub.0 N.sub.2 > 1.8 0.11.lambda..sub.0 < N.sub.2 d.sub.2 < 0.19.lambda..sub.0 N.sub.3 < 1.7 0.02.lambda..sub.0 < N.sub.3 d.sub.3 < 0.08.lambda..sub.0 N.sub.4 > 1.8 0.12.lambda..sub.0 < N.sub.4 d.sub.4 < 0.23.lambda..sub.0 N.sub.5 > 1.5 0.28.lambda..sub.0 < N.sub.5 d.sub.5 < 0.36.lambda..sub.0 N.sub.6 < 1.5 0.04.lambda..sub.0 < N.sub.6 d.sub.6 < 0.14.lambda..sub.0 N.sub.7 > 1.5 0 .ltoreq. N.sub.7 d.sub.7 < 0.55.lambda..sub.0 N.sub.4 > N.sub.5 > N.sub.6 ______________________________________wherein N refers to the refractive index, d refers to the physical thickness with their respective subnumbers referring to the layer, with the first layer being the layer furthest from the substrate, and .lambda..sub.
    Type: Grant
    Filed: November 17, 1986
    Date of Patent: February 23, 1988
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kazuo Kimura, Shizuyo Morikage
  • Patent number: 4727204
    Abstract: 5-Ethylidene-2-norbornene with high quality is effectively prepared by isomerization 5-vinyl-2-norbornene containing 1 ppm to 0.5% by weight of 4-vinylcyclohexene in the presence of at least one catalyst selected from the group consisting of a solid base catalyst which is prepared by reacting alumina, an alkali metal hydroxide and an alkali metal in a temperature range of 200.degree. to 500.degree. C. and a solid base catalyst which is prepared by reacting water-containing alumina and an alkali metal in such an amount that exceeds a molar equivalent of water contained in alumina at a temperature in a range between a melting point of the alkali metal and 500.degree. C. in an inert gas atmosphere.
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: February 23, 1988
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Gohfu Suzukamo, Masami Fukao, Fujio Masuko, Masahiro Usui, Kazuo Kimura
  • Patent number: 4708696
    Abstract: A tensioner for toothed belts comprises a hydraulic fluid filled cylinder having a piston with a rod projecting out of the cylinder and engaging a pivoted arm with a roller at one end for engaging the belt. A spring within the cylinder urges the rod in the projecting direction, and a check valve carried by the piston allows the rod to project rapidly to take up slack in the belt. Hydraulic fluid, however, flows through the small clearance between the piston and the cylinder wall as the rod retracts, and therefore limits the rate of retraction. A path is provided between seals surrounding the rod to route air directly to the reservoir so that it does not enter the fluid chambers within the cylinder. The piston material is chosen to expand more rapidly than the cylinder with increasing temperatures to reduce variations in leak-down time.
    Type: Grant
    Filed: June 11, 1986
    Date of Patent: November 24, 1987
    Assignee: Tsubakimoto Chain Co.
    Inventors: Kazuo Kimura, Masao Maruyama
  • Patent number: 4697878
    Abstract: There is disclosed a bi-level focusing plate of phase grating type in which micro unit patterns, each of which is comprised of one or more projections and one or more recessions, are arranged regularly and repeatedly at a pitch of 10 to 30 .mu.m. The phase difference between each of projections and each of recessions is set at .pi. radian against a light having a wavelength of 400 to 700 nm and the ratio in area of total area of projections or recessions in one unit pattern to the area of said one unit pattern is set so as to fall into a range of 0.3 to 0.5. The focusing plate is characterized in that the boundaries in each unit pattern each defined between the projection and the recession adjacent to each other therein are comprised of straight-lined portions and curved portions.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: October 6, 1987
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kazuo Kimura, Tetsuyuki Tanimoto, Hiroshi Kobayashi
  • Patent number: 4664061
    Abstract: A spraying booth comprising a spraying area defined by a ceiling and side walls. The ceiling includes top feed openings connected with a feed duct extending from a conditioner for controlling a fresh air temperature. The side walls include side feed openings connected with a blast duct for supplying air from which paint mist has been removed at mist removing devices. Fresh air supplied through the top feed openings and the mistless air supplied through the side feed openings combine to produce an advantageous atmospheric condition for a paint spraying operation.
    Type: Grant
    Filed: October 24, 1985
    Date of Patent: May 12, 1987
    Assignees: Taikisha Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Koji Morioka, Hideaki Tojo, Kazuo Kimura, Susumu Yoshida
  • Patent number: 4650293
    Abstract: An albada finder optical system of inverted Galilean type, comprising from the object side to the eye side: an objective lens component of a negative refractive power; and an eyepiece lens component of a positive refractive power having a reflecting surface at the object side.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: March 17, 1987
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kazuo Kimura, Taro Shibuya
  • Patent number: 4620507
    Abstract: A cast steel stave cooler comprising a carbon steel cooling pipe having a roughened surface and having a coating thereon, and a cast steel embedding the cooling pipe therein. The cast steel contains 10 to 25% Cr and has a very reduced liquid-solid zone so as to prevent fusion of the cooling pipe during the casting. The cooling pipe is provided with fins which are integratedly welded to the cast steel.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: November 4, 1986
    Inventors: Hiromichi Saito, Hiroto Arata, Kazuo Kimura, Kazuo Fujisawa, Fumihiro Yamamoto
  • Patent number: 4595964
    Abstract: A magnetic head for tape recording and/or reproducing is composed of a pair of abutting thin magnetic metal cores with front and back gaps therebetween, and a pair of magnetic oxide cores sandwiching each of the magnetic metal cores therebetween. The magnetic oxide cores include bodies of glass disposed adjacent the front gap and sandwiching each magnetic metal core to allow the front gap to be visually checked for its depth. To fabricate such a magnetic head, magnetic oxide cores are bonded to a thin magnetic metal core, and the bonded block is cut off across the magnetic metal core to form two block pieces. Each of the block pieces is provided with bodies of glass in recesses formed in a cut surface thereof. After the cut surfaces have been ground, the block pieces are bonded with the cut surfaces confronting each other while keeping the magnetic metal cores in alignment.
    Type: Grant
    Filed: January 26, 1983
    Date of Patent: June 17, 1986
    Assignee: Victor Company of Japan, Limited
    Inventors: Kazuo Kimura, Kunihide Sakai, Chikara Inoue, Hiroyuki Hayashi, Toyoaki Takayasu, Yasuhiro Ayabe, Kayoko Miyake