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: 5012228Abstract: 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: GrantFiled: July 10, 1990Date of Patent: April 30, 1991Assignee: Nippon Telegraph and TelephoneInventors: Kiyoshi Masuda, Shigeto Kohda, Shigenobu Sakai, Kazuo Kimura, Tomoyoshi Nomura
-
Patent number: 4983026Abstract: 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: GrantFiled: December 22, 1987Date of Patent: January 8, 1991Assignee: Minolta Camera Kabushiki KaishaInventors: Yoshinobu Kudo, Kazuo Kimura
-
Patent number: 4892398Abstract: 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: GrantFiled: November 17, 1988Date of Patent: January 9, 1990Assignee: Minolta Camera Kabushiki KaishaInventors: Yoshinobu Kudo, Akira Fukushima, Kazuo Kimura, Mitsuko Date
-
Patent number: 4843227Abstract: 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: GrantFiled: September 11, 1987Date of Patent: June 27, 1989Assignee: Minolta Camera Kabushiki KaishaInventors: Toru Matsui, Kazuo Kimura
-
Patent number: 4798765Abstract: 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: GrantFiled: March 25, 1986Date of Patent: January 17, 1989Assignee: Victor Company of Japan Ltd.Inventors: Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura, Eiichiro Imaoka
-
Patent number: 4792486Abstract: 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: GrantFiled: April 4, 1988Date of Patent: December 20, 1988Assignee: Victor Company of Japan, Ltd.Inventors: Yasuo Ishizaka, Noboru Watanabe, Kazuo Kimura, Eiichiro Imaoka
-
Patent number: 4787724Abstract: 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: GrantFiled: February 6, 1987Date of Patent: November 29, 1988Assignee: Minolta Camera Kabushiki KaishaInventors: Yoshinobu Kudo, Akira Fukushima, Kazuo Kimura
-
Patent number: 4777309Abstract: 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: GrantFiled: September 29, 1987Date of Patent: October 11, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Kazuo Kimura, Masahiro Usui, Fujio Masuko
-
Patent number: 4763997Abstract: 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: GrantFiled: October 2, 1986Date of Patent: August 16, 1988Assignee: Minolta Camera Kabushiki KaishaInventors: Kazuo Kimura, Taro Shibuya
-
Patent number: 4755596Abstract: Disclosed are optically active acylated cephalosporin analogs which are useful as antibacterial agents and methods for preparing such compounds.Type: GrantFiled: October 21, 1986Date of Patent: July 5, 1988Assignee: Kyowa Hakko Kogyo Co., Ltd.Inventors: Tadashi Hirata, Yukio Hashimoto, Takehiro Ogasa, Shigeru Kobayashi, Ikuo Matsukuma, Kazuo Kimura
-
Patent number: 4745510Abstract: 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: GrantFiled: February 28, 1986Date of Patent: May 17, 1988Assignee: Victor Company of Japan, Ltd.Inventors: Noboru Watanabe, Yasuo Ishizaka, Kazuo Kimura, Eiichiro Imaoka
-
Patent number: 4731300Abstract: 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: GrantFiled: February 26, 1986Date of Patent: March 15, 1988Assignee: Victor Company of Japan, Ltd.Inventors: Noboru Watanabe, Yasuo Ishizaka, Kazuo Kimura, Eiichiro Imaoka
-
Patent number: 4726654Abstract: 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: GrantFiled: November 17, 1986Date of Patent: February 23, 1988Assignee: Minolta Camera Kabushiki KaishaInventors: Kazuo Kimura, Shizuyo Morikage
-
Patent number: 4727204Abstract: 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: GrantFiled: December 18, 1986Date of Patent: February 23, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Gohfu Suzukamo, Masami Fukao, Fujio Masuko, Masahiro Usui, Kazuo Kimura
-
Patent number: 4708696Abstract: 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: GrantFiled: June 11, 1986Date of Patent: November 24, 1987Assignee: Tsubakimoto Chain Co.Inventors: Kazuo Kimura, Masao Maruyama
-
Patent number: 4697878Abstract: 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: GrantFiled: February 28, 1985Date of Patent: October 6, 1987Assignee: Minolta Camera Kabushiki KaishaInventors: Kazuo Kimura, Tetsuyuki Tanimoto, Hiroshi Kobayashi
-
Patent number: 4664061Abstract: 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: GrantFiled: October 24, 1985Date of Patent: May 12, 1987Assignees: Taikisha Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Koji Morioka, Hideaki Tojo, Kazuo Kimura, Susumu Yoshida
-
Patent number: 4650293Abstract: 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: GrantFiled: October 11, 1985Date of Patent: March 17, 1987Assignee: Minolta Camera Kabushiki KaishaInventors: Kazuo Kimura, Taro Shibuya
-
Patent number: 4620507Abstract: 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: GrantFiled: March 1, 1982Date of Patent: November 4, 1986Inventors: Hiromichi Saito, Hiroto Arata, Kazuo Kimura, Kazuo Fujisawa, Fumihiro Yamamoto
-
Patent number: 4595964Abstract: 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: GrantFiled: January 26, 1983Date of Patent: June 17, 1986Assignee: Victor Company of Japan, LimitedInventors: Kazuo Kimura, Kunihide Sakai, Chikara Inoue, Hiroyuki Hayashi, Toyoaki Takayasu, Yasuhiro Ayabe, Kayoko Miyake