Patents by Inventor Fumio Otsuka
Fumio Otsuka 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).
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Publication number: 20240105859Abstract: A Schottky barrier diode includes a semiconductor layer of a first conductivity type including a wide-bandgap semiconductor and a trench defining a mesa portion on a first surface thereof, a high-resistance region under the trench of the semiconductor layer, the high-resistance region including an impurity of a second conductivity type different from the first conductivity type, an insulating film or a semiconductor film of the second conductivity type, the insulating film or semiconductor film covering at least a bottom surface among inner surfaces of the trench, an anode electrode on the semiconductor layer through the insulating film or the semiconductor film, the anode electrode being connected to the mesa portion, and a cathode electrode directly or through another layer on a second surface of the semiconductor layer on the opposite side to the first surface.Type: ApplicationFiled: July 28, 2023Publication date: March 28, 2024Applicants: TAMURA CORPORATION, Novel Crystal Technology, Inc.Inventor: Fumio OTSUKA
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Patent number: 11921542Abstract: An electronic device includes a keyboard. The keyboard includes a base plate and keys disposed on a base plate. The base plate includes a back support plate, a membrane, and a backlight plate. The membrane and the backlight plate are disposed on two sides of the back support plate. The back support plate supports the membrane, the backlight plate, and the keys. In addition, a buffer structure is disposed on a surface of a side that is of the backlight plate and that faces the key. The back support plate is provided with a first through hole. The key is disposed on a side that is of the membrane and that is away from the back support plate. A protrusion is disposed on a side that is of the key and that faces the base plate. The key moves toward the base plate. The protrusion can press the buffer structure.Type: GrantFiled: September 7, 2021Date of Patent: March 5, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Fumio Tamura, Yake Zou, Weiyong Huang, Pan He, Ryo Otsuka
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Publication number: 20090002410Abstract: Data is printed predetermined number of times on a print area having a width W2 smaller than the maximum print width W1 of a print head (26) by using predetermined ink nozzles (26d) while moving a print medium F relative to the print head (26) in a state that the position of the print head (26) in a direction perpendicular to a feeding direction X of the print medium F is fixed. After that, the print head (26) is moved in the direction perpendicular to the feeding direction X of the print medium F each time printing has been performed the predetermined number of times while the print medium F is moved at a predetermined pitch at a time, and printing is again performed on the print area by using ink nozzles (26d) which are different at least partly from the ink nozzles (26d) which were used before the move, in the state that the print head (26) is fixed.Type: ApplicationFiled: January 11, 2005Publication date: January 1, 2009Inventors: Kazue Shirota, Fumio Otsuka
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Patent number: 5810489Abstract: The present invention is intended to facilitate the replacement of printing types and to eliminate mistakes in the replacement thereof. A printing type wheel 2 and a stock wheel 3 are coaxially arranged. The printing type wheel 2 is provided with an attachment part for inserting and attaching a printing type unit 5 for printing on an object F to be printed. The printing type unit 5 is detachably stocked in the stock wheel 3. The printing type unit 5 is taken out from the stock wheel 3 with a robot 6 so as to be attached on the printing type wheel 2. Ink is deposited to the printing type unit 5 attached on the printing type wheel 2 with an ink roller 45. The printing type wheel 5, the stock wheel 3 and the ink roller 45 are warmed with the heater 30 and the heater 46.Type: GrantFiled: October 6, 1995Date of Patent: September 22, 1998Assignee: Seiko Precision Inc.Inventors: Yuji Nakagaki, Fumio Otsuka, Hiroyuki Harada, Akio Tajima
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Patent number: 5271681Abstract: A paper cassette used in a printer for holding sheets of paper. The cassette comprises a case holding sheets of paper and corner claws mounted at both sides of the front end of this case. The claws engage the front ends of the corners of the uppermost sheet of paper. The claws have front walls which are inclined upwardly toward the direction in which the uppermost sheet is fed. The front walls are also inclined from the front end of the uppermost toward the direction in which the walls are distant from the front end of the sheet by slow degrees toward the inside of the widthwise of the sheet. When the uppermost sheet is curled, the corners of the front end of the sheet are disengaged from the corner claws certainly.Type: GrantFiled: May 4, 1992Date of Patent: December 21, 1993Assignee: Seikosha Co., Ltd.Inventors: Fumio Otsuka, Hiroyuki Harada, Akio Tajima, Noriyuki Kurokawa, Masami Nojima
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Patent number: 5193797Abstract: A paper feeding system that eliminates a mechanism for interrupting driving force to picking rollers to lower the cost of the system and to secure the feeding of papers. Corner nails are supported in a manner displacable up and down on the both sides of the front end portion of a paper cassette and the front corner portions of papers stored within the paper cassette can be anchored by the corner nails. A projecting part of the corner nails abuts to a stopper to restrict its upper limit position. When the paper is not fed, the picking rollers are in an up position and are separated from the paper and the corner nails retain the paper at a certain height position engaging with the front corner portion of the paper. When the paper is fed, the picking rollers go down to a down position to press the paper against biasing force of a bias spring and the corner nails are separated from the stopper and contact with the front corner portion of the paper in the down position.Type: GrantFiled: September 30, 1991Date of Patent: March 16, 1993Assignee: Seikosha Co., Ltd.Inventors: Hiroyuki Harada, Akio Tajima, Fumio Otsuka
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Patent number: 5096316Abstract: A serial printer includes a reciprocably mounted carriage having a printing head, and a generally flat flexible cable extends between the carriage and a drive circuit. A generally flat flexible reinforcing plate comprising a shield electrode is disposed in superimposed relationship to the flexible cable.Type: GrantFiled: November 14, 1989Date of Patent: March 17, 1992Assignee: Seikosha Co., Ltd.Inventors: Fumio Otsuka, Mikio Hayashi
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Patent number: 4986676Abstract: A printing head includes a plurality of printing levers, each having a front end portion and a rear end portion, with each printing lever being rotatable about its rear end portion. An electromagnetic drive is operable to individually drive the printing levers in a driving direction so as to apply a printing force to printing elements operated by the printing levers. Resilient springs operatively associated with the printing levers resiliently apply a return force to each of the printing levers in a return direction opposite to the driving direction. Stopper devices are disposed to be operatively engaged by each of the printing levers upon application of the printing force to thereby preclude contact between each of the printing levers and the electromagnetic drives upon application of the printing force.Type: GrantFiled: July 31, 1989Date of Patent: January 22, 1991Assignee: Seikosha Co., Ltd.Inventors: Koichi Kimura, Takeshi Matsumoto, Fumio Otsuka
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Patent number: 4887921Abstract: An inpact dot printer has a ribbon cassette the casing of which is made of plastic. A leaf spring is mounted in the casing so as to be resilient contact with the inked ribbon in the cassette. An element protrudes from the spring to the outside of the casing, and is located at a position where it is in resilient contact with either a carriage of conductive material or a metal part secured to the carriage when the ribbon cassette is installed in position on the carriage. When the printer effects printing operation, static electricity generated on the ribbon is carried away to ground via the protruding element and other components.Type: GrantFiled: December 9, 1983Date of Patent: December 19, 1989Assignee: Seikosha Co., Ltd.Inventors: Mikio Hayashi, Fumio Otsuka
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Patent number: 4601594Abstract: An ink ribbon cassette for a printer includes a ribbon storage chamber in which an endless ink ribbon is stored. The ribbon has a portion lying outside the chamber, and is movable out of and into the chamber by a feed roller. A roller is provided in the vicinity of the ribbon outlet of the chamber. A spring is provided adjacent to the chamber for holding the ribbon against the roller to impart tension to the outwardly lying ribbon portion. A lever contacts the spring, and is rotatable to deform the spring so that the spring may hold the ribbon against the roller with an increased force.Type: GrantFiled: December 23, 1983Date of Patent: July 22, 1986Assignee: Seikosha Co., Ltd.Inventors: Mikio Hayashi, Fumio Otsuka
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Patent number: 4325426Abstract: An air conditioner system for sensing and controlling the temperature in the compartment of an automotive vehicle to an established desired temperature includes an over-correction means whereby the vehicle compartment temperature is temporarily increased to exceed the desired temperature and the temperature rise is terminated after the sensed temperature has attained or nearly attained the desired temperature. When the sensed temperature rises so that the difference between it and the desired temperature exceeds a reference value, the corresponding correction signal is generated and correction is applied repeatedly so as to make the difference less than the reference value and thereby to attain the desired compartment temperature.Type: GrantFiled: June 5, 1980Date of Patent: April 20, 1982Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki KaishaInventors: Fumio Otsuka, Teiichi Nabeta, Yasufumi Kojima, Takeo Matsushima, Yasuhiro Fujioka, Eiichi Wada
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Patent number: D326111Type: GrantFiled: May 8, 1990Date of Patent: May 12, 1992Assignee: Seikosha Co., Ltd.Inventors: Fumio Otsuka, Yoshihiro Ohno