Patents by Inventor Mitsuhiro Ikeda
Mitsuhiro Ikeda 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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Patent number: 5586436Abstract: The present invention aims to provide a master cylinder reservoir in which the leakage of hydraulic fluid is prevented. To achieve the above object, in the master cylinder reservoir of the present invention in which a diaphragm is interposed between a cap and a body to define an upper chamber communicating with the outside and a lower chamber communicating with a reservoir chamber, and a slit is formed in the diaphragm so that the slit is opened by the deformation of diaphragm caused by the pressure difference acting on the upper and lower surfaces of the diaphragm, by which communication is permitted between the upper and lower chambers, a plate is disposed below the diaphragm in such a manner as to substantially cover the diaphragm, and a vent hole communicating between the upper and lower surfaces of the plate is provided.Type: GrantFiled: June 23, 1995Date of Patent: December 24, 1996Inventors: Shozo Sakaguchi, Mitsuhiro Ikeda, Syusaku Chiba
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Patent number: 5498772Abstract: Disclosed is a reversible heat-sensitive recording material comprising a substrate and a recording layer formed thereon, said recording layer comprising a colorless or light-colored, electron-donating dye precursor and a specific electron-accepting compound capable of causing a reversible color tone change of the dye precursor on heating.Type: GrantFiled: October 12, 1994Date of Patent: March 12, 1996Assignee: Mitsubishi Paper Mills LimitedInventors: Jun Maruyama, Kazuyuki Iida, Koichi Torizuka, Shoji Hizatate, Hidekazu Sano, Mitsuhiro Ikeda
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Patent number: 5395815Abstract: As a reversible heat-sensitive recording material which contains a normally colorless or palely colored electron donating dye precursor and an electron accepting compound capable of causing said dye precursor to change reversibly in color density due to the difference in cooling rate after heating, one in which images can be formed and erased with good contrast and images high in time stability can be maintained under environment of everyday life can be obtained by using a phenolic compound having at least one aliphatic hydrocarbon group of 6 or more carbon atoms as the said electron donating compound.Type: GrantFiled: June 8, 1993Date of Patent: March 7, 1995Assignee: Mitsubishi Paper Mills LimitedInventors: Mitsuhiro Ikeda, Yasuro Yokota, Shigetoshi Hiraishi, Kazuyuki Iida, Hidekazu Sano
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Patent number: 5296321Abstract: A photorecording element consists essentially of a transparent substrate, a layer of a macromolecular compound capable of undergoing a reversible change in structure upon exposure to light, deposited by adsorption on the transparent substrate, and a liquid crystal layer disposed directly on the layer of macromolecular compound. A method for the production of the photorecording element comprises applying on a transparent substrate a mixture of a liquid crystal substance with a macromolecular compound capable of undergoing a reversible change in structure upon exposure to light and allowing the applied layer of the mixture to stand at rest or by first applying the macromolecular compound on the transparent substrate and then adding the liquid crystal substance thereto. A liquid crystal cell incorporating the photorecording element is also disclosed.Type: GrantFiled: December 29, 1992Date of Patent: March 22, 1994Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Yuji Kawanishi, Kunihiro Ichimura, Takashi Tamaki, Takahiro Seki, Mitsuhiro Ikeda
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Patent number: 5164967Abstract: A pedometer for exercise such as walking and jogging, comprising the fact that an appropriate intensity of exercise is set by setting reference signals, which the user of the pedometer is permitted to hear with a sound producer or an earphone, thereby making it possible to render the user conscious of the exercise at the appropriate intensity and to count or measure and then display the number of steps of the exercise, the period of time thereof, and the continuation period of time thereof as associated with the set reference signals.Type: GrantFiled: September 4, 1990Date of Patent: November 17, 1992Assignee: Marutakairyoki Kabushiki KaishaInventors: Mikiya Endo, Mitsuhiro Ikeda
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Patent number: 4983568Abstract: There is disclosed a thermosensitive recording material comprising an ordinarily colorless or slightly colored dye precursor, an electron receptive compound (developer) coloring said dye precursor by reacting when heated, and a compound of following general formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represents hydrogen atom, alkyl, alkenyl or aryl group, and R.sub.1 and R.sub.2 may be different from each other; may also be linked together to form cycloalkyl, cycloether, and the like; and R.sub.3 and R.sub.4 each represents hydrogen atom, alkyl, alkenyl, alkoxy or aryl group and halogen atom, and R.sub.3 and R.sub.4 may be different from each other.Type: GrantFiled: September 28, 1989Date of Patent: January 8, 1991Assignee: Mitsubishi Paper Mills LimitedInventor: Mitsuhiro Ikeda
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Patent number: 4917844Abstract: When a laminate product is manufactured by extruding a thermoplastic resin on a substrate for coating, a space enclosed between a member for cooling the thermoplastic resin and a non-cooled thermoplastic resin film is kept within an atmosphere having a high permeability with respect to the thermoplastic resin film. Occurrence of craters in the laminated resin film is reduced.Type: GrantFiled: March 31, 1988Date of Patent: April 17, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiya Komai, Sei Kawahara, Mitsuhiro Ikeda
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Patent number: 4910988Abstract: A pair of tapered work rolls are arranged to confront each other and the work rolls are shifted to locate the side edges of a material to be rolled at the tapered portions of the work rolls, by adding the quantity of the movement of the taper-initiating point by wearing of the rolls to the shift quantity of the rolls, and rolling is carried out while maintaining an effective adjustment of the crown quantity (effective shift quantity). Therefore, defects such as edge drop and high spot can be effectively prevented and the crown quantity can be freely controlled, and accordingly, a desired crown quantity can be easily obtained.Type: GrantFiled: January 11, 1988Date of Patent: March 27, 1990Assignee: Nippon Steel CorporationInventors: Mitsuhiro Ikeda, Kiyoshi Muramatsu, Yuichi Hongo, Toshio Yanai
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Patent number: 4773447Abstract: The present invention discloses an electromagnetic valve for use in a railroad car slip prevention control of the brake system. Such electromagnetic valve having three-position control capability. The control position is selected based on an excitation current supplied to a solenoid valve.Type: GrantFiled: June 25, 1987Date of Patent: September 27, 1988Assignee: Nippon Air Brake Co., Ltd.Inventors: Asaji Imanaka, Mitsuhiro Ikeda
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Patent number: 4729556Abstract: An apparatus for detecting the thickness of a bank note has a plurality of detectors which slide along the surface of the bank note. The detectors are attached to a detection arm side by side. The detection arm is pivotably mounted an a machine frame. If one or more detectors slide on the bank note having a thickness exceeding a standard value, the arm is swung and the displacement of the arm is detected.Type: GrantFiled: February 5, 1986Date of Patent: March 8, 1988Assignee: Laurel Bank Machines Co., Ltd.Inventors: Kiyoshi Fujii, Mitsuhiro Ikeda
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Patent number: 4724859Abstract: A self-lapping type valve device having a construction in which the pressure force acting on the valve assembly is substantially the same when the valve assembly is in a lap condition following either a pressure-buildup phase of control or a pressure-release phase of control, thereby reducing hysteresis heretofore affecting such valve devices.Type: GrantFiled: December 9, 1986Date of Patent: February 16, 1988Assignee: Nippon Air Brake Co., Ltd.Inventors: Yasuo Nakao, Mitsuhiro Ikeda
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Patent number: 4679863Abstract: A read-convert device for use on an electric brake command car of a railway train having pneumatic brake command cars. A control wire provides the electric emergency brake control on the electric brake command cars, while a brake pipe provides the pneumatic emergency brake control on the pneumatic brake command cars. A cut-off portion of the read-convert device connects a regulated source of pneumatic pressure to the brake pipe when an electric emergency release signal is provided by the control wire, provided a switch valve in the cut-off portion is set for electric brake command operation. Accordingly, an electrically-initiated, emergency brake application on the pneumatic brake command cars can be released through the control wire on the electric brake command cars.Type: GrantFiled: April 29, 1986Date of Patent: July 14, 1987Assignee: Nippon Air Brake Co., Ltd.Inventors: Mitsuhiro Ikeda, Yasuo Nakao
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Patent number: 4678241Abstract: An equalizer discharge valve for use on a railroad air brake system includes a valve housing having an equalizer chamber formed therein above a brake pipe chamber and separated by a piston, diaphragm configuration. The diaphragm is sealed on the outer circumference by the connection to the housing and on the inner circumference by the connection to the piston. A connecting passage formed in the piston has a check valve disposed therein such that fluid pressure can only flow from the equalizer chamber to the brake pipe chamber. An exhaust valve, disposed between the brake pipe chamber and an exhaust chamber, vents the brake pipe chamber when opened as corresponds to selected venting of the equalizer chamber fluid pressure. A back pressure chamber and piston configuration is formed above the equalizer chamber such that fluid pressure from the exhaust chamber can be communicated thereto to counterbalance the force on the piston exerted from the brake pipe side during an exhaust operation.Type: GrantFiled: March 10, 1986Date of Patent: July 7, 1987Assignee: Nippon Air Brake Co., Ltd.Inventors: Hideo Tamamori, Mitsuhiro Ikeda
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Patent number: 4589007Abstract: A semiconductor integrated circuit device is disclosed. A plurality of unit cells, each having at least a basic transistor device formed on one main surface of a semiconductor substrate, are arranged in a line to form a unit cell line. At least two of such unit cell lines are arranged adjacent to and in parallel with each other to form a basic cell line. A plurality of such basic cell lines are arranged in parallel with each other with a wiring region of a predetermined width being interleaved between adjacent basic cell lines.Type: GrantFiled: September 6, 1983Date of Patent: May 13, 1986Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Shigeo Kuboki, Mitsuhiro Ikeda, Akihiko Takano, Yoji Nishio, Ikuro Masuda
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Patent number: D372254Type: GrantFiled: July 21, 1995Date of Patent: July 30, 1996Assignee: Koyo Seiko Co., Ltd.Inventors: Shigeyoshi Hirayama, Yoshiaki Hyodo, Mitsuhiro Ikeda