Patents by Inventor Hiroshi Ohashi
Hiroshi Ohashi 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: 4914532Abstract: A magnetic recording apparatus capable of efficiently erasing data in accordance with a type of magnetic recording medium, comprises a current source, an erase head for erasing data recorded on a recording medium using a supplied erase current, and a current supplying section for supplying an erase current from the current source to the erase head in accordance with input erase current control data. The current supplying section comprises a selecting section for selecting a combination of a plurality of control elements in accordance with the input erase current control data, and a supplying section for supplying an erase current determined in accordance with the selected combination from the current source to the erase head.Type: GrantFiled: June 30, 1988Date of Patent: April 3, 1990Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Ohashi, Yoshiaki Uchida, Masahiro Kusunoki
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Patent number: 4894412Abstract: A process for preparing a self-crosslinkable aminosiloxane emulsion, comprising:dispersing by emulsification in water in the presence of a cationic surface active agent and a nonionic surface active agent:(A) a specific organosilicon compound that may have a hydroxyl group and/or an alkoxy group;(B) a specific organosilicon compound having a nitrogen-containing monovalent hydrocarbon group; and(C) a specific organosilane having a hydroxyl group and/or an alkoxy group, and or a partial hydrolysis-condensation product thereof;subsequently carrying out emulsion polymerization in the presence of an alkaline catalyst; andthereafter neutralizing the reaction product.The resulting emulsion is useful as softening agents, smoothing agents or feeling improver for all sorts of textiles, and binders between fibers.Type: GrantFiled: May 18, 1988Date of Patent: January 16, 1990Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Fumio Okada, Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4891398Abstract: A fiber treatment composition comprising an aqueous dispersion containing;(A) 100 parts by weight of a finely particulate epoxy group-containing organosilasesquioxane substantially represented by general unit formula (I):R.sup.1 SiO.sub.3/2 (I)wherein said organic group having an epoxy group comprises from 0.1 to 50 mol % of the whole R.sup.1 ; and;(B) from 10 to 900 parts by weight of an amino group-containing organopolysiloxane represented by general unit formula (II): ##EQU1## wherein R.sup.2 is a monovalent hydrocarbon group having 1 to 20 carbon atoms, an alkoxy group or a hydroxyl group; Z is a particular amino group; and 1<a<3, 0<b<1 and 1<a+b<3. This composition is useful for deepening colors of dyed textiles and fabrics and improving softness and feeling, even with respect to synthetic fibers.Type: GrantFiled: August 12, 1988Date of Patent: January 2, 1990Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4891721Abstract: A magnetic head device for use with a high recording density, large memory capacity floppy disk, is disclosed. The slider of the magnetic head device has a contact surface for effecting contact with a disk, the lead/write gap is located at a predetermined position in the contact surface, and the width of the slider contact surface is 1 mm or less.Type: GrantFiled: June 3, 1988Date of Patent: January 2, 1990Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Ohashi, Masahiro Kusunoki
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Patent number: 4845576Abstract: A magnetic recording/reproduction apparatus of the invention has a magnetic head for reading a vertical magnetically recorded signal, an inplane magnetic recorded signal or a magnetic recorded signal having both a vertical magnetic component and an inplane magnetic component and for supplying a reproduced signal, a first analog signal converting circuit for converting the reproduced signal into an analog inplane reproduced signal when the reproduced signal is a vertical reproduced analog signal, a second analog signal converting circuit for bypassing an inplane analog reproduced signal when the reproduced signal is the inplane reproduced analog signal, and a third analog signal converting circuit for converting the reproduced signal into an inplane reproduced analog signal when the reproduced signal is the inplane reproduced analog signal. The circuits are switched to operate selectively in accordance with the type of signals reproduced from a magnetic recording medium.Type: GrantFiled: January 15, 1988Date of Patent: July 4, 1989Assignees: Kabushiki Kaisha Toshiba, Toshiba Computer Engineering CorporationInventors: Masahiro Kusunoki, Toshiya Saito, Hiroshi Okamura, Hiroshi Ohashi
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Patent number: 4811143Abstract: Leaf spring is fixed at one end thereto to a carriage, and extended at a predetermined angle to the carriage. A part of the leaf spring has rigidity. A gimbal spring, which free from the carriage, is mounted on the rigid portion. Head is fixed to the gimbal spring. The head can move perpendicularly to the carriage by the operation of the leaf spring, and can roll and pitch by the operation of the gimbal spring. Thus, the head can follow to move elevationally upward and downward and incline to the disk-like recording medium and contact the medium with good contacting property.Type: GrantFiled: March 30, 1987Date of Patent: March 7, 1989Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Ohashi, Toshiyuki Fujioka, Masahiro Kusunoki, Susumu Kimura, Shigeru Takekado
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Patent number: 4809427Abstract: A method for assembling a magnetic head supporting mechanism of a flexible disk drive apparatus comprising the steps of attaching to a gimbal support device a magnetic head for recording and reproducing information by contacting a recording surface of a disk, by a first gimbal device for slidably supporting the magnetic head, the gimbal support device receiving a force when the position of the magnetic head is adjusted, placing the first gimbal device in a position opposite the disk of a head support device, applying the force to the gimbal support device to position the magnetic head in a predetermined position separated by a predetermined distance from a reference position of the head support device, and moving the gimbal support device in the position opposite the disk of the head support device, and attaching the gimbal support device to the head support device.Type: GrantFiled: March 31, 1987Date of Patent: March 7, 1989Assignee: Kabushiki Kaisha ToshibaInventors: Tsuneo Suzuki, Chikahisa Kawakami, Hiroshi Ohashi
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Patent number: 4778624Abstract: The invention provides a method for the preparation of a stable aqueous emulsion of a poly(silsesquioxane) without formation of gelled particles. In the method, a trialkoxysilane compound as the starting material is first emulsified in an aqueous medium containing a cationic surface active agent and a non-ionic surface active agent having a specified HLB value in the range from 16 to 20 in combination followed by the addition of an alkali catalyst and heating to effect hydrolysis and polycondensation of the trialkoxysilane.Type: GrantFiled: August 15, 1986Date of Patent: October 18, 1988Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hiroshi Ohashi, Kiyohiro Kondow, Fumio Okada, Masaki Tanaka
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Patent number: 4769724Abstract: In a magnetic head drive apparatus of this invention, a coil of an erasing head is connected to a center point of the coils of a read/write head, and a drive current from a constant-current source is alternately supplied to both terminals of the coil of the read/write head, according to the polarity of the write data. When the read/write head is driven to write data in a magnetic recording medium, the erasing head and the read/write head are driven at an identical timing. In this case, the drive currents for the read/write head and the erasing head are supplied from a single-current source. For this reason, separate constant-current sources are not necessary for the read/write head and the erasing head.Type: GrantFiled: November 4, 1986Date of Patent: September 6, 1988Assignee: Kabushiki Kaisha ToshibaInventors: Masahiro Kusunoki, Hiroshi Ohashi
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Patent number: 4757121Abstract: The inventive composition is a silicone-based softening agent for synthetic fibers such as waddings of polyester fibers without the disadvantage of yellowing caused by heat or in the lapse of time. The essential ingredients of the inventive composition are a combination of two different amino-substituted organopolysiloxanes, an opoxy-containing alkoxysilane compound such as 3-glycidyloxypropyl methyl dimethoxy silane and a monoepoxy compound such as glycidyl alcohol each in a specified amount. Characteristically, one of the amino-substituted organopolysiloxane components is a reaction product of an amino-substituted organopolysiloxane and an organic opoxy compound.Type: GrantFiled: September 15, 1987Date of Patent: July 12, 1988Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4748062Abstract: In a decorative member having a transparent layer with a lens effect, a base having a decorative face is covered with the transparent layer with a lens effect. A chevron projection is continuously provided on the boundary between faces constituting the decorative face to emphasize the intersection of the faces.Type: GrantFiled: October 29, 1986Date of Patent: May 31, 1988Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Yoshihiro Menjo, Seiji Kobayashi, Takuji Nagata, Hiroshi Ohashi, Yoshiharu Kanamori
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Patent number: 4725635Abstract: The silicone-based fiber finishing agent is particularly suitable for synthetic fiber-made fabric materials such as waddings of polyester fibers to impart excellent softness and smoothness in touch and free from yellowing even by heating with high resistance against dry cleaning. The fiber finishing agent comprises (A) an organopolysiloxane of a substantially linear molecular structure terminated at each molecular chain end with a silanolic hydroxy group or alkoxy group and having at least one amino-substituted hydrocarbon group bonded to the silicon atom in a molecule, (B) an epoxy-containing alkoxy silane compound such as methyl dimethoxy 3-glycidyloxypropyl silane and (C) an epoxy-containing organic compound free from silicon such as glycidyl alcohol and glycidyl methacrylate.Type: GrantFiled: May 12, 1987Date of Patent: February 16, 1988Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Fumio Okada, Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4677178Abstract: The silicone-based textile finishing agent comprises (a) an organopolysiloxane having at least one hydrocarbyl group substituted with a phosphate ester group --PO(OR).sub.2, in which R is a monovalent hydrocarbon group, (b) an alkoxy silane having at least one organofunctional group such as amino and epoxy groups in a molecule, and, optionally, (c) a catalyst capable of promoting the reaction between the components (a) and (b), preferably, in the form of an aqueous emulsion. The textile finishing agent is capable of imparting excellent softness and slipperiness to the textile materials such as waddings of polyester or acrylic fibers treated therewith without the disadvantage of yellowing by heat treatment.Type: GrantFiled: March 31, 1986Date of Patent: June 30, 1987Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Fumio Okada, Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4617344Abstract: The organopolysiloxane in the inventive latex is modified with phosphonate ester-containing groups such as those expressed by the formula --Si--CH.sub.2 CH.sub.2 --PO(OEt).sub.2 (Et: ethyl group) and --Si--CH.sub.2 CH.sub.2 CH.sub.2 --PO(ODd).sub.2 (Dd: dodecyl group) and exhibits excellent performance in the applications as a fabric treatment agent and the like. The inventive organopolysiloxane latex can be prepared by the polymerizing reaction of an organosilicon compound or, preferably, an organopolysiloxane and a phosphonate ester-modified alkoxysilane emulsified together in an aqueous medium containing a surface active agent of the class of the organic sulfonic acid type or a sulfate ester type ones which serves both as an emulsifier and as an acid catalyst.Type: GrantFiled: May 8, 1985Date of Patent: October 14, 1986Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4617340Abstract: The inventive fabric treatment agent can impart excellent hydrophilicity to fabric materials of, in particular, synthetic fibers with durability and launderability. The principal ingredient of the agent is a copolymer composed of three types of moieties including (a) a diorganopolysiloxane terminated at both molecular chain ends each with a non-silanolic hydroxy group or other active hydrogen-containing group, e.g. --SH, --COOH and --NH.sub.2, (b) a polyol compound having polyoxyalkylene linkages which is typically a polyoxyethylene glycol and (c) a diisocyanate compound which serves as a coupling agent between the moieties (a) and (b).Type: GrantFiled: June 4, 1985Date of Patent: October 14, 1986Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Masaki Tanaka, Hiroshi Ohashi
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Patent number: 4382252Abstract: An intrusion warning system for indicating the presence of an intruder to a given area includes an antenna provided around the area and which is insulated from the ground. An oscillator is provided for feeding an alternating current signal to the antenna, and a coupling impedance is connected between an output of the oscillator and the antenna. The coupling impedance includes an arrangement to vary the impedance to an appropriate value such that the voltage fed to the antenna is approximately 50% of the voltage fed from the oscillator to the coupling impedance. By this arrangement the detection sensitivity is always kept at an optimum. The system also includes a signal processing apparatus for producing an output signal responsive to a change in the voltage of the alternating current on the antenna exceeding a predetermined level.Type: GrantFiled: March 30, 1981Date of Patent: May 3, 1983Assignee: Matsushita Electric Works, Ltd.Inventors: Hiroshi Ohashi, Yuji Takada
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Patent number: 4366473Abstract: An intrusion warning system for indicating the presence of an intruder to a given area comprises a single antenna line encircling the area insulated from the ground, a high frequency oscillator (e.g. of 1 kHz to 10 kHz) for feeding a high frequency signal to the antenna, a coupling impedance, for example, a capacitor, connected between the output terminal of the oscillator and the antenna, and a signal processing part which produces an alarm when detecting a voltage change over a predetermined level of the antenna induced by a proximation of the intruder.Type: GrantFiled: December 31, 1980Date of Patent: December 28, 1982Assignee: Matsushita Electric Works, Ltd.Inventors: Hiromitsu Inoue, Hiroshi Ohashi, Yuji Takada
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Patent number: 4292679Abstract: Means for mounting a member functioning with a directivity to a mounting station of an associated device or the like. A housing for the member with its functional end surface exposed to the exterior is tapered at the periphery toward the other end to be, for example, hemispherical and rotatably born at diametrally opposed positions adjacent the functional end surface by both ends of a semiarcuate bearing means, the mounting station has a hole including peripherally opposing grooves of a size and shape capable of slidably engaging with the tapered periphery of the housing and receiving semiarcuate body of the bearing means, the housing is inserted in the hole on said the other end side, and the semiarcuate body of the bearing means in the inserted position of the member engages slidably with a resilient means acting to resiliently urge the tapered periphery of the housing against peripheral edge of the hole.Type: GrantFiled: January 7, 1980Date of Patent: September 29, 1981Assignee: Matsushita Electric Works, Ltd.Inventors: Mikio Kondo, Hiromitsu Inoue, Hiroshi Ohashi
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Patent number: 4287579Abstract: A moving object detecting device employing a pair of Doppler signals as a pair of vector signals of respective received-wave signals representing momentary reflected waves from a moving object. These vector signals are processed to obtain signals denoting in which ones of predetermined zones for the vector rotation depending on the movements of the object the vector is momentarily present, and shifting states of such zone signals through the zones are traced to sequentially determine the direction and period of the vector rotation and to actuate an alarm or the like when the rotation is in a fixed direction.Type: GrantFiled: November 8, 1979Date of Patent: September 1, 1981Assignee: Matsushita Electric Works, Ltd.Inventors: Hiromitsu Inoue, Hiroshi Ohashi, Mikio Kondo
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Patent number: 4141642Abstract: An improved optical fiber cathode ray tube is provided which enables the recording of images on a recording medium with a high resolution even if the recording medium is disposed with an increased gap between the tube and the recording medium to prevent mechanical contact therebetween. The tube is provided with an additional stack of optical fibers facing the optical fiber face plate of the cathode ray tube with a light transparent thin layer being interposed between the face plate and the additional stack. The transparent thin layer may be a transparent plate and/or air gap. The stack of optical fibers may be in a form of an optical fiber plate or bundle.Type: GrantFiled: July 1, 1977Date of Patent: February 27, 1979Assignee: Japan Radio Company, Ltd.Inventors: Kiyoshi Nagai, Hiroshi Ohashi, Takao Ohiwa