Patents by Inventor Takeshi Sawada
Takeshi Sawada 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: 5422442Abstract: The mechanism for containing an input pen is provided with a pen holder having a shape of pipe, which contains an input pen having substantially a shape of stick, keeping the back end of the input pen exposed. The pen holder is provided with a pen stopper to couple with the input pen. There is provided a locking groove which is coupled with the pen stopper. There is provided a plate spring which supplies force to the pen stopper to the inside of the pen holder. At least one of the pen stopper and the locking groove is so shaped that the pen stopper is supplied force against the force of the plate spring when the input pen is supplied force in the discharge direction. In this arrangement, the mechanism for containing an input pen can be made simpler since the input pen can be taken out without a releasing button conventionally needed. Therefore, since the number of parts and the number of manufacturing procedures in assembly decrease, manufacturing cost can be reduced.Type: GrantFiled: October 25, 1993Date of Patent: June 6, 1995Assignee: Sharp Kabushiki KaishaInventors: Norifumi Gouda, Syunichi Miyako, Takeshi Sawada
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Patent number: 5389908Abstract: Coils for electric appliances such as motor or generator are made with a superconducting material, and the width of the coil and the gap between the coils are so adjusted that the passage of magnetic flux generated by a magnetic flux generating member in the electric appliance is not influenced by the magnetic repulsion of the superconducting material.Type: GrantFiled: October 20, 1993Date of Patent: February 14, 1995Assignee: Canon Kabushiki KaishaInventor: Takeshi Sawada
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Patent number: 5361407Abstract: A superheterodyne receiver comprises a variable frequency oscillator of PLL (phase-locked loop) type for implementing a first local oscillator and a variable frequency oscillator not of PLL type for implementing a second local oscillator. At least the frequency of a first locally generated signal is varied at reception to vary a received frequency, the frequency of the first locally generated signal is set at frequency calibration to a level equal to the frequency of a first intermediate-frequency signal, the second intermediate-frequency signal is frequency-converted by a BFO signal to a signal having a frequency of voice band, and the frequency of a second locally generated signal is calibrated to set the frequency of the frequency-converted signal to a specified level.Type: GrantFiled: November 23, 1992Date of Patent: November 1, 1994Assignee: Sony CorporationInventors: Takeshi Sawada, Tadashi Sakai
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Patent number: 5261273Abstract: The pneumatic pressure in a tire on a wheel of a vehicle is introduced into a pressure chamber positioned at a central axis about which the tire is rotatable through a communication passage defined in the wheel. When the pneumatic pressure in the pressure chamber varies, a diaphragm or bellows attached over the pressure chamber is elastically displaced, axially moving a slide bar extending axially through a wheel shaft on which the wheel is supported. The movement of the slide bar displaces a ferromagnetic member in a coil, whose inductance then varies. The change in the coil inductance is detected by an electronic control unit, which transmits a signal to a display unit.Type: GrantFiled: July 24, 1991Date of Patent: November 16, 1993Assignee: Nippondenso Co., Ltd.Inventors: Yuichi Imani, Takeshi Sawada
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Patent number: 5173825Abstract: A magnetic head has a magnetic core comprising a first half core on which a thin magnetic metal film is deposited and a second half core which is opposed to the first half core across a magnetic gap. The film thickness of the thin magnetic metal film of the first half core continuously varies at about a constant rate within a portion thereof adjacent to the effective portion of the magnetic gap.Type: GrantFiled: October 14, 1987Date of Patent: December 22, 1992Assignee: Canon Kabushiki KaishaInventors: Takashi Suzuki, Takeshi Sawada, Toshio Yamanaka, Tsuyoshi Orikasa, Hiroyuki Suzuki, Makoto Kameyama, Kiyozumi Niizuma
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Patent number: 5099162Abstract: Coils for electric appliances such as motor or generator are made with a superconducting material, and the width of the coil and the gap between the coils are so adjusted that the passage of magnetic flux generated by a magnetic flux generating member in the electric appliance is not influenced by the magnetic repulsion of the superconducting material.Type: GrantFiled: July 18, 1988Date of Patent: March 24, 1992Assignee: Canon Kabushiki KaishaInventor: Takeshi Sawada
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Patent number: 5065500Abstract: A magnetic head assembly in which grooves, extending in the slide direction of a magnetic recording medium, are formed on both sides of an electro-magnetic converting section on the surface where the magnetic recording medium slides.Type: GrantFiled: June 12, 1990Date of Patent: November 19, 1991Assignee: Canon Kabushiki KaishaInventors: Kou Yoneda, Takeshi Sawada
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Patent number: 4982098Abstract: Disclosed is speed compensated intensifying screen which has a layer of phosphor and a protective layer superposed sequentially on a substrate and further has a light-absorbing layer capable of absorbing part of the light emitted from the layer of phosphor superposed thereon. By this light-absorbing layer, a plurality of regions differing in speed are formed within the layer of phosphor. In the plurality of regions, the speed is continuously changed across the borderlines between the regions. This continuous change in density across the borderlines prevents the borderlines between the regions of speed from appearing as line patterns in the produced X-ray radiograph. The intensifying screen of the grade adapted for X-ray radiography of the chest effects proper speed correction by incorporating therein a plurality of regions of speed formed so as to conform to the various internal organs in the chest such as the upper and lower mediastinums, the hilums of the lung, and the lungfields.Type: GrantFiled: January 27, 1988Date of Patent: January 1, 1991Assignees: Kabushiki Kaisha Toshiba, Fujita-Gakuen Health UniversityInventors: Kazuo Yokota, Akihisa Saito, Takeshi Sawada
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Patent number: 4912408Abstract: Disclosed is a distance measuring system suitably usable in a semiconductor microcircuit manufacturing lithographic apparatus such as an aligner or a stepper, for measuring the position or the distance of movement of a movable object such as a mask stage or a wafer stage. The system includes a magnetic field producing portion such as a magnet for producing a predetermined magnetic field, a superconducting quantum interference device coupled to the mask stage or the wafer stage. Further, there are provided a magnetic flux detecting portion for outputting signals corresponding to changes in the magnetic flux, in the magnetic field, passing through the superconducting quantum interference device and a signal processing unit for processing the output signals of the magnetic flux detecting portion to detect the position or the distance of movement of the mask stage or the wafer stage.Type: GrantFiled: May 27, 1988Date of Patent: March 27, 1990Assignee: Canon Kabushiki KaishaInventors: Takeshi Sawada, Ryo Kuroda, Noriyuki Nose, Yukichi Niwa
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Patent number: 4890378Abstract: A magnetic head in which a first magnetic film made of a material of high saturation magnetic flux density is deposited on the surface of a block made of a high permeability material and which contains a groove for winding. A nonmagnetic film made of a nonmagnetic material and serving as a magnetic gap is formed on the first magnetic film; and a second magnetic film made of a material of high saturation magnetic flux density is further formed on the nonmagnetic film. A reinforcing block is arranged on the second magnetic film and has a nonmagnetic material portion exposed to a slide surface of a recording medium. The high permeability material block, the first magnetic film and the second magnetic film together constitute a magnetic core, and the second magnetic film is bonded with the reinforcing block.Type: GrantFiled: August 19, 1988Date of Patent: January 2, 1990Assignee: Canon Kabushiki KaishaInventors: Takashi Suzuki, Toshio Yamanaka, Hiroyuki Suzuki, Tsuyoshi Orikasa, Takeshi Sawada, Makoto Kameyama, Kiyozumi Niizuma
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Patent number: 4835069Abstract: A magnetic recording medium having a magnetic layer formed by a thin film deposition method, said magnetic layer comprising Fe as the principal component together with Co, Ni, and Cr, further containing at least one element selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Mo, W, Cu, Mn and Sb.Type: GrantFiled: August 3, 1984Date of Patent: May 30, 1989Assignees: Canon Kabushiki Kaisha, Tohoku Steel Co. Ltd.Inventors: Takeshi Sawada, Akira Shinmi, Hiroshi Takagi, Kenji Suzuki, Fumio Kishi, Susumu Kozuki
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Patent number: 4649449Abstract: A magnetic head for perpendicularly magnetizing a magnetic recording medium having a first magnetic pole to reverse the magnetization in the magnetic recording medium which has been magnetized beforehand in a certain direction, and a second magnetic pole to control reversal of the magnetization in the recording medium effected by the first pole.Type: GrantFiled: February 25, 1985Date of Patent: March 10, 1987Assignee: Canon Kabushiki KaishaInventors: Takeshi Sawada, Yasushi Toda, Hirokazu Goto
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Patent number: 4567116Abstract: A magnetic recording medium having a magnetic layer formed by a thin film deposition method, characterized in that the magnetic layer contains Fe as the principal component, Co, Ni and at least one of Mn, Cu, V, Nb, Ta, Mo, W, Ti, Zr and Hf.Type: GrantFiled: July 27, 1984Date of Patent: January 28, 1986Assignees: Canon Kabushiki Kaisha, Tohoku Steel Co., Ltd.Inventors: Takeshi Sawada, Akira Shinmi, Hiroshi Takagi, Kenji Suzuki, Fumio Kishi, Susumu Kozuki
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Patent number: 4506220Abstract: A magnetoresistive effect thin film magnetic sensor has a temperature compensating magnetoresistive effect (MR) element arranged non-parallel to a signal detecting MR element to prevent the temperature compensating MR element from being influenced by an external magnetic signal field. Alternatively, it has an L-shaped temperature compensating MR element arranged closely to the signal detecting MR element to prevent the temperature compensating MR element from being influenced by the external magnetic signal field. It further has a magnet member arranged closely to or in contact with the temperature compensating MR element to enhance a positional precision of the temperature compensation and reduce a time lag.Type: GrantFiled: November 2, 1981Date of Patent: March 19, 1985Assignees: Canon Kabushiki Kaisha, Canon Denshi Kabushiki KaishaInventors: Takeshi Sawada, Kou Yoneda, Akira Shinmi, Hiroshi Takagi, Shuzo Abiko, Hirokazu Goto
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Patent number: 4443826Abstract: The present invention is directed to improvements in a perpendicular magnetic recording-reproducing head. One of the improvements comprises the use of a magneto-resistive effect element to form the main pole of the magnetic head. This feature of the invention enables a stable and faithful reproduction of information recorded in a magnetic recording medium up to the shortest wavelength and to obtain a sufficiently large reproducing output signal. Another improvement comprises the use of such magneto-resistive effect elements in layers. The multilayer structure permits production of a large reproducing output and also an optimum S/N ratio even if the width of track is small.Type: GrantFiled: October 23, 1981Date of Patent: April 17, 1984Assignees: Canon Kabushiki Kaisha, Canon Denshi Kabushiki KaishaInventors: Takeshi Sawada, Ko Yoneda, Akira Shinmi, Hiroshi Takagi, Shuzo Abiko, Hirokazu Goto
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Patent number: 4438470Abstract: A process for making magnetic reluctance effect type magnetic heads comprises forming the magnetic sensor, first lead and second lead sections in series by use of the same material. The noise in the magnetic head is reduced, yet the output is increased by making the first lead section of a width larger than that of the magnetic sensor and second lead sections. The reproducing sensitivity of the magnetic head is increased by forming a plurality of magnetic sensor sections in series within a rectangular area. The control of the magnetic characteristics of the head are controlled for providing less dispersion by providing a substrate on which a magnetic reluctance effect type material varying in electric resistance in response to any magnetic field is formed into a film, the substrate being optionally etched by the use of photolithography to form the magnetic sensor sections, the first lead section and the second lead section on the substrate in given configurations.Type: GrantFiled: July 20, 1981Date of Patent: March 20, 1984Assignees: Canon Kabushiki Kaisha, Canon Denshi Kabushiki KaishaInventors: Takeshi Sawada, Ko Yoneda, Akira Shinmi, Hirokazu Goto, Shuzo Abiko
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Patent number: 4369521Abstract: Radio receiving apparatus having a receiving unit including an RF stage and a signal processing state, the latter producing an audio frequency signal in response to the RF signal supplied to the RF stage. The receiving unit also includes a jack having at least first and second contacts, the first contact being supplied with the audio frequency signal and the second contact being coupled to a reference potential by impedance means which presents a relatively high impedance to a RF signal. Headphones are connectable to the receiving unit by conducting leads which terminate in a plug that is insertable into the jack. The plug has at least two conductive portions which, when the plug is inserted into the jack, connect to the first and second jack contacts, respectively. The conducting leads which connect the headphones to the plug include at least one signal carrying lead which is connected to the conductive portion of the plug which is connected to the first jack contact and which receives the audio signal.Type: GrantFiled: June 15, 1981Date of Patent: January 18, 1983Assignee: Sony CorporationInventor: Takeshi Sawada
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Patent number: 4176539Abstract: A cold-roll forming stand for forming a flat metal strip into a desired section which includes a pair of upper and lower forming rolls for forming the metal strip lengthwise; a pair of intermediate longitudinal forming rolls for bending or curving the metal strip widthwise are mounted on intermediate vertical shafts, a pair of front longitudinal forming rolls mounted on vertical shafts upstream of the pair of intermediate longitudinal forming rolls and a pair of rear longitudinal forming rolls are mounted on vertical shafts downstream of the pair of intermediate longitudinal forming rolls, whereby the metal strip is subjected to the bending and/or curving lengthwise by the pair of upper and lower forming rolls and widthwise by the front, intermediate and rear pairs of longitudinal forming rolls.Type: GrantFiled: March 16, 1978Date of Patent: December 4, 1979Assignee: Hitachi Metals, Inc.Inventors: Takeshi Sawada, Takeshi Inoue