Patents by Inventor Fumiaki Kawaguchi
Fumiaki Kawaguchi 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: 20240152099Abstract: An electronic apparatus includes a secondary battery, a first power feeder, a second power feeder, and a processor. The first power feeder feeds power to the secondary battery. The second power feeder feeds power to the secondary battery at a current larger than a current fed by the first power feeder. The processor detects a voltage of the secondary battery, and determines a remaining power of the secondary battery based on a comparison of the detected voltage with first or second reference values. The first reference value is a predetermined value set in accordance with the current fed by the first power feeder. The second reference value is a predetermined value set in accordance with the current fed by the second power feeder, and is higher than the first reference value.Type: ApplicationFiled: January 15, 2024Publication date: May 9, 2024Applicant: CASIO COMPUTER CO., LTD.Inventors: Fumiaki OCHIAI, Yoshinori ASAMI, Yohei KAWAGUCHI, Katsuhiko OBATA
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Patent number: 8784637Abstract: The present invention provides a method of manufacturing anode foil for aluminum electrolytic capacitors with high capacitance and decreased leakage current. The method has the following steps: dipping etched aluminum foil into pure water having a temperature of 90° C. or higher so as to form a hydrated film on the foil; attaching organic acid to the surface of the hydrated film; performing main chemical conversion on the aluminum foil with application of formation voltage after the attaching step; performing depolarization on the aluminum foil after the main chemical conversion step; and performing follow-up chemical conversion on the aluminum foil after the main chemical conversion step. The main chemical conversion treatment has two-or-more stages. In the first stage of the treatment, the foil is dipped into a phosphate aqueous solution, and in the last stage, it is dipped into an aqueous solution different from the phosphate aqueous solution.Type: GrantFiled: June 7, 2010Date of Patent: July 22, 2014Assignee: Panasonic CorporationInventors: Naomi Kurihara, Katsunori Matsuda, Fumiaki Kawaguchi, Takahiro Suzuki
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Publication number: 20100326837Abstract: The present invention provides a method of manufacturing anode foil for aluminum electrolytic capacitors with high capacitance and decreased leakage current. The method has the following steps: dipping etched aluminum foil into pure water having a temperature of 90° C. or higher so as to form a hydrated film on the foil; attaching organic acid to the surface of the hydrated film; performing main chemical conversion on the aluminum foil with application of formation voltage after the attaching step; performing depolarization on the aluminum foil after the main chemical conversion step; and performing follow-up chemical conversion on the aluminum foil after the main chemical conversion step. The main chemical conversion treatment has two-or-more stages. In the first stage of the treatment, the foil is dipped into a phosphate aqueous solution, and in the last stage, it is dipped into an aqueous solution different from the phosphate aqueous solution.Type: ApplicationFiled: June 7, 2010Publication date: December 30, 2010Inventors: Naomi KURIHARA, Katsunori Matsuda, Fumiaki Kawaguchi, Takahiro Suzuki
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Patent number: 5247505Abstract: The information recording method of the present invention comprises steps of recording information on a recording medium by a recording head during forward movement, reading the information recorded during the forward movement in the opposite sequence to the recording sequence during backward movement, and checking if the information has been correctly written or not based on the information read during the backward movement.Type: GrantFiled: December 4, 1992Date of Patent: September 21, 1993Assignee: Canon Kabushiki KaishaInventors: Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui, Hiroshi Matsuoka, Kazuhiko Matsuoka, Hideki Hosoya, Akio Aoki, Masahiko Enari, Kazuo Minoura
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Patent number: 5099991Abstract: Electrolytic capacitors 14 having terminals 15, 16 on one base face and a fixing frame at the other end part are inserted in bags made of air-bubble plastic sheet of tubular shape whose one end is welded to form an end and further having a terminal-protection part 13 made by folding the end part of the bag and welded to the welded part 12, and the bags 11 containing the electrolytic capacitor 14 are compactly packed in a box 18 of corrugated cardboard in alternating direction and flaps 191, 191, 192, 192 are closed and sealed; the electrolytic capacitors 14 having delicate terminals 15, 16 are safely and compactly packed in the box 18, and the terminals 15, 16 and the bent part of the fixing frames 17, are safely isolated by the bag.Type: GrantFiled: October 3, 1990Date of Patent: March 31, 1992Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiyuki Kitagawa, Hideharu Nagai, Tooru Yamaguchi, Fumiaki Kawaguchi
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Patent number: 5018123Abstract: In an optical information recording medium of the type wherein information is recorded or reproduced when a light beam scans each of a plurality of mutually parallel tracking tracks, an auxiliary track is extended between the adjacent tracking tracks and has at least one portion in parallel with the tracking tracks. In a method of recording or reproducing information by scanning a light beam on each of a plurality of mutually parallel tracking tracks on the recording medium, the recording medium has an auxiliary track which is extended between the adjacent tracking tracks and which has at least one portion in parallel with the tracking tracks and the light beam is kicked in the parallel portion of the auxiliary track.Type: GrantFiled: April 13, 1989Date of Patent: May 21, 1991Assignee: Canon Kabushiki KaishaInventors: Hideki Hosoya, Akio Aoki, Masahiko Enari, Masayuki Usui, Hiroshi Matsuoka, Kazuhiko Matsuoka, Kazuo Minoura, Kenichi Suzuki, Satoshi Shikichi, Fumiaki Kawaguchi
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Patent number: 5010534Abstract: There is disclosed an optical card recorder-reader, in which erroneous signal recording, caused by a low-level light beam when it is stopped at a position for a prolonged period between writing and/or reading operation, either by interruping the irradiation, or by reducing the power of irradiation, or by placing the light beam outside the recording area, when the recording or reading operation is not in progress.Type: GrantFiled: August 29, 1989Date of Patent: April 23, 1991Assignee: Canon Kabushiki KaishaInventors: Masahiko Enari, Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui, Hiroshi Matsuoka, Kazuhiko Matsuoka, Hideki Hosoya, Akio Aoki, Kazuo Minoura
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Patent number: 4922351Abstract: An optical information recording and reproducing apparatus comprises, an optical head for recording and reproducing information on and from a card-shaped optical recording medium, first means for relatively reciprocally moving said optical head to said card-shaped optical recording medium, and control means for controlling a relative speed between said optical head and said optical recording medium, said control means keeping a constant relative speed between said optical head and said optical recording medium in a record area of said optical recording medium and changing the relative speed between said optical head and said optical recording medium and reversing the direction of the relative movement between said optical head and said optical recording medium in areas outside of the record area.Type: GrantFiled: June 28, 1988Date of Patent: May 1, 1990Assignee: Canon Kabushiki KaishaInventors: Kenichi Suzuki, Satoshi Shikichi, Fumiaki Kawaguchi, Masayuki Usui, Hiroshi Matsuoka, Kazuhiko Matsuoka, Hideki Hosoya, Akio Aoki, Masahiko Enari, Kazuo Minoura
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Patent number: 4912697Abstract: Method and apparatus for recording information on a card-shaped optical information recording medium with a light beam and/or for reproducing information recorded on the medium. The apparatus includes a device for irradiating the medium with a light beam, a device for causing relative reciprocal movement between the medium and the light beam, and a device for terminating or displacing the light beam on the medium, after the lapse of a predetermined period of time from a moment when the relative speed of the medium and the light beam is reduced below a predetermined speed. The method includes the steps carried out by the apparatus.Type: GrantFiled: March 3, 1988Date of Patent: March 27, 1990Assignee: Canon Kabushiki KaishaInventors: Masahiko Enari, Satoshi Shikichi, Fumiaki Kawaguchi, Kenichi Suzuki, Masayuki Usui, Hiroshi Matsuoka, Kazuhiko Matsuoka, Hideki Hosoya, Akio Aoki, Kazuo Minoura
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Patent number: 4787075Abstract: An optical information recording medium in the form of a card having tracking tracks for obtaining a tracking signal and clock tracks for obtaining a clock signal arranged alternately and record zones for recording information between each of the tracking tracks and each of the clock tracks, and apparatus for recording/reproducing information using the recording medium.Type: GrantFiled: December 19, 1985Date of Patent: November 22, 1988Assignee: Canon Kabushiki KaishaInventors: Hiroshi Matsuoka, Akio Aoki, Hideki Hosoya, Kazuhiko Matsuoka, Masayuki Usui, Kazuo Minoura, Fumiaki Kawaguchi, Masahiko Enari, Kenichi Suzuki, Satoshi Shikichi
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Patent number: 4712117Abstract: A laser recording apparatus has a laser light source, an acousto-optical element for optically modulating the laser beam from the laser light source, a beam expander scanning optical system for optically scanning a diffracted light emerging from the acousto-optical element toward a recording surface, an f.theta. lens system for imaging the light passed through the scanning optical system on the recording surface, a first plate on which the laser light source and the acousto-optical element are disposed as a first unit, and a second plate on which the beam expander the scanning optical system and the f.theta. lens system are disposed as a second unit.Type: GrantFiled: October 29, 1985Date of Patent: December 8, 1987Assignee: Canon Kabushiki KaishaInventors: Fumiaki Kawaguchi, Toshikazu Shimazu, Kazuhisa Takahashi