Patents by Inventor Ichiro Okamoto
Ichiro Okamoto 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: 6337136Abstract: The present invention provides a support for a lithographic printing plate prepared by cold rolling a sheet while intermediate annealing is omitted to save energy and the number of the cold rolling steps are decreased to simplify the sheet production steps and to give a desired strength of the sheet, and by inhibiting precipitation of Si particles in the substrate to give extremely excellent resistance to ink staining in the nonimage areas during printing, and a process for producing a substrate therefore. The production process comprises homogenization heat-treating an aluminum alloy slab comprising 0.10 to 0.40 wt % of Fe, 0.03 to 0.15 wt % of Si, 0.004 to 0.Type: GrantFiled: July 28, 1999Date of Patent: January 8, 2002Assignees: Nippon Light Metal Company, Ltd., Fuji Photo Film Co., Ltd.Inventors: Hideki Suzuki, Ichiro Okamoto, Kazumitsu Mizushima, Tadashi Asahi, Hirokazu Sawada, Hirokazu Sakaki
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Patent number: 6238497Abstract: A method of producing an aluminum alloy fin stock material, comprising the steps of continuously strip casting an aluminum finstock alloy to form an as-cast strip, rolling the as-cast strip to form a sheet article of intermediate gauge, annealing the sheet article of intermediate gauge, and cold rolling the annealed sheet article of intermediate gauge to produce an aluminum finstock material of final gauge. The steps are carried out on a finstock alloy which comprises the following elements in weight percent: Fe 1.6 to 2.4; Si 0.7 to 1.1; Mn 0.3 to 0.6; Zn 0.3 to 2.0; Ti 0.005 to 0.040; incidental elements less than 0.05 each, total no more than 0.15; and the balance aluminum. The invention also relates to the finstock material so-produced which has good thermal conductivity, and is suitable for use in thin gauge (e.g. less than 100 &mgr;m, and preferably 60±10 &mgr;m).Type: GrantFiled: January 21, 2000Date of Patent: May 29, 2001Assignee: Alcan International LimitedInventors: Iljoon Jin, Kevin Gatenby, Willard Mark Truman Gallerneault, Toshiya Anami, Yoshito Oki, Ichiro Okamoto
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Publication number: 20010001402Abstract: An improved aluminum alloy fin stock is described having both a high strength and a high thermal conductivity. The fin stock contains 1.2-1.8% Fe, 0.7-0.95% Si, 0.3-0.5% Mn, 0.3-1.2% Zn and the balance Al, and is produced by continuously strip casting the alloy at a cooling rate greater than 10° C./sec. but less than 200° C./sec., hot rolling the strip to a re-roll sheet without homogenization, cold rolling the re-roll sheet to an intermediate gauge, annealing the sheet and cold rolling the sheet to final gauge. This fin stock has a conductivity after brazing of greater than 49.8% IACS.Type: ApplicationFiled: July 23, 1998Publication date: May 24, 2001Applicant: Iljoon Jin Et AlInventors: IIJOON JIN, JEAN-PIERRE MARTIN, WILLARD MARK TRUMAN GALLERNEAULT, TOSHIYA ANAMI, KEVIN MICHAEL GATENBY, ICHIRO OKAMOTO, YOSHITO OKI
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Patent number: 6159313Abstract: A continuous cast aluminum alloy strip is used in the production of thin gauge or converter foils. The alloy strip contains 0.4 to 0.8% by weigth Fe and 0.2 to 0.4% by weight Si, has an an cast thickness of less than about 30 mm and contains a substantially single intermetallic species of alpha-phase. The strip is cast using a continuous strip caster, e.g. a block or belt caster.Type: GrantFiled: April 29, 1999Date of Patent: December 12, 2000Assignee: Alcan International LimitedInventors: Iljoon Jin, John Fitzsimon, Masahiko Katano, Ichiro Okamoto
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Patent number: 5805469Abstract: A method and apparatus for determining an interpolated value for an audio data error sample included within a plurality of audio data samples. The audio data error sample may be replaced with the determined interpolated value so as to conceal the error sample. Such method and apparatus involves detecting an error pattern which corresponds to the presence or absence of errors of a number of data samples before and after the error sample to be concealed, obtaining coefficients based upon the detected error pattern, and processing the audio data samples and coefficients in a manner corresponding to an interpolating equation of an nth degree (where n=1, 2, 3 . . . ) so as to obtain the interpolated value. Such interpolating equation may correspond to a Lagrange polynomial equation.Type: GrantFiled: November 21, 1996Date of Patent: September 8, 1998Assignee: Sony CorporationInventors: Ichiro Okamoto, Kazuhiko Ozawa, Isao Miyai, Shinji Nakamura
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Patent number: 5604012Abstract: A hollow fiber fabric comprising hollow fibers having a high hollowness ratio of at least 20% and composed of a polymer of a single composition, and the hollow fibers having slits as traces of a removed polymer and the slits being formed in the longitudinal direction of the fibers in such a state that the slits communicate to hollow portions. The fabric is produced by treating a fabric comprising hollow fibers having a high hollowness ratio of at least 20% and composed of a polymer of a single composition with a solvent or solution which dissolves the polymer, to partially dissolve the polymer at low orientation and/or deformation strain concentrated portions, to form slits as traces of a removed polymer in such a state that the slits communicate to hollow portions, along the longitudinal direction of the hollow fibers.Type: GrantFiled: August 30, 1995Date of Patent: February 18, 1997Assignee: Teijin LimitedInventors: Ichiro Okamoto, Tsuguo Fujiwara, Hiroya Murase, Shigenobu Kobayashi
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Patent number: 5539586Abstract: Each track on a recording medium has a video area used for recording video and audio data, and an audio area used exclusively for recording audio data. The audio area has two regions used for recording odd-numbered audio data segments and even-numbered audio data segments, respectively. The data recorded in one of the two regions may be interleaved to further reduce vulnerability of the audio data to errors. Parity data for the audio data is recorded in a third region located between the first and second regions in each track. The audio data represents a left and a right channel. The left channel audio data is recorded in a first set of consecutive tracks, and the right channel audio data is recorded in a second set of consecutive tracks.Type: GrantFiled: March 16, 1995Date of Patent: July 23, 1996Assignee: Sony CorporationInventors: Hajime Inoue, Ichiro Okamoto
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Patent number: 5493414Abstract: A method of dubbing compressed digital video signals adopted for an apparatus for efficient coding and subsequent recording/playback of video signals. In the method of dubbing compressed digital video signals, on a playback unit side, after padding error data by an error processing circuit with respect to an error uncorrectable in error correction by an ECC circuit of playback, the digital video signal is provided with a parity for transmission by a parity generating circuit and is then transmitted to a recording unit side. On the other hand, on the recording unit side, after padding error data by an error processing circuit with respect to an error uncorrectable in error correction by an ECC circuit of transmission, the digital video signal is provided with a parity for recording by a parity generator and is then recorded in a recording medium.Type: GrantFiled: November 17, 1993Date of Patent: February 20, 1996Assignee: Sony CorporationInventors: Hajime Inoue, Hiroyuki Ishimaru, Hisato Shima, Kazuyuki Ogawa, Masaki Oguro, Ichiro Okamoto
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Patent number: 5489387Abstract: Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.Type: GrantFiled: February 17, 1995Date of Patent: February 6, 1996Assignee: Daicel Chemical Industries, Ltd.Inventors: Hajime Namikoshi, Tohru Shibata, Ichiro Okamoto
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Patent number: 5472599Abstract: A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers.Type: GrantFiled: March 9, 1995Date of Patent: December 5, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Tohru Shibata, Hajime Namikoshi, Ichiro Okamoto
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Patent number: 5440404Abstract: A transform unit obtains a discrete cosine coefficient by processing an image signal in a discrete cosine transform fashion per unit of a predetermined data amount. A memory includes therein a plurality of quantization tables corresponding to quantization accuracies different from each other, and a memory includes therein a variable length coding table. A quantization unit quantizes the discrete cosine coefficient with reference to a selected one of the plurality of quantization tables. An encoding unit obtains encoded data by processing the quantized discrete cosine coefficient in a variable length coding fashion. A code amount adding unit obtains total amount data indicative of a total amount of the encoded data corresponding to the predetermined data amount.Type: GrantFiled: January 13, 1994Date of Patent: August 8, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Ichiro Okamoto
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Patent number: 5415780Abstract: Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.Type: GrantFiled: August 4, 1994Date of Patent: May 16, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Hajime Namikoshi, Tohru Shibata, Ichiro Okamoto
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Patent number: 5415769Abstract: A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers.Type: GrantFiled: April 19, 1994Date of Patent: May 16, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Tohru Shibata, Hajime Namikoshi, Ichiro Okamoto
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Patent number: 5368737Abstract: Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.Type: GrantFiled: November 22, 1993Date of Patent: November 29, 1994Assignee: Daicel Chemical Industries, Ltd.Inventors: Hajime Namikoshi, Tohru Shibata, Ichiro Okamoto
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Patent number: 5334311Abstract: A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of optical isomers.Type: GrantFiled: September 15, 1993Date of Patent: August 2, 1994Assignee: Daicel Chemical Industries, Ltd.Inventors: Tohru Shibata, Hajime Namikoshi, Ichiro Okamoto
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Patent number: 5315445Abstract: An audio signal recording apparatus and method for recording an video signal (e.g., a half field) and at least four channels of audio signals corresponding to the video signal to a plurality of tracks on a tape. The audio signals are recorded to recording blocks in an audio recording area which are separated from a recording area for the corresponding video signal in accordance with a priority rating. More specifically, the at least four channels of audio signals are divided into groups each having a plurality of channels. The audio signal recording area is divided into a plurality of recording blocks in the longitudinal direction of the tracks and each group of audio data is recorded to one of the audio signal recording blocks. Each group of audio data is assigned a priority rating depending on the importance of the data contained therein. Audio data having a high priority are recorded to blocks that are located further away from the track ends than those for audio data having a low priority.Type: GrantFiled: September 5, 1991Date of Patent: May 24, 1994Assignee: Sony CorporationInventors: Kenji Fukumoto, Ichiro Okamoto, Keitaro Yamashita
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Patent number: 5268098Abstract: A separation agent essentially comprises an aliphatic or aromatic ester of a polysaccharide, except for cellulose acetate and an aromatic ester of cellulose. It is useful for separation of various chemical substances, especially optical resolution of opticl isomers.Type: GrantFiled: December 18, 1992Date of Patent: December 7, 1993Assignee: Daicel Chemical Industries, Ltd.Inventors: Tohru Shibata, Hajime Namikoshi, Ichiro Okamoto
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Patent number: 5260789Abstract: An image memory device uses two line memories in a memory array of a field memory in lieu of an externally mounted line memory. Further, an instruction of bi-directional transfer between a memory array and an output buffer memory is used. Thereby, a motion picture discontinuity phenomenon can be avoided even if a motion picture video signal is asynchronously input and output.Type: GrantFiled: May 28, 1991Date of Patent: November 9, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Ichiro Okamoto
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Patent number: 5229002Abstract: Separation of a chemical substance is effected by treating a mixture thereof with a polysaccharide having a substituent for hydroxyl group an acyl group of the formula (1) or a carbamoyl group of the formula (2): ##STR1## wherein R represents an atomic group having a nucleus comprising a conjugated .pi.-bond system in which the number of bonds interposed between an atom contained therein and bonded with the carbonyl or amino group and an atom contained in the .pi.-bond system and most distant from said atom is at least 5 even in the shortest route.Type: GrantFiled: May 26, 1992Date of Patent: July 20, 1993Assignee: Daicel Chemical Industries, Ltd.Inventors: Hajime Nakikoshi, Tohru Shibata, Ichiro Okamoto
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Patent number: RE34457Abstract: A mixture of chemical substances such as optical isomers, geometrical isomers and polymers having different molecular weight ranges is separated to each ingredient by use of a cellulose derivative having an aromatic ring in the chromatographic method.Type: GrantFiled: November 24, 1992Date of Patent: November 30, 1993Assignee: Daicel Chemical Industries, Inc.Inventors: Yoshio Okamoto, Koichi Hatada, Tohru Shibata, Ichiro Okamoto, Hiroyuki Nakamura