Patents by Inventor Hidemi Isomura
Hidemi Isomura 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: 9099105Abstract: An information recording medium of the present exemplified embodiment is configured by laminating a substrate having a predetermined thickness and a substrate having a predetermined thickness to each other. A film forming region including a recording region, a clamp region and a rib are formed on one surface of the information recording medium. A film forming region including a recording region, a clamp region and a rib are formed on the other surface of the information recording medium. On both surfaces, the components are formed in the order of the rib, the clamp region and the film forming region toward an outer peripheral side from an inner peripheral side.Type: GrantFiled: January 22, 2015Date of Patent: August 4, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Mamoru Shoji, Yoshihiro Kawasaki, Shuji Tabuchi, Hidemi Isomura, Kazuya Hisada
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Publication number: 20150213829Abstract: An information recording medium of the present exemplified embodiment is configured by laminating a substrate having a predetermined thickness and a substrate having a predetermined thickness to each other. A film forming region including a recording region, a clamp region and a rib are formed on one surface of the information recording medium. A film forming region including a recording region, a clamp region and a rib are formed on the other surface of the information recording medium. On both surfaces, the components are formed in the order of the rib, the clamp region and the film forming region toward an outer peripheral side from an inner peripheral side.Type: ApplicationFiled: January 22, 2015Publication date: July 30, 2015Inventors: Mamoru SHOJI, Yoshihiro KAWASAKI, Shuji TABUCHI, Hidemi ISOMURA, Kazuya HISADA
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Patent number: 9015735Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at an angle greater than or equal to 25 degrees and less than or equal to 35 degrees with respect to the non-inclined surface.Type: GrantFiled: December 1, 2014Date of Patent: April 21, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Mamoru Shoji, Shuji Tabuchi, Yoshihiro Kawasaki, Hidemi Isomura
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Publication number: 20150089516Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at an angle greater than or equal to 25 degrees and less than or equal to 35 degrees with respect to the non-inclined surface.Type: ApplicationFiled: December 1, 2014Publication date: March 26, 2015Inventors: Mamoru SHOJI, Shuji TABUCHI, Yoshihiro KAWASAKI, Hidemi ISOMURA
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Patent number: 8930974Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at a predetermined angle to the non-inclined surface and is larger than the non-inclined surface in the thin portion.Type: GrantFiled: August 7, 2013Date of Patent: January 6, 2015Assignee: Panasonic CorporationInventors: Mamoru Shoji, Shuji Tabuchi, Yoshihiro Kawasaki, Hidemi Isomura
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Publication number: 20140047463Abstract: The disk-shaped information recording medium having an outer diameter and an inner diameter comprises a substrate having a predetermined thickness, a first side that is one side of the substrate, a second side that is the other side of the substrate, a cylindrical portion forming a through hole formed at a center of the substrate, and a thin portion formed so as to surround an outer diameter of the cylindrical portion. The thin portion is thinner than the predetermined thickness and includes a non-inclined surface and an inclined surface formed on an outer diameter side of the non-inclined surface. The inclined surface is inclined at a predetermined angle to the non-inclined surface and is larger than the non-inclined surface in the thin portion.Type: ApplicationFiled: August 7, 2013Publication date: February 13, 2014Applicant: Panasonic CorporationInventors: Mamoru SHOJI, Shuji Tabuchi, Yoshihiro Kawasaki, Hidemi Isomura
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Patent number: 6982016Abstract: An optical information recording medium is manufactured by bonding a first substrate having a first central bore and a second substrate having a second central bore to each other with radiation cure resin. The radiation cure resin is coated on the first substrate. The first and second substrates are brought into close contact with each other so as to form the first and second substrates integrally with the radiation cure resin. A neighborhood of the first and second central bores is radiated. A whole of at least one of opposite outer faces of the integral first and second substrates is irradiated with radiation so as to wholly cure the radiation cure resin.Type: GrantFiled: July 25, 2003Date of Patent: January 3, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Hideo Matsumoto, Kazuhiro Hayashi, Kazuya Hisada, Kazuo Inoue
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Patent number: 6977018Abstract: An optical information recording medium is manufactured by bonding a first substrate having a first central bore and a second substrate having a second central bore to each other with radiation cure resin. The radiation cure resin is coated on the first substrate. The first and second substrates are brought into close contact with each other so as to form the first and second substrates integrally with the radiation cure resin. A neighborhood of the first and second central bores is radiated. A whole of at least one of opposite outer faces of the integral first and second substrates is irradiated with radiation so as to wholly cure the radiation cure resin.Type: GrantFiled: May 28, 2003Date of Patent: December 20, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Hideo Matsumoto, Kazuhiro Hayashi, Kazuya Hisada, Kazuo Inoue
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Publication number: 20040129363Abstract: An optical information recording medium is manufactured by bonding a first substrate having a first central bore and a second substrate having a second central bore to each other with radiation cure resin. The radiation cure resin is coated on the first substrate. The first and second substrates are brought into close contact with each other so as to form the first and second substrates integrally with the radiation cure resin. A neighborhood of the first and second central bores is radiated. A whole of at least one of opposite outer faces of the integral first and second substrates is irradiated with radiation so as to wholly cure the radiation cure resin.Type: ApplicationFiled: July 25, 2003Publication date: July 8, 2004Inventors: Eiji Ohno, Hidemi Isomura, Hideo Matsumoto, Kazuhiro Hayashi, Kazuya Hisada, Kazuo Inoue
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Patent number: 6706359Abstract: An optical information recording medium includes a reflective film, a recording film and a protective film on a substrate. The protective film is provided with a surface layer on a side opposite to the substrate. On an outer layer of at least one selected from the substrate and the protective film, a hard coat resin layer is formed. On an outer layer of the hard coat resin layer, a chemisorptive film including organic silane molecules represented by the general formula R4-m-nSiR′mZn—(wherein R is a group including a carbon chain with a carbon number of 3 to 25, Z is O, N or S, n is 1, 2 or 3, R′ is hydrogen or an alkyl group with a carbon number of 1 to 3, and m is 0, 1 or 2) is formed by covalent bonding with the hard coat layer.Type: GrantFiled: March 22, 2002Date of Patent: March 16, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Norihisa Mino, Eiji Ohno, Hidemi Isomura
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Publication number: 20030201065Abstract: An optical information recording medium is manufactured by bonding a first substrate having a first central bore and a second substrate having a second central bore to each other with radiation cure resin. The radiation cure resin is coated on the first substrate. The first and second substrates are brought into close contact with each other so as to form the first and second substrates integrally with the radiation cure resin. A neighborhood of the first and second central bores is radiated. A whole of at least one of opposite outer faces of the integral first and second substrates is irradiated with radiation so as to wholly cure the radiation cure resin.Type: ApplicationFiled: May 28, 2003Publication date: October 30, 2003Inventors: Eiji Ohno, Hidemi Isomura, Hideo Matsumoto, Kazuhiro Hayashi, Kazuya Hisada, Kazuo Inoue
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Patent number: 6613170Abstract: An optical information recording medium is manufactured by bonding a first substrate having a first central bore and a second substrate having a second central bore to each other with radiation cure resin. The radiation cure resin is coated on the first substrate. The first and second substrates are brought into close contact with each other so as to form the first and second substrates integrally with the radiation cure resin. A neighborhood of the first and second central bores is radiated. A whole of at least one of opposite outer faces of the integral first and second substrates is irradiated with radiation so as to wholly cure the radiation cure resin.Type: GrantFiled: April 12, 2000Date of Patent: September 2, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Hideo Matsumoto, Kazuhiro Hayashi, Kazuya Hisada, Kazuo Inoue
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Publication number: 20020176957Abstract: An optical information recording medium includes a reflective film, a recording film and a protective film on a substrate. The protective film is provided with a surface layer on a side opposite to the substrate. On an outer layer of at least one selected from the substrate and the protective film, a hard coat resin layer is formed. On an outer layer of the hard coat resin layer, a chemisorptive film including organic silane molecules represented by the general formula R4-m-nSiR′mZn—(wherein R is a group including a carbon chain with a carbon number of 3 to 25, Z is O, N or S, n is 1, 2 or 3, R′ is hydrogen or an alkyl group with a carbon number of 1 to 3, and m is 0, 1 or 2) is formed by covalent bonding with the hard coat layer.Type: ApplicationFiled: March 22, 2002Publication date: November 28, 2002Inventors: Norihisa Mino, Eiji Ohno, Hidemi Isomura
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Patent number: 6447869Abstract: An optical information recording medium includes a first substrate; at least a first dielectric layer and a recording layer for signal recording provided on a surface of the first substrate; and a second substrate. The first substrate and the second substrate are assembled together in the state of being warped in planar symmetry and flattened. The first dielectric layer and the recording layer is interposed between the first substrate and the second substrate.Type: GrantFiled: April 24, 2001Date of Patent: September 10, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Akihiro Moteki
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Patent number: 6291046Abstract: An optical information recording medium includes a first substrate; at least a first dielectric layer and a recording layer for signal recording provided on a surface of the first substrate; and a second substrate. The first substrate and the second substrate are assembled together in the state of being warped in planar symmetry and flattened. The first dielectric layer and the recording layer is interposed between the first substrate and the second substrate.Type: GrantFiled: November 8, 1999Date of Patent: September 18, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Akihiro Moteki
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Publication number: 20010019753Abstract: An optical information recording medium includes a first substrate; at least a first dielectric layer and a recording layer for signal recording provided on a surface of the first substrate; and a second substrate. The first substrate and the second substrate are assembled together in the state of being warped in planar symmetry and flattened. The first dielectric layer and the recording layer is interposed between the first substrate and the second substrate.Type: ApplicationFiled: April 24, 2001Publication date: September 6, 2001Applicant: Matsushita Electric Industrial Co. Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Akihiro Moteki
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Patent number: 6261661Abstract: An optical information recording medium includes a first substrate; at least a first dielectric layer and a recording layer for signal recording provided on a surface of the first substrate; and a second substrate. The first substrate and the second substrate are assembled together in the state of being warped in planar symmetry and flattened. The first dielectric layer and the recording layer is interposed between the first substrate and the second substrate.Type: GrantFiled: September 5, 2000Date of Patent: July 17, 2001Assignee: Matsushita Electrical Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Akihiro Moteki
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Patent number: 6165578Abstract: An optical information recording medium includes a first substrate; at least a first dielectric layer and a recording layer for signal recording provided on a surface of the first substrate; and a second substrate. The first substrate and the second substrate are assembled together in the state of being warped in planar symmetry and flattened. The first dielectric layer and the recording layer is interposed between the first substrate and the second substrate.Type: GrantFiled: July 21, 1998Date of Patent: December 26, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Ohno, Hidemi Isomura, Akihiro Moteki
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Patent number: 5989654Abstract: A method for manufacturing an optical information recording medium which is usually stable and is not affected by the environmental condition and an apparatus used therefor. The method comprises the steps of placing a substrate and a member comprising a material for a film opposing each other in a vacuum film forming chamber; forming a plasma by glow discharging a gas between the substrate and the member comprising a material for a film; and supplying a gas mixture containing water to the film forming chamber before forming films or during forming films of the protective layer by the film forming method in which the material for a film freed from the member comprising a material for a film by using the plasma as an energy source are attached or deposited on the substrate.Type: GrantFiled: July 7, 1997Date of Patent: November 23, 1999Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazumi Yoshioka, Eiji Ohno, Hidemi Isomura, Hiroyuki Ohta
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Patent number: 5674649Abstract: On one surface of a disk substrate, a first dielectric layer, a thin recording layer, a second dielectric layer and a reflecting layer are cumulatively formed. The second dielectric layer is thinner than the first dielectric layer and is 35-70 nm thick. The reflecting layer is 70-120 nm thick. The total thickness of the four layers is 250-430 nm. The compressive stress of the layers is offset by tensile stress generated by an overcoat resin protective layer, formed on the reflecting layer. A method of using the optical recording medium applies the MCAV (Modified Constant Angular Velocity) recording method which records information by changing recording frequencies in accordance with linear velocity. The linear velocity is 5-12 m/s. A ratio of an inner circumference recording pulse width to an outer circumference recording pulse width is 1.2 or more.Type: GrantFiled: April 23, 1996Date of Patent: October 7, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazumi Yoshioka, Tetsuya Akiyama, Takeo Ohta, Hidemi Isomura