Patents by Inventor Shigeyo Miyamori
Shigeyo Miyamori 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: 7452435Abstract: A functional film of the invention includes a microparticulate-containing layer containing functional microparticulates. The microparticulate-containing layer inhibits the occurrence of cracks even when drawn 10%. When the functional film includes a microparticulate-containing layer containing conductive microparticulates, the microparticulate-containing layer exhibits a surface resistivity after drawn 10% which is at most 10 times greater than the surface resistivity prior to drawing. The invention thus implements a functional film which is unsusceptible to reduction or loss of its function due to deformation.Type: GrantFiled: July 8, 2003Date of Patent: November 18, 2008Assignee: TDK CorporationInventors: Kiminori Tamai, Tadayoshi Iijima, Chieko Yamada, Shigeyo Miyamori
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Publication number: 20050233133Abstract: A functional film of the invention includes a microparticulate-containing layer containing functional microparticulates. The microparticulate-containing layer inhibits the occurrence of cracks even when drawn 10%. When the functional film includes a microparticulate-containing layer containing conductive microparticulates, the microparticulate-containing layer exhibits a surface resistivity after drawn 10% which is at most 10 times greater than the surface resistivity prior to drawing. The invention thus implements a functional film which is unsusceptible to reduction or loss of its function due to deformation.Type: ApplicationFiled: July 8, 2003Publication date: October 20, 2005Applicant: TDK CORPORATIONInventors: Kiminori Tamai, Tadayoshi Iijima, Chieko Yamada, Shigeyo Miyamori
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Publication number: 20050017384Abstract: The present invention provides a substrate for an optical disk using a transparent plastic film having a hard-coating layer on one surface of the film and a method of producing the same.Type: ApplicationFiled: June 8, 2004Publication date: January 27, 2005Inventors: Kiminori Tamai, Chieko Yamada, Katsuhiko Yamazaki, Yasufumi Takasugi, Kazuki Suzawa, Takashi Koshimizu, Shigeyo Miyamori, Kenichi Kitamura
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Patent number: 6617018Abstract: A functional film of the invention includes a microparticulate-containing layer containing functional microparticulates. The microparticulate-containing layer inhibits the occurrence of cracks even when drawn 10%. When the functional film includes a microparticulate-containing layer containing conductive microparticulates, the microparticulate-containing layer exhibits a surface resistivity after drawn 10% which is at most 10 times greater than the surface resistivity prior to drawing. The invention thus implements a functional film which is unsusceptible to reduction or loss of its function due to deformation.Type: GrantFiled: May 18, 2001Date of Patent: September 9, 2003Assignee: TDK CorporationInventors: Kiminori Tamai, Tadayoshi Iijima, Chieko Yamada, Shigeyo Miyamori
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Publication number: 20020037399Abstract: A functional film of the invention includes a microparticulate-containing layer containing functional microparticulates. The microparticulate-containing layer inhibits the occurrence of cracks even when drawn 10%. When the functional film includes a microparticulate-containing layer containing conductive microparticulates, the microparticulate-containing layer exhibits a surface resistivity after drawn 10% which is at most 10 times greater than the surface resistivity prior to drawing. The invention thus implements a functional film which is unsusceptible to reduction or loss of its function due to deformation.Type: ApplicationFiled: May 18, 2001Publication date: March 28, 2002Applicant: TDK CORPORATIONInventors: Kiminori Tamai, Tadayoshi Iijima, Chieko Yamada, Shigeyo Miyamori
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Patent number: 6214448Abstract: Disclosed is a magnetic recording medium excellent in surface properties, good in electromagnetic characteristics, and excellent in durability, which comprises a non-magnetic support and a magnetic layer formed thereon, wherein said magnetic layer contains a ferromagnetic powder, and as binders, at least a vinyl chloride resin having a S-containing polar group and a polyurethane resin having phosphobetaine and/or phosphamine as a polar group.Type: GrantFiled: March 25, 1999Date of Patent: April 10, 2001Assignee: TDK CorporationInventors: Hideki Sasaki, Naoyuki Nagashima, Masatoshi Uchida, Shigeyo Miyamori
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Patent number: 6168856Abstract: Disclosed is a magnetic recording medium excellent in surface properties, good in electromagnetic characteristics, and excellent in durability, which comprises a non-magnetic support and a magnetic layer formed thereon through a non-magnetic layer, in which the non-magnetic layer contains, as binders, a vinyl chloride resin having carboxylic acid and amine polar groups, and a polyurethane resin having phosphobetaine and/or phosphamine as a polar group.Type: GrantFiled: March 25, 1999Date of Patent: January 2, 2001Assignee: TDK CorporationInventors: Hideki Sasaki, Naoyuki Nagashima, Masatoshi Uchida, Shigeyo Miyamori
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Patent number: 4810555Abstract: In a magnetic recording medium comprising a substrate and a magnetic layer thereon, the magnetic layer is formed by coating a composition of a binder, preferably radiation-curable binder and a plate magnetic material such as hexagonal plate barium or strontium ferrite having an average particle diameter d expressed in .mu.m and an average flakiness R satisfying the following equations: 0.1<d.ltoreq.0.15 and R.gtoreq.280d-22, passing the coating through a magnetic field to orient the magnetic plates, and curing the coating.Type: GrantFiled: April 9, 1986Date of Patent: March 7, 1989Assignee: TDK CorporationInventors: Toru Shimozawa, Shigeyo Miyamori, Masaharu Nishimatsu
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Patent number: 4759966Abstract: In a coating type perpendicular magnetic recording medium intended for digital recording comprising a substrate and a magnetic layer thereon, the magnetic layer is formed from a composition of a binder, preferably radiation-curable binder and plate magnetic material such as hexagonal plate barium or strontium ferrit having an average particle diameter of up to 0.15 .mu.m and a flakiness of at least 6.Type: GrantFiled: April 21, 1986Date of Patent: July 26, 1988Assignee: TDK CorporationInventors: Toru Shimozawa, Shigeyo Miyamori, Masaharu Nishimatsu
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Patent number: 4726990Abstract: A coating type magnetic recording medium particuarly suitable as a mangetic disk is provided, which comprises a substrate and a magnetic layer of a plate magnetic powder and a binder on the substrate. Selection is made such that the plate magnetic powder has an average particle diameter of up to 0.2 .mu.m and an average flakiness of at least 2, the magnetic layer is up to 1.8 .mu.m thick, and the magnetic recording medium has a coercive force of a value x in Oe and a rectangular ratio Br/Bm of a value y both in a direction perpendicular to the magnetic layer surface, which fall in the range defined by the following equations:400.ltoreq.x.ltoreq.800, y.ltoreq.1, and0.5.ltoreq.y.ltoreq.0.75 where 750.ltoreq.x.ltoreq.800, and0.5.ltoreq.y.ltoreq.-0.001x+1.5 where 400.ltoreq.x<750.Type: GrantFiled: November 6, 1986Date of Patent: February 23, 1988Assignee: TDK CorporationInventors: Toru Shimozawa, Shigeyo Miyamori, Masaharu Nishimatsu
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Patent number: 4720411Abstract: In a magnetic recording medium comprising a substrate and a magnetic layer thereon, the magnetic layer is formed by coating a composition of a binder, preferably radiation-curable binder and a plate magnetic material such as hexagonal plate barium or strontium ferrite having an average particle diameter of up to 0.1 .mu.m and a flakiness of at least 6, passing the coating through a magnetic field to orient the magnetic plates, and curing the coating.Type: GrantFiled: March 14, 1986Date of Patent: January 19, 1988Assignee: TDK CorporationInventors: Toru Shimozawa, Shigeyo Miyamori, Masaharu Nishimatsu