Patents by Inventor Shiro Murakami
Shiro Murakami 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: 8791766Abstract: A piezoelectric resonating element includes a piezoelectric substrate having a rectangular vibrating portion and a thick-walled portion, excitation electrodes and, and lead electrodes. The thick-walled portion includes a fourth thick-walled portion, a third thick-walled portion, a first thick-walled portion, and a second thick-walled portion. The third thick-walled portion includes a third slope portion and a third thick-walled body, and at least one slit is formed in the third thick-walled portion.Type: GrantFiled: August 16, 2012Date of Patent: July 29, 2014Assignee: Seiko Epson CorporationInventors: Osamu Ishii, Shiro Murakami
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Patent number: 8638022Abstract: A vibrating element includes: an element plate that has a vibrating portion that performs thickness-shear vibration, a peripheral portion that is integrally formed with the vibrating portion, and a protruding portion that is provided at the peripheral portion; and an excitation electrode that is provided at the vibrating portion. When a side length of the vibrating portion is Mx, when a side length of the excitation electrode is Ex, and when a wavelength of flexure vibrations of the element plate is ?, the relationship of (Mx?Ex)/2=?/2, and Mx/2={(A/2)+(¼)}? (where, A is a positive integer) is satisfied, and when a length of the protruding portion is Dx, and when a distance between the vibrating portion and the protruding portion is Sx, the relationship of Dx=?/2)×m, and (?/2)×n?0.1??Sx?(?/2)×n+0.1? (where m and n are positive integers) is satisfied.Type: GrantFiled: July 26, 2013Date of Patent: January 28, 2014Assignee: Seiko Epson CorporationInventors: Go Yamashita, Kenji Komine, Shiro Murakami
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Publication number: 20130307377Abstract: A vibrating element includes: an element plate that has a vibrating portion that performs thickness-shear vibration, a peripheral portion that is integrally formed with the vibrating portion, and a protruding portion that is provided at the peripheral portion; and an excitation electrode that is provided at the vibrating portion. When a side length of the vibrating portion is Mx, when a side length of the excitation electrode is Ex, and when a wavelength of flexure vibrations of the element plate is ?, the relationship of (Mx?Ex)/2=?/2, and Mx/2={(A/2)+(¼)}? (where, A is a positive integer) is satisfied, and when a length of the protruding portion is Dx, and when a distance between the vibrating portion and the protruding portion is Sx, the relationship of Dx=?/2)×m, and (?/2)×n?0.1??Sx?(?/2)×n+0.1? (where m and n are positive integers) is satisfied.Type: ApplicationFiled: July 26, 2013Publication date: November 21, 2013Applicant: Seiko Epson CorporationInventors: Go YAMASHITA, Kenji KOMINE, Shiro MURAKAMI
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Patent number: 8536761Abstract: A piezoelectric resonator includes: a piezoelectric plate having a vibrating portion surrounded by a peripheral portion; and an excitation electrode on the piezoelectric plate, wherein long sides of the vibrating portion and excitation electrode are parallel to a piezoelectric plate long side. Assuming a piezoelectric plate long side length X, a vibrating portion thickness t, a vibrating portion long side length Mx, an excitation electrode long side length Ex, and a piezoelectric plate flexure vibration wavelength ?, ?/2=(1.332/f)?0.0024 (piezoelectric resonator resonance frequency f), (Mx?Ex)/2=?/2, Mx/2={(A/2)+(1/4)}? (where, A is a positive integer), and X?20t. A protruding portion is disposed on a vibrating portion extension line and parallel to a vibrating portion short side. Assuming a protruding portion length Dx, Dx=(?/2)×m (where, m is a positive integer). Assuming a distance Sx between the vibrating and protruding portions, Sx=(?/2)×n±0.1? (where, n is a positive integer).Type: GrantFiled: October 21, 2010Date of Patent: September 17, 2013Assignee: Seiko Epson CorporationInventors: Go Yamashita, Kenji Komine, Shiro Murakami
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Publication number: 20130043960Abstract: A piezoelectric resonating element includes a piezoelectric substrate having a rectangular vibrating portion and a thick-walled portion, excitation electrodes and, and lead electrodes. The thick-walled portion includes a fourth thick-walled portion, a third thick-walled portion, a first thick-walled portion, and a second thick-walled portion. The third thick-walled portion includes a third slope portion and a third thick-walled body, and at least one slit is formed in the third thick-walled portion.Type: ApplicationFiled: August 16, 2012Publication date: February 21, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Osamu ISHII, Shiro MURAKAMI
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Publication number: 20110095657Abstract: A piezoelectric resonator includes: a piezoelectric plate having a vibrating portion surrounded by a peripheral portion; and an excitation electrode on the piezoelectric plate, wherein long sides of the vibrating portion and excitation electrode are parallel to a piezoelectric plate long side. Assuming a piezoelectric plate long side length X, a vibrating portion thickness t, a vibrating portion long side length Mx, an excitation electrode long side length Ex, and a piezoelectric plate flexure vibration wavelength ?, ?/2=(1.332/f)?0.0024 (piezoelectric resonator resonance frequency f), (Mx?Ex)/2=?/2, Mx/2={(½)+(¼)}? (where, I=1, 2, 3, . . . ), and X?20 t. A protruding portion is disposed on a vibrating portion extension line and parallel to a vibrating portion short side. Assuming a protruding portion length Dx, Dx=(?/2)×m (where, m=1, 2, 3, . . . ). Assuming a distance Sx between the vibrating and protruding portions, Sx=(?/2)×n±0.1? (where, n=1, 2, 3, . . . ).Type: ApplicationFiled: October 21, 2010Publication date: April 28, 2011Applicant: SEIKO EPSON CORPORATIONInventors: Go YAMASHITA, Kenji KOMINE, Shiro MURAKAMI
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Patent number: 7061355Abstract: A ferrite core for use in coupling transformers and distributing transformers in CATV equipments such as couplers, distributors and amplifiers, the ferrite core being made of a ferrite having a saturation magnetostriction |?S| of 8×10?6 or less in an absolute value and an initial permeability ?i of 300 or more.Type: GrantFiled: August 28, 2003Date of Patent: June 13, 2006Assignee: Hitachi Metals, Ltd.Inventors: Satoru Tanaka, Norikazu Koyuhara, Makoto Kadowaki, Yoshihito Yoshikawa, Shiro Murakami
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Patent number: 6756329Abstract: A synthetic fiber capable of absorbing and disabsorbing moisture comprising a component capable of absorbing and disabsorbing moisture and a fiber-forming polymer. The fiber of the present invention has a moisture absorption of 1.5% or more when it is allowed to reach a moisture equilibrium under the circumstance of 25° C.×60%RH and then is allowed to stand for 30 min. under the circumstance of 34° C.×90%RH, and has a moisture disabsorption of 2% or more when it is allowed to reach a moisture equilibrium under the circumstance of 34° C.×90%RH and then is allowed to stand for 30 min. under the circumstance of 25° C.×60%RH. The fiber also has a value of −1 to 5 in terms of b value in the CIE-LAB color system when it is allowed to stand for 30 days.Type: GrantFiled: September 19, 2000Date of Patent: June 29, 2004Assignee: Unitika Ltd.Inventors: Mitsuhiro Umino, Kunio Akasaki, Yoshiaki Kurushima, Kazuyuki Ono, Hajime Yamaguchi, Shigemitsu Murase, Shiro Murakami, Kuzuaki Taruishi
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Publication number: 20040113742Abstract: A ferrite core for use in coupling transformers and distributing transformers in CATV equipments such as couplers, distributors and amplifiers, the ferrite core being made of a ferrite having a saturation magnetostriction |&lgr;s| of 8×10−6 or less in an absolute value and an initial permeability &mgr;i of 300 or more.Type: ApplicationFiled: August 28, 2003Publication date: June 17, 2004Applicant: HITACHI METALS, LTD.Inventors: Satoru Tanaka, Norikazu Koyuhara, Makoto Kadowaki, Yoshihito Yoshizawa, Shiro Murakami
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Patent number: 5167096Abstract: Method and apparatus for texturing a substrate for use in a magnetic recording disc. A texturing pad used in the invention has inner and outer coaxial regions, with the outer region being more compressible. When the pad and a substrate are rotated about parallel, offset axes, and pressed against one another in the presence of a particle slurry, the inner, less compressible region of the pad produces a deeper-groove texturing on an inner annular surface region of the disc.Type: GrantFiled: February 26, 1990Date of Patent: December 1, 1992Assignee: HMT Technology CorporationInventors: Atef Eltoukhy, Yassin Mehmandoust, Shiro Murakami
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Patent number: 4835640Abstract: A magnetic recording device comprises a magnetic disk having a magnetic recording layer formed on a substrate, a slider, a magnetic core attached to the slider, and a magnetic head adapted to be brought into contact with and separated from the surface of the magnetic disk. In this magnetic recording device, the magnetic recording layer of the magnetic disk is made of a Co-based alloy and the slider of the magnetic head has stabilized zirconia as the main phase thereof.Type: GrantFiled: November 19, 1987Date of Patent: May 30, 1989Assignee: Hitachi Metals Ltd.Inventors: Juro Endo, Shiro Murakami, Yukiharu Takada, Yoshiharu Koike
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Patent number: 4774130Abstract: A magnetic recording medium has a magnetic film formed on the surface of a substrate and a protective film further formed on the surface of the magnetic film. The protective film is composed of a first layer containing at least one substance selected from the group consisting of Cr.sub.2 O.sub.3, Si, and Ge and a second layer of amorphous carbon or graphite containing amorphous carbon deposited on the front side of the first layer.Type: GrantFiled: December 30, 1985Date of Patent: September 27, 1988Assignee: Hitachi Metals, Ltd.Inventors: Juro Endo, Shiro Murakami, Shigeo Fujii, Shigeru Oguma, Masayuki Nakao
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Patent number: 4735523Abstract: A vibratory compaction working machine has a lower travel structure and an upper swing structure mounted on the lower travel structure. The upper swing structure has a boom mounted thereon for pivotal movement by a first hydraulic cylinder, an arm mounted on the boom at its forward end for pivotal movement by a second hydraulic cylinder, and vibratory plate compactor mounted on the arm at its forward end for pivotal movement by a third hydraulic cylinder. The arm is in the form of an extension arm having a first arm element and a second arm element mounted for linear movement relative to the first arm element by a fourth hydraulic cylinder. The first arm element is attached at the forward end of the boom for pivotal movement by the second hydraulic cylinder, and the second arm element has the vibratory plate compactor attached to the forward end thereof for pivotal movement by the third hydraulic cylinder.Type: GrantFiled: June 25, 1986Date of Patent: April 5, 1988Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Yasuaki Ishikawa, Hirokazu Miyagawa, Shiro Murakami, Hiroshi Koma, Yutaka Ikeda, Yoshifumi Itou
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Patent number: 4709284Abstract: A magnetic recording device comprises a magnetic disk having a magnetic recording layer formed on a substrate, a slider, a magnetic core attached to the slider, and a magnetic head adapted to be brought into contact with and separated from the surface of the magnetic disk. In this magnetic recording device, the magnetic recording layer of the magnetic disk is made of a Co-based alloy and the slider of the magnetic head has stabilized zirconia as the main phase thereof.Type: GrantFiled: September 19, 1985Date of Patent: November 24, 1987Assignee: Hitachi Metals, Ltd.Inventors: Juro Endo, Shiro Murakami, Yukiharu Takada, Yoshiharu Koike
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Patent number: 4663193Abstract: A manufacturing process of Co-Ni magnetic recording media by sputtering Co-Ni thin film layer on a substrate in Argon atomsphere including nitrogen and heating the thin film to evaporate nitrogen from the thin film to prepare the magnetic recording media appropriate for high density longitudinal recording, wherein on sputtering the substrate is maintained at a temperature of room temperature to 300.degree. C.Type: GrantFiled: December 26, 1984Date of Patent: May 5, 1987Assignee: Hitachi Metals, Ltd.Inventors: Juro Endo, Shiro Murakami, Shigeo Fujii, Masayuki Nakao, Tsutomu Iimura
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Patent number: 4645690Abstract: A manufacturing process of Co-Ni magnetic recording media by sputtering Co-Ni thin film layer on a substrate in Argon atmosphere including oxygen or air and heating the thin film to evaporate oxygen or air from the layer to prepare the magnetic recording media appropriate for high density longitudinal recording, wherein on sputtering the substrate is maintained at a temperature of room temperature to 300.degree. C.Type: GrantFiled: February 1, 1985Date of Patent: February 24, 1987Assignee: Hitachi Metals, Ltd.Inventors: Shiro Murakami, Shigeo Fujii, Masayuki Nakao, Yoshio Igarashi, Juro Endo
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Patent number: 4079898Abstract: Disclosed is a doffing and donning machine used for a textile machine such as a false-twisting machine or a draw-texturing machine in which a plurality of winding units is arranged in several rows and in several stages on the package stand; a travelling carriage travels along the package stand and has at least two subtrucks which can approach near the winding units and move far from the winding units on each of said subtrucks a doffing and donning mechanism is mounted.Type: GrantFiled: November 26, 1976Date of Patent: March 21, 1978Assignees: Teijin Limited, Teijin Seiki Co., Ltd.Inventors: Shiro Murakami, Takeshi Kato
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Patent number: 3950928Abstract: Draw-texturing for synthetic fibers is efficiently carried out by means of a draw-texturing apparatus having a novel arrangement and construction wherein the draw-false-twisting body proper is arranged through and beyond an intermediate floor. Package supply means are located on said intermediate floor in opposing relation in the upper portion of said body proper, a first operational floor is formed between said package supply means and the upper portion of said body proper, take-up means are placed on the apparatus base floor in opposing relation in the lower portion of said body proper and a second operational floor having yarn passages underneath is formed between the lower portion of said body proper and said take-up means.Type: GrantFiled: May 6, 1975Date of Patent: April 20, 1976Assignee: Teijin LimitedInventors: Shiro Murakami, Kikuo Hori