Patents by Inventor Atsushi Sasayama
Atsushi Sasayama 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: 8578945Abstract: A hair extension that exhibits voluminousness at hair roots and makes the hair puffy when attached to the head of a wearer, a hair ornament using the same, and a method for producing the hair extension. The hair extension of the present invention includes at least main fibers (1) and root fibers (2), wherein the root fibers (2) are crimped fibers having a shorter fiber length in comparison with the main fibers (1) and not longer than 10 cm, and the main fibers (1) and the root fibers (2) are blended and integrated by sewing. In the method for producing the aforesaid hair extension, the root fibers may be blended with the main fibers and then shrunk to crimp. Alternatively, previously-crimped fibers may be used as the root fibers and blended with the main fibers.Type: GrantFiled: September 25, 2009Date of Patent: November 12, 2013Assignee: Kaneka CorporationInventor: Atsushi Sasayama
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Publication number: 20110271976Abstract: A hair extension that exhibits voluminousness at hair roots and makes the hair puffy when attached to the head of a wearer, a hair ornament using the same, and a method for producing the hair extension. The hair extension of the present invention includes at least main fibers (1) and root fibers (2), wherein the root fibers (2) are crimped fibers having a shorter fiber length in comparison with the main fibers (1) and not longer than 10 cm, and the main fibers (1) and the root fibers (2) are blended and integrated by sewing. In the method for producing the aforesaid hair extension, the root fibers may be blended with the main fibers and then shrunk to crimp. Alternatively, previously-crimped fibers may be used as the root fibers and blended with the main fibers.Type: ApplicationFiled: September 25, 2009Publication date: November 10, 2011Applicant: Kaneka CorporationInventor: Atsushi Sasayama
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Patent number: 5408559Abstract: In a transmitting and receiving optoelectronic device, a wave-separating filter (16) is disposed at a position deviated from 45.degree. with respect to the optical axis of transmission light (6), or the internal wall surface of a light passage hole (15A) of a support (15) is inclined with respect to the optical axis of the transmission light (5). In another arrangement, a light-transmitting optical unit (1) and a wave-separating optical unit (13) are provided as separate units, and optical-axis adjustment is performed with only the light-transmitting optical unit (1).Type: GrantFiled: November 12, 1993Date of Patent: April 18, 1995Assignee: Hitachi, Ltd.Inventors: Shoichi Takahashi, Masando Tozawa, Atsushi Sasayama, Yoshihiko Kobayashi, Hideo Taguchi
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Patent number: 5344917Abstract: A process for producing regenerated collagen fiber from solubilized collagen including adjusting a degree of swelling of solubilized collagen to 100 to 300% and then treating the resulting solubilized collagen with an aqueous solution of a metallic salt. The regenerated collagen fiber has excellent water resistance and undergoes no waving on contact with water.Type: GrantFiled: December 28, 1992Date of Patent: September 6, 1994Assignee: Kanegafuchi Kagaku Kogyo Kabushiki KaishaInventors: Mitsuru Furukawa, Masahiko Takada, Shoichi Murata, Atsushi Sasayama
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Patent number: 5195155Abstract: An optical coupling apparatus including a light emitting diode, a lens, an optical isolator and an optical fiber disposed on a common optical axis is improved in the optical coupling efficiency. The individual optical elements are roughly adjusted in the respective positions and fixed, and then a precise and fine adjustment is effectuated by plastically deforming a portion of a holder for supporting the lens or the optical isolator and/or by adjusting inclination of the holder. The holder imparted with the fine adjustment capability can be implemented as a lens holder.Type: GrantFiled: May 21, 1990Date of Patent: March 16, 1993Assignee: Hitachi, Ltd.Inventors: Makoto Shimaoka, Tetsuo Kumazawa, Yasutoshi Yagiu, Atsushi Sasayama
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Patent number: 4997243Abstract: In a photoelectric device, particularly, a photoelectric device for optical communication, an optical fiber is fixed at two fixing points so that the extremity of the optical fiber is disposed opposite to the light emitting surface of a laser diode chip and the optical fiber extends in a nonlinear shape, for example, in a moderate curve, between the two fixing points. Even though holding members fixedly holding the optical fiber at the two fixing points and a base member supporting the holding members are formed of a metal or metals having a coefficient of thermal expansion far greater than that of the optical fiber, and even if the distance between the two fixing points is varied due to the thermal expansion or contraction of the holding members and the base member, the optical fiber is obliged only to change the shape of extension.Type: GrantFiled: March 8, 1990Date of Patent: March 5, 1991Assignees: Hitachi, Ltd., Hitachi Tobu Semiconductor, Ltd.Inventors: Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Makoto Haneda, Satoru Ishii, Haruo Kugimiya, Tutomu Kawasaki
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Patent number: 4920262Abstract: In a photoelectric device, particularly, a photoelectric device for optical communication, an optical fiber is fixed at two fixing points so that the extremity of the optical fiber is disposed opposite to the light emitting surface of a laser diode chip and the optical fiber extends in a nonlinear shape, for example, in a moderate curve, between the two fixing points. Even though holding members fixedly holding the optical fiber at the two fixing points and a base member supporting the holding members are formed of a metal or metals having a coefficient of thermal expansion far greater than that of the optical fiber, and even if the distance between the two fixing points is varied due to the thermal expansion or contraction of the holding members and the base member, the optical fiber is obliged only to change the shape of extension.Type: GrantFiled: February 3, 1989Date of Patent: April 24, 1990Assignees: Hitachi, Ltd., Hitachi Tobu SemiconductorInventors: Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Makoto Haneda, Satoru Ishii, Haruo Kugimiya, Tutomu Kawasaki
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Patent number: 4803361Abstract: In a photoelectric device, particularly, a photoelectric device for optical communication, an optical fiber is fixed at two fixing points so that the extremity of the optical fiber is disposed opposite to the light emitting surface of a laser diode chip and the optical fiber extends in a nonlinear shape, for example, in a moderate curve, between the two fixing points. Even though holding members fixedly holding the optical fiber at the two fixing points and a base member supporting the holding members are formed of a metal or metals having a coefficient of thermal expansion far greater than that of the optical fiber, and even if the distance between the two fixing points is varied due to the thermal expansion or contraction of the holding members and the base member, the optical fiber is obliged only to change the shape of extension.Type: GrantFiled: May 26, 1987Date of Patent: February 7, 1989Assignees: Hitachi, Ltd., Hitachi Tobu Semiconductor, Ltd.Inventors: Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Makoto Haneda, Satoru Ishii, Haruo Kugimiya, Tutomu Kawasaki
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Patent number: 4793688Abstract: In the photo electro device, a laser diode chip is set fixedly through a submount to a heatsink in a package. In assembling, first a ball lens is anchored to a holder of a lens support frame by clinching claws of the holder. Subsequently the surfaces of the ball lens on the obverse and reverse sides of the lens support frame are coated with nonreflective films. Then the position of the lens support frame is adjusted relatively to the laser diode chip so that the respective optical axes are aligned with each other. And after an arm is welded fixedly to the heatsink, a frame member is severed or removed to complete the work for setting the ball lens.Type: GrantFiled: May 26, 1987Date of Patent: December 27, 1988Assignees: Hitachi Ltd., Hitachi Tobu Semiconductor, Ltd.Inventors: Kunio Aiki, Atsushi Sasayama, Tugio Nemoto, Tsunetoshi Kawabata, Haruo Kugimiya
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Patent number: 4768070Abstract: An optoelectronics device wherein a light-receiving element which defines a monitor light receiver and a semiconductor laser which generates a laser beam are hermetically sealed in the same package, and wherein the light-receiving surface of the element for measuring the output power of the beam of light emitted from the semiconductor laser is disposed so as to be inclined with respect to the light-emitting surface of the semiconductor laser. The wire bonding surface of the light-receiving element pellet-bonded to a stem and the wire bonding surface of the lead electrically connected to the light-receiving element through a wire are arranged so as to be parallel with each other. Thus, it is possible to support both the bonding surfaces horizontally at the same time. As a result, a bonding tool can be brought into perpendicular contact with each of the bonding surfaces, and this enables appropriate wire bonding to be effected.Type: GrantFiled: February 17, 1987Date of Patent: August 30, 1988Assignees: Hitachi, Ltd, Hitachi Tobu Semiconductor, Ltd.Inventors: Yasushi Takizawa, Atsushi Sasayama, Yoshihiko Kobayashi, Yukio Takahashi, Yuuji Kakegawa
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Patent number: 4756592Abstract: A luminescent device having a luminescent element, an optical fiber for taking up the light emitted from the luminescent element, and a package accommodating the illuminant element and receiving an end portion of the optical fiber. The optical fiber is fixed at a portion near the tip thereof by a first fixing material such that its optical coupling end opposes the light emitting region of the luminescent element, while the remainder part of the portion of the optical fiber in the package is surrounded and held by a second fixing material. By virtue of the second fixing, it is possible to avoid breakage or other defects of the fiber attributable to the difference in the thermal expansion coefficient between the core portion of the optical fiber made of quartz and a jacket of the optical fiber covering the core line portion, thus attaining a higher reliability of the illuminant device.Type: GrantFiled: July 11, 1985Date of Patent: July 12, 1988Assignees: Hitachi, Ltd, Hitachi Eastern SemiconductorInventors: Atsushi Sasayama, Tugio Nemoto, Norihiro Yazaki
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Patent number: 4107727Abstract: A semiconductor device is disclosed wherein a semiconductor pellet is attached on a heat sink of a flange, leads are connected to corresponding electrodes of the semiconductor pellet directly or through wires, the semiconductor pellet and portions of the leads are sealed by resin mold on the flange and top outer periphery of the heat sink is formed with a projection to prevent peel-off of the resin mold and cracking of the resin mold which would otherwise occur due to difference between coefficients of thermal expansion of the flange and the resin mold.Type: GrantFiled: July 26, 1977Date of Patent: August 15, 1978Assignee: Hitachi, Ltd.Inventors: Ryuichi Ikezawa, Atsushi Sasayama, Sakae Kikuchi