Patents by Inventor Hiroshi Hayashi
Hiroshi Hayashi 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: 4951290Abstract: A semiconductor laser device comprising an active layer that constitutes a laser-oscillating resonator, and an inner-striped channel in the resonating direction, light from the active layer being absorbed at both edges of the striped channel, resulting in an optical waveguide within the active layer, wherein the amount of light to be absorbed at both edges of the striped channel in the vicinity of at least one of the light-emitting facets is smaller than that to be absorbed at both edges of the striped channel inside of the light-emitting facets.Type: GrantFiled: July 6, 1988Date of Patent: August 21, 1990Assignee: Sharp Kabushiki KaishaInventors: Taiji Morimoto, Masahiro Yamaguchi, Shinji Kaneiwa, Hiroshi Hayashi, Hidenori Kawanishi
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Patent number: 4948694Abstract: A recording medium comprising a substrate and a transfer recording layer containing a photo-initiator comprising camphorquinone and a coumarin derivative. Such photo-initiator aids in realizing high sensitivity without lowering storage stability of the recording medium. The transfer recording layer causes a change in transfer characteristic when provided with light energy and heat energy, at least one of which is applied imagewise, to provide a transferable portion therein. The transferable portion is then transferred to a transfer-receiving medium such as plain paper to form a transferred image thereon.Type: GrantFiled: September 11, 1989Date of Patent: August 14, 1990Assignee: Canon Kabushiki KaishaInventors: Norio Ohkuma, Masanori Takenouchi, Masashi Miyagawa, Hiroshi Hayashi, Tooru Minami, Hiroharu Oobayashi
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Patent number: 4945026Abstract: An image receiving element for use in a silver salt diffusion transfer process comprising at least an alkali neutralization layer, a neutralization timing layer and an image receiving layer containing silver precipitation nucleus material in regenerated cellulose obtained by saponfying a cellulose ester with a substantially water free alkaline solution after coating disposed on a support in the recited order, wherein the alkaline solution contains from 1 to 20% by weight of a polyhydric alcohol having two or more hydroxyl groups or a derivative thereof. Saponification carried out for forming the image forming layer can be kept from progressing into the layers situated below, thereby enabling the obtainment of satisfactory image receiving sheets with less increase in stains, less density lowering in the storage stability, and less change in the tone.Type: GrantFiled: October 2, 1989Date of Patent: July 31, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideki Tomiyama, Yukio Karino, Hiroshi Hayashi
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Patent number: 4926431Abstract: A semiconductor laser device comprises a substrate and a multi-layered crystal structure with an active layer for laser-oscillating operation, the multi-layered crystal structure being disposed on the substrate and having a striped channel area through which current is supplied to the active layer and a light-absorbing area positioned outside of the channeled area by which a difference between the amount of light to be absorbed inside of the channeled area and the amount of light to be absorbed outside of the channeled area is created, which causes a difference in the effective refractive index of the active layer, resulting in an optical waveguide in the active layer, wherein the active layer is flat and uniform and the width of the portion of the channel area in the vicinity of at least one facet is wider than that of the remaining portion of the channel area.Type: GrantFiled: September 29, 1989Date of Patent: May 15, 1990Assignee: Sharp Kabushiki KaishaInventors: Hidenori Kawanishi, Hiroshi Hayashi, Taiji Morimoto, Shinji Kaneiwa, Masahiro Yamaguchi
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Patent number: 4913019Abstract: In a ham loaf slicing machine having a rotary cutter supported for cyclical orbital movement into and out of a slicing station, a ham loaf size sensing mechanism is provided in a collar having an aperture for supporting a ham loaf in position at the entrance to the slicing station to control the speed of ham loaf feed toward the slicing station. In the inner wall of the collar which defines the aperture, an annular groove and a draw-out passage for a flexible strap-like member which leads to a location outside the collar are provided. The strap-like member is disposed in the annular groove, one end of the member being fixed at a suitable location in the groove. The other end of the strap-like member is positioned outside the collar past the draw-out passage and is connected to a sensor.Type: GrantFiled: July 19, 1989Date of Patent: April 3, 1990Assignee: Ryowa Ltd.Inventor: Hiroshi Hayashi
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Patent number: 4911512Abstract: A waveguide type optical head comprises a thin film waveguide of semiconductor or dielectric substance formed on a semiconductor or dielectric substrate, an optical element with an optical signal processing function provided on the thin film waveguide, and a semiconductor laser fixed on the substrate for emitting laser beam into the waveguide, and is characterized in that part of the laser beam emitted from the semiconductor laser is reflected by the incident end surface of the thin film waveguide and returned to the semiconductor laser.Type: GrantFiled: November 5, 1987Date of Patent: March 27, 1990Assignee: Sharp Kabushiki KaishaInventors: Osamu Yamamoto, Hiroshi Hayashi, Nobuyuki Miyauchi, Shigeki Maei, Hidenori Kawanishi
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Patent number: 4880096Abstract: A bill validator including a vertically extending main body having a bill insertion slit, bill conveying passage, and a bill discrimination device provided along the bill conveying passage, and a bill accumulating box detachably mounted on the main body. The main body can be turned upside down, along with the bill insertion slit, bill conveying passage and bill discrimination device configured therein. The bill accumulating box is selectably mounted on the main body in a normal state or in an upside down state such that the vertical position of the bill accumulating box will not be changed when the main body is turned upside down. Thus, the same bill validator may be used as a type with the bill insertion slit provided at the upper portion or at the lower portion thereof, respectively, as desired for use with different vending machine configurations.Type: GrantFiled: March 16, 1987Date of Patent: November 14, 1989Assignee: Kabushiki Kaisha Nippon CoincoInventors: Osamu Kobayashi, Hiroshi Hayashi, Ryoji Yamagishi
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Patent number: 4880915Abstract: An aqueous solution containing a physiologically active substance, which is produced by recombinant DNA technique and which has cytotoxic activity against L-M cells and is capable of inducing hemorrhagic necrosis of transplanted Meth A sarcoma in the BALB/c mouse, can be effectively, efficiently purified by column chromatography using a column packed with a dye-bonded crosslinked agarose gel.Type: GrantFiled: November 19, 1985Date of Patent: November 14, 1989Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Junichi Kajihara, Takao Kiyota, Hiroshi Hayashi
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Patent number: 4879725Abstract: A semiconductor laser device comprises a p-type semiconductor substrate and a multi-layered crystal structure with an active layer for laser-oscillating operation, the multi-layered crystal structure being disposed on the substrate and having a striped channel area through which current is supplied to the active layer and a light-absorbing area positioned outside of the channeled area by which a difference between the amount of light to be absorbed inside of the channeled area and the amount of light to be absorbed outside of the channeled area is created, which causes a difference in the effective refractive index of the active layer, resulting in an optical waveguide in the active layer, wherein the light-absorbing area is constituted by an n-type semiconductor substance, but a portion of the n-type semiconductor substance positioned in the vicinity of at least one of both facets is replaced by a p-type semiconductor substance.Type: GrantFiled: August 30, 1988Date of Patent: November 7, 1989Assignee: Sharp Kabushiki KaishaInventors: Hidenori Kawanishi, Masahiro Yamaguchi, Hiroshi Hayashi, Taiji Morimoto, Shinji Kaneiwa
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Patent number: 4864585Abstract: An external cavity type semiconductor laser apparatus comprising a semiconductor laser device and an external reflector, which are mounted on a single mounting base with a distance therebetween, wherein laser light from the light-emitting rear facet of the laser device is reflected by the reflector and returns to the laser device, the coefficient of linear expansion of the mounting base being smaller than that of Cu and being greater than those of both the laser device and the reflector.Type: GrantFiled: March 18, 1988Date of Patent: September 5, 1989Assignee: Sharp Kabushiki KaishaInventors: Hiroshi Hayashi, Shigeki Maei, Osamu Yamamoto, Hidenori Kawanishi, Nobuyuki Miyauchi
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Patent number: 4860305Abstract: An external cavity type semiconductor laser apparatus comprising a semiconductor laser device and an external cavity, which are mounted on a single mounting base with a space therebetween, wherein laser light emitted from the light-emitting rear facet of the laser device is reflected by the external cavity and returns to the laser device. The reflectivity of the light-emitting rear facet of the laser device being different from that of the light-emitting front facet of the laser device.Type: GrantFiled: February 26, 1988Date of Patent: August 22, 1989Assignee: Sharp Kabushiki KaishaInventors: Nobuyuki Miyauchi, Hidenori Kawanishi, Shigeki Maei, Osamu Yamamoto, Hiroshi Hayashi
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Patent number: 4849319Abstract: A negative silver halide photographic material comprising a support and at least one silver halide emulsion layer on the support, the emulsion layer or other hydrophilic colloid layer containing a hydrazine derivative, wherein the photographic material further contains an acid polymer and in which the pH of the surface of the photographic material is not more than 5.8. Also, a method for forming a superhigh contrast negative image using the above photographic material is disclosed.Type: GrantFiled: November 20, 1987Date of Patent: July 18, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuaki Inoue, Senzo Sasaoka, Hiroshi Hayashi
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Patent number: 4842957Abstract: A pressure sensor element is disclosed which essentially comprises a high-strength electric insulating ceramic substrate and a silver coating tightly deposited on the surface of the substrate. When a region of the element is subjected to a high pressure, the electric resistance in the region concerned changes in proportion to the magnitude of the pressure.Type: GrantFiled: October 29, 1987Date of Patent: June 27, 1989Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Tetsuo Yamamoto, Hiroshi Hayashi, Tenshiro Muta, Yoshisada Hori, Katsushi Kubo
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Patent number: 4830825Abstract: Disclosed is a corrosion-resistant copper alloy having a composition consisting essentially, by weight, of 5 to 9% of Al, 0.5 to 4% of Ni, 0.5 to 4% of Fe, 0.1 to 3% of Mn, 0.001 to 1% of Ti, at least one selected from 0.001 to 1% of Co and 0.001 to 0.1% of B, and the balance Cu and unavoidable impurities, and a substantially single-phase structure consisting essentially of .alpha.-phase. This alloy has excellent weather resistance whereby its beautiful color tone close to gold is able to last for a long time, and further has superior corrosion resistance, particularly, high resistance to corrosion by seawater, together with high strength and excellent cold formability.Type: GrantFiled: September 25, 1987Date of Patent: May 16, 1989Assignees: Mitsubishi Kinzoku Kabushiki Kaisha, Kusakabe Copastar Company, Sachio GotoInventors: Sachio Goto, Hideo Kobayashi, Akira Yasumori, Tsutomu Kimura, Hiroshi Hayashi
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Patent number: 4829531Abstract: The external resonator type semiconductor laser of the present invention includes a semiconductor laser element, a reflection member having a reflecting mirror surface for feeding back to the laser element a laser beam emitted from an emitting end surface of the semiconductor laser element, and a mount member for fixedly mounting the laser element and reflection member thereon. The coefficient of linear expansion of the mount member is adapted to be smaller than the coefficient of linear expansion of the semiconductor laser element and reflection member so that the distance between the emitting surface and the reflecting surface (i.e. the external resonator length) decreases with a rise in temperature.Type: GrantFiled: August 7, 1987Date of Patent: May 9, 1989Assignee: Sharp Kabushiki KaishaInventors: Hidenori Kawanishi, Osamu Yamamoto, Nobuyuki Miyauchi, Shigeki Maei, Hiroshi Hayashi
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Patent number: 4819245Abstract: A semiconductor laser device comprises a substrate having a main striped channel for confining current therein and sub-striped channels formed in a parallel manner outside of the main striped channel. The width of the sub-striped channels is greater than that of the main striped channel. An active layer is provided for laser oscillation. The portion of the active layer corresponding to the sub-striped channels are formed into a concave portion. The portion of the active layer positioned between the concaved portions of the active layer results in a plane with a limited thickness.Type: GrantFiled: April 22, 1986Date of Patent: April 4, 1989Assignee: Sharp Kabushiki KaishaInventors: Taiji Morimoto, Mototaka Taneya, Hiroshi Hayashi, Saburo Yamamoto
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Patent number: 4819244Abstract: A V-channel inner stripe semiconductor laser device comprising a multi-layered growth crystal having an active layer for laser oscillation but no substrate, with a buffer layer formed on the multi-layered growth crystal thicker than all of the layers of the growth crystal, where the multi-layered growth crystal and buffer layer are sandwiched between an n-sided electrode and a p-sided electrode, wherein a pair of mesa-striped channels are formed outside of the V-channel to remove the outside of the optical waveguide formed in the active layer corresponding to the V-channel.Type: GrantFiled: June 4, 1986Date of Patent: April 4, 1989Assignee: Sharp Kabushiki KaishaInventors: Saburo Yamamoto, Hiroshi Hayashi, Taiji Morimoto
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Patent number: 4817109Abstract: An external resonator type semiconductor laser apparatus comprising a semiconductor laser device, a reflector positioned behind said laser device in a manner to face the light-emitting rear facet of said laser device, and a photodetector, for detecting the optical output of said laser device, positioned backward of said reflector, wherein a part of the laser light from said light-emitting rear facet is reflected by said reflector and the reflected light is then incident to said photodetector.Type: GrantFiled: December 4, 1986Date of Patent: March 28, 1989Assignee: 501 Sharp Kabushiki KaishaInventors: Nobuybuki Miyauchi, Osamu Yamamoto, Hiroshi Hayashi, Saburo Yamamoto, Shigeki Maei
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Patent number: 4815089Abstract: A semiconductor laser includes a front mirror facet and a rear mirror facet. An Al.sub.2 O.sub.3 film coating is formed on the front mirror facet by electron beam evaporation so that the front mirror facet has a reflectance between 10 and 20%. A multi-layered coating is formed on the rear mirror facet so that the rear mirror facet has a reflectance higher than 90%.Type: GrantFiled: May 9, 1985Date of Patent: March 21, 1989Assignee: Sharp Kabushiki KaishaInventors: Nobuyuki Miyauchi, Shigeki Maei, Osamu Yamamoto, Taiji Morimoto, Hiroshi Hayashi, Saburo Yamamoto
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Patent number: RE33306Abstract: A secondary battery or cell with improved rechargeability is obtained by combination of (A) a cathode active material comprising a chalcogen compound of a transition metal, (B) an electrolyte comprising an organic solvent having dissolved therein a lithium salt and (C) an anode active material comprising lithium metal in electrical contact with an electrically conductive carbonaceous material which is a pyrolysis residue of an organic material such as synthetic high polymers. The anode active material can be formed in situ within the battery, by self discharge of lithium metal into the carbonaceous material. The battery or cell is of excellent properties, such as stability or flatness of discharge voltage and electric capacity.Type: GrantFiled: October 7, 1988Date of Patent: August 21, 1990Assignee: Sanyo Chemical Industries, Ltd.Inventors: Hiroshi Hayashi, Masahiro Satoh