Patents by Inventor Masahiro Yanagisawa
Masahiro Yanagisawa 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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Publication number: 20160230285Abstract: A plating apparatus (1) includes: a holding member (2) that holds a plated object (W); a spacer (4) that is stacked on the holding member (2) via a first seal member (3) in an annular shape surrounding the plated object (W), and has a through portion (45) from which the plated object (W) is exposed and which stores a plating solution; and an anode member (6) that is stacked on the spacer (4) via a second seal member (3) in an annular shape surrounding the through portion (45), and has an anode layer (62) arranged to face the plated object (W) which is exposed from the through portion (45).Type: ApplicationFiled: July 31, 2014Publication date: August 11, 2016Applicants: WASEDA University, YAMAMOTO-MS CO., LTD.Inventors: Wataru Yamamoto, Kimiko Koiwa, Takayuki HOMMA, Masahiro YANAGISAWA, Mikiko Saito, Tomoyuki YAMAMOTO
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Publication number: 20150205043Abstract: In a waveguide device, unnecessary optical power is appropriately terminated. According to an embodiment of the present invention, the waveguide device has a termination structure filled with a light blocking material to terminate light from a waveguide end. In the termination structure, a cladding and a core are removed to form a groove on an optical waveguide. The groove is filled with a material (light blocking material) that attenuates the intensity of light. Thus, light input to the termination structure is attenuated by the light blocking material, suppressing crosstalk which possibly effects on other optical devices. Thus, such a termination structure can restrain crosstalk occurred in optical devices integrated in the same substrate and can also suppress crosstalk which possibly effects on any other optical device connected directly to the substrate.Type: ApplicationFiled: March 26, 2015Publication date: July 23, 2015Inventors: Takanori Ishikawa, Tomoyo Shibazkai, Mitsuru Nagano, Masahiro Yanagisawa, Hiroshi Terui, Mikitaka Itoh
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Patent number: 9020307Abstract: In a waveguide device, unnecessary optical power is appropriately terminated. According to an embodiment of the present invention, the waveguide device has a termination structure filled with a light blocking material to terminate light from a waveguide end. In the termination structure, a cladding and a core are removed to form a groove on an optical waveguide. The groove is filled with a material (light blocking material) that attenuates the intensity of light. Thus, light input to the termination structure is attenuated by the light blocking material, suppressing crosstalk which possibly effects on other optical devices. Thus, such a termination structure can restrain crosstalk occurred in optical devices integrated in the same substrate and can also suppress crosstalk which possibly effects on any other optical device connected directly to the substrate.Type: GrantFiled: November 26, 2010Date of Patent: April 28, 2015Assignees: NTT Electronics Corporation, Nippon Telegraph and Telephone CorporationInventors: Takanori Ishikawa, Tomoyo Shibazaki, Mitsuru Nagano, Masahiro Yanagisawa, Hiroshi Terui, Mikitaka Itoh
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Publication number: 20150069306Abstract: Provided is a dispersant used for dispersion of metal particles, the dispersant including: a constituent unit derived from a compound represented by General Formula (I) below; and a constituent unit derived from a compound having an ionic group, where in General Formula (I) above, R1 is a hydrogen atom or a methyl group, x is a natural number of 2 or greater, and n is a natural number of 1 or greater.Type: ApplicationFiled: August 13, 2014Publication date: March 12, 2015Inventor: Masahiro YANAGISAWA
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Patent number: 8900524Abstract: There is provided a novel optical sensor utilizing a surface plasmon resonance technique which is capable of detecting a substance to be detected with high sensitivity independently of a wavelength of irradiated light and is capable of obtaining information, other than a refraction index, on the substance to be detected. At the center of a surface of a metallic film 2 which is formed on a substrate and has no aperture, a circular depression 4 with a diameter of 0.1 to 250 nm is formed and with the depression 4 defined as a center, a plurality of depressions 3 are concentrically formed at intervals of 450 to 530 nm.Type: GrantFiled: March 17, 2009Date of Patent: December 2, 2014Assignee: Waseda UniversityInventors: Masahiro Yanagisawa, Takuya Nakanishi, Naonobu Shimamoto, Mikiko Saito, Tetsuya Osaka
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Publication number: 20140272177Abstract: Disclosed is a dispersing agent to be used for dispersing metal particles, comprising a structural unit originating from a compound represented by a general formula of wherein R1 is a hydrogen atom or a methyl group, R2 is a hydrogen atom, an alkyl group with a carbon number equal to or greater than 1 and equal to or less than 9, a phenyl group, a bicyclopentenyl group, or a nonylphenyl group, x is 2 or 3, and n is equal to or greater than 1, and a structural unit that has an ionic group, wherein a number average molecular weight of the compound represented by general formula (I) is equal to or less than 10000.Type: ApplicationFiled: February 6, 2014Publication date: September 18, 2014Applicant: RICOH COMPANY, LTD.Inventor: Masahiro Yanagisawa
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Patent number: 8736941Abstract: An electrochromic display apparatus is disclosed that includes a stacked body which includes a display electrode and an electrochromic layer that are stacked on each other; a film which includes through holes, and is disposed on one of the display electrode and the electrochromic layer of the stacked body; and an opposed substrate on which an opposed electrode that faces toward the display electrode is formed.Type: GrantFiled: March 11, 2011Date of Patent: May 27, 2014Assignee: Ricoh Company, Ltd.Inventors: Yoshihisa Naijo, Tohru Yashiro, Shigenobu Hirano, Masahiro Yanagisawa, Masahiro Masuzawa, Akishige Murakami, Hiroyuki Takahashi, Koh Fujimura, Yoshinori Okada
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Patent number: 8728620Abstract: An object of the present invention is to provide white colored fine particles with high white reflectance and not easily precipitating in a dispersion medium compared to inorganic white pigments, a method of producing the fine particles, an image display medium and an image display apparatus having a high whiteness like a paper and an excellent display memorability using the fine particles. Therefore, the fine particles contain a polymer of a compound expressed by the following formula (1): wherein, R represents a hydrogen atom, a halogen atom, an alkyl group or an alkenyl group, “m” represents an integer of 1 to 10, and at least one of R represents the alkenyl group.Type: GrantFiled: June 23, 2011Date of Patent: May 20, 2014Assignee: Ricoh Company, Ltd.Inventors: Masahiro Yanagisawa, Seigou Kawaguchi
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Patent number: 8625943Abstract: Excess optical power in a waveguide device is appropriately terminated. According to one embodiment of the present invention, the waveguide device comprises a termination structure filled with a light blocking material for terminating light from the end section of a waveguide. This termination structure can be formed by forming a groove on an optical waveguide by removing the clad and core, and filling the inside of that groove with a material attenuating the intensity of the light (light blocking material). In this manner, light that enters into the termination structure is attenuated by the light blocking material, and influence on other optical devices as a crosstalk component can be suppressed. With such termination structure, not only the influence on optical devices integrated on the same substrate, but also the influence on other optical devices directly connected to that substrate can be suppressed.Type: GrantFiled: May 26, 2009Date of Patent: January 7, 2014Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics CorporationInventors: Shunichi Soma, Takashi Goh, Yasuaki Hashizume, Masahiro Yanagisawa, Takanori Ishikawa, Mitsuru Nagano, Atsushi Murasawa, Masayuki Okuno
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Patent number: 8554040Abstract: A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.Type: GrantFiled: July 25, 2012Date of Patent: October 8, 2013Assignee: Nippon Telegraph and Telephone CorporationInventors: Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa, Senichi Suzuki, Yasuhiro Hida, Motohaya Ishii, Munehisa Tamura
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Patent number: 8538222Abstract: A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.Type: GrantFiled: July 25, 2012Date of Patent: September 17, 2013Assignee: Nippon Telegraph and Telephone CorporationInventors: Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa, Senichi Suzuki, Yasuhiro Hida, Motohaya Ishii, Munehisa Tamura
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Patent number: 8463097Abstract: A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.Type: GrantFiled: July 12, 2010Date of Patent: June 11, 2013Assignee: Nippon Telegraph and Telephone CorporationInventors: Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa, Senichi Suzuki, Yasuhiro Hida, Motohaya Ishii, Munehisa Tamura
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Patent number: 8441713Abstract: An electrophoretic liquid is disclosed that includes first particles that have the property of scattering light over an entire visible range and are positively or negatively charged; second particles that have the property of absorbing light of a specific wavelength range in the visible range and scattering light of ranges other than the specific wavelength range and are charged to a polarity opposite to that of the first particles; and a dispersion medium that has the property of allowing the light of the specific wavelength range absorbed by the second particles to pass through and absorbing the light of the ranges other than the specific wavelength range. In the electrophoretic liquid, the first particles and the second particles are dispersed in the dispersion medium.Type: GrantFiled: August 4, 2009Date of Patent: May 14, 2013Assignee: Ricoh Company, Ltd.Inventors: Ikue Kawashima, Masahiro Masuzawa, Masahiro Yanagisawa, Yoshihisa Naijo
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Patent number: 8384983Abstract: An electrochromic display device includes a display substrate, a counter substrate facing the display substrate, counter electrodes formed on the counter substrate, at least first and second display electrodes arranged between the display substrate and the counter electrodes, the first display electrode and the second display electrode having a predetermined distance from each other, a first electrochromic layer arranged on the first display electrode and a second electrochromic layer arranged on the second display electrode, an electrolyte layer arranged between the respective first and the second display electrodes and the counter electrodes, and a protective layer made of an insulator material formed on a counter electrode facing side surface of one of the first and the second display electrodes such that the protective layer is sandwiched between the selected one of the first and the second display electrodes and a corresponding one of the first and the second electrochromic layers.Type: GrantFiled: August 1, 2011Date of Patent: February 26, 2013Assignee: Ricoh Company, Ltd.Inventors: Tohru Yashiro, Shigenobu Hirano, Yoshihisa Naijo, Koh Fujimura, Masahiro Yanagisawa, Masahiro Masuzawa, Hitoshi Arita
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Publication number: 20120311516Abstract: A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.Type: ApplicationFiled: July 25, 2012Publication date: December 6, 2012Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa, Senichi Suzuki, Yasuhiro Hida, Motohaya Ishii, Munehisa Tamura
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Publication number: 20120304143Abstract: A planar lightwave circuit is provided which can be easily fabricated by an existing planar-lightwave-circuit fabrication process, which can lower the propagation loss of signal light and which can convert inputted signal light so as to derive desired signal light. A planar lightwave circuit having a core and a clad which are formed on a substrate, has input optical waveguide(s) (111) which inputs signal light, mode coupling part (112) for coupling a fundamental mode of the inputted signal light to a higher-order mode and/or a radiation mode, or mode re-coupling part (113) for re-coupling the higher-order mode and/or the radiation mode to the fundamental mode, and output optical waveguide(s) (114) which outputs signal light. The mode coupling part or the mode re-coupling part is an optical waveguide which has core width and/or height varied continuously.Type: ApplicationFiled: July 25, 2012Publication date: November 29, 2012Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takashi Saida, Yohei Sakamaki, Toshikazu Hashimoto, Tsutomu Kitoh, Hiroshi Takahashi, Masahiro Yanagisawa, Senichi Suzuki, Yasuhiro Hida, Motohaya Ishii, Munehisa Tamura
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Publication number: 20120251041Abstract: In a waveguide device, unnecessary optical power is appropriately terminated. According to an embodiment of the present invention, the waveguide device has a termination structure filled with a light blocking material to terminate light from a waveguide end. In the termination structure, a cladding and a core are removed to form a groove on an optical waveguide. The groove is filled with a material (light blocking material) that attenuates the intensity of light. Thus, light input to the termination structure is attenuated by the light blocking material, suppressing crosstalk which possibly effects on other optical devices. Thus, such a termination structure can restrain crosstalk occurred in optical devices integrated in the same substrate and can also suppress crosstalk which possibly effects on any other optical device connected directly to the substrate.Type: ApplicationFiled: November 26, 2010Publication date: October 4, 2012Applicants: NIPPON TELEGRAPH AND TELEPHONE CORPORATION, NTT ELECTRONICS CORPORATIONInventors: Takanori Ishikawa, Tomoyo Shibazaki, Mitsuru Nagano, Masahiro Yanagisawa, Hiroshi Terui, Mikitaka Itoh
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Patent number: 8144117Abstract: When not receiving the next display-switch starting signal even after a specified time elapses from the application of a previous display driving voltage, a driving unit applies another preparatory driving voltage for generating a preparatory electric field capable of improving the response of colored particles to a driving electric field to an extent so as not to change the arrangement of the colored particles between pixel electrodes and a transparent electrode for a preparatory driving time.Type: GrantFiled: October 28, 2008Date of Patent: March 27, 2012Assignee: Ricoh Company, Ltd.Inventors: Atsushi Okada, Masahiro Yanagisawa, Yoshihisa Naijo
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Publication number: 20120033286Abstract: An electrochromic display device includes a display substrate, a counter substrate facing the display substrate, counter electrodes formed on the counter substrate, at least first and second display electrodes arranged between the display substrate and the counter electrodes, the first display electrode and the second display electrode having a predetermined distance from each other, a first electrochromic layer arranged on the first display electrode and a second electrochromic layer arranged on the second display electrode, an electrolyte layer arranged between the respective first and the second display electrodes and the counter electrodes, and a protective layer made of an insulator material formed on a counter electrode facing side surface of one of the first and the second display electrodes such that the protective layer is sandwiched between the selected one of the first and the second display electrodes and a corresponding one of the first and the second electrochromic layers.Type: ApplicationFiled: August 1, 2011Publication date: February 9, 2012Applicant: RICOH COMPANY, LTD.Inventors: Tohru YASHIRO, Shigenobu Hirano, Yoshihisa Naijo, Koh Fujimura, Masahiro Yanagisawa, Masahiro Masuzawa, Hitoshi Arita
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Publication number: 20110257354Abstract: An object of the present invention is to provide white colored fine particles with high white reflectance and not easily precipitating in a dispersion medium compared to inorganic white pigments, a method of producing the fine particles, an image display medium and an image display apparatus having a high whiteness like a paper and an excellent display memorability using the fine particles. Therefore, the fine particles contain a polymer of a compound expressed by the following formula (1). In the above formula (1), R represents a hydrogen atom, a halogen atom, an alkyl group or an alkenyl group, “m” represents an integer of 1 to 10, and at least one of R represents the alkenyl group.Type: ApplicationFiled: June 23, 2011Publication date: October 20, 2011Inventors: Masahiro YANAGISAWA, Seigou Kawaguchi