Patents by Inventor Shigefumi Sakai
Shigefumi Sakai 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: 11480855Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.Type: GrantFiled: March 29, 2021Date of Patent: October 25, 2022Assignee: DUALITAS LTDInventor: Shigefumi Sakai
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Publication number: 20210232028Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.Type: ApplicationFiled: March 29, 2021Publication date: July 29, 2021Inventor: Shigefumi Sakai
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Patent number: 10983423Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.Type: GrantFiled: May 15, 2019Date of Patent: April 20, 2021Assignee: Dualitas LtdInventor: Shigefumi Sakai
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Patent number: 10852627Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.Type: GrantFiled: May 15, 2019Date of Patent: December 1, 2020Assignee: ALPS ALPINE CO., LTD.Inventor: Shigefumi Sakai
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Publication number: 20190265582Abstract: An image display device includes a display unit which displays a first image and a second image, and a projection optical system which directs light of the first image and light of the second image toward a windshield. The display unit displays the first image and the second image in different display areas on the same plane. The projection optical system sets an image point of the light of the first image and an image point of the light of the second image, so that a first virtual image and a second virtual image are formed at positions having different distances from a viewing point within a visible area.Type: ApplicationFiled: May 15, 2019Publication date: August 29, 2019Inventor: Shigefumi SAKAI
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Patent number: 8017046Abstract: A skin cosmetic composition comprising: a hydrogel particle comprising a non-crosslinked hydrogel containing an oil component therein dispersed in an aqueous medium; a hydrogel particle comprising a non-crosslinked hydrogel containing an oil component therein; and a process for preparing a hydrogel particle comprising the steps of discharging an oil component-emulsified or dispersed solution prepared by dissolving a non-crosslinked hydrogel in an aqueous solution, with vibration from an orifice to form droplets; and cooling the droplets to solidify.Type: GrantFiled: February 20, 2009Date of Patent: September 13, 2011Assignee: Kao CorporationInventors: Shigefumi Sakai, Atsuyuki Kiba, Chitoshi Shigeno, Hideaki Kubo
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Publication number: 20090155323Abstract: A skin cosmetic composition comprising: a hydrogel particle comprising a non-crosslinked hydrogel containing an oil component therein dispersed in an aqueous medium; a hydrogel particle comprising a non-crosslinked hydrogel containing an oil component therein; and a process for preparing a hydrogel particle comprising the steps of discharging an oil component-emulsified or dispersed solution prepared by dissolving a non-crosslinked hydrogel in an aqueous solution, with vibration from an orifice to form droplets; and cooling the droplets to solidify.Type: ApplicationFiled: February 20, 2009Publication date: June 18, 2009Applicant: Kao CorporationInventors: Shigefumi SAKAI, Atsuyuki Kiba, Chitoshi Shigeno, Hideaki Kubo
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Patent number: 7319581Abstract: A capacitive pressure sensor includes: a conductive silicon substrate having a diaphragm; an insulating substrate having a fixed electrode, the insulating substrate overlapping the conductive silicon substrate so as to be bonded thereto; and a sealed chamber formed between the diaphragm and the fixed electrode. A conductive silicon member is buried in a part of the insulating substrate, a portion of the conductive silicon member is exposed toward a surface of the insulating substrate facing the sealed chamber so as to form the fixed electrode, and another portion of the conductive silicon member is exposed toward the other surface of the insulating substrate not facing the sealed chamber so as to form a lead electrode of the fixed electrode.Type: GrantFiled: December 2, 2005Date of Patent: January 15, 2008Assignee: ALPS Electric Co., Ltd.Inventors: Toshihide Suto, Shigefumi Sakai, Sasahiro Takahashi
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Patent number: 7135749Abstract: A pressure sensor includes a silicon-on-insulator (SOI) substrate, a glass substrate bonded to the SOI substrate by anode bonding, a silicon island formed on a part of a silicon layer of the SOI substrate and surrounded by a groove extending to an insulating layer of the SOI substrate, a through hole formed in the glass substrate, and an output electrode that is made of a conductive material, is disposed inside the through hole, and is electrically connected to an electrode formed on the glass substrate via the silicon island.Type: GrantFiled: January 3, 2005Date of Patent: November 14, 2006Assignee: Alps Electric Co., Ltd.Inventors: Shigefumi Sakai, Munemitsu Abe
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Publication number: 20060133006Abstract: A capacitive pressure sensor includes: a conductive silicon substrate having a diaphragm; an insulating substrate having a fixed electrode, the insulating substrate overlapping the conductive silicon substrate so as to be bonded thereto; and a sealed chamber formed between the diaphragm and the fixed electrode. A conductive silicon member is buried in a part of the insulating substrate, a portion of the conductive silicon member is exposed toward a surface of the insulating substrate facing the sealed chamber so as to form the fixed electrode, and another portion of the conductive silicon member is exposed toward the other surface of the insulating substrate not facing the sealed chamber so as to form a lead electrode of the fixed electrode.Type: ApplicationFiled: December 2, 2005Publication date: June 22, 2006Inventors: Toshihide Suto, Shigefumi Sakai, Sasahiro Takahashi
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Publication number: 20050156241Abstract: A pressure sensor includes a silicon-on-insulator (SOI) substrate, a glass substrate bonded to the SOI substrate by anode bonding, a silicon island formed on a part of a silicon layer of the SOI substrate and surrounded by a groove extending to an insulating layer of the SOI substrate, a through hole formed in the glass substrate, and an output electrode that is made of a conductive material, is disposed inside the through hole, and is electrically connected to an electrode formed on the glass substrate via the silicon island.Type: ApplicationFiled: January 3, 2005Publication date: July 21, 2005Inventors: Shigefumi Sakai, Munemitsu Abe
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Publication number: 20040207921Abstract: A multilayer film optical filter includes a multilayer film including a plurality of dielectric material thin films repeatedly laminated on a substrate and having different refractive indexes. The multilayer film optical filter further includes a relaxation layer composed of a single material, having a thickness in the range of 1 to 10 &mgr;m, and provided below the multilayer film near the substrate, for relaxing the influence of an error in thickness measurement due to a temperature rise of the substrate in an initial stage of deposition.Type: ApplicationFiled: May 12, 2004Publication date: October 21, 2004Applicant: ALPS Electric Co., Ltd.Inventors: Hitoshi Kitagawa, Takashi Hatanai, Yuichi Umeda, Shigefumi Sakai
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Patent number: 6635589Abstract: Silicon oxide films which are good as gate insulation films are formed by subjecting a silicon oxide film which has been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700° C. in a dinitrogen monoxide atmosphere, or in an NH3 or N2H4 atmosphere, while irradiating with ultraviolet light, reducing the hydrogen and carbon contents in the silicon oxide film and introducing nitrogen into the boundary with the silicon film in particular. Furthermore, silicon oxide films which are good as gate insulating films have been formed by subjecting silicon oxide films which have been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700° C. in an N2O atmosphere (or hydrogen nitride atmosphere) while irradiating with ultraviolet light, and then carrying out a heat treatment at 300-700° C.Type: GrantFiled: April 7, 1999Date of Patent: October 21, 2003Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yasuhiko Takemura, Mitsunori Sakama, Tomohiko Sato, Satoshi Teramoto, Shigefumi Sakai
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Publication number: 20030142407Abstract: A multilayer film optical filter includes a multilayer film including a plurality of dielectric material thin films repeatedly laminated on a substrate and having different refractive indexes. The multilayer film optical filter further includes a relaxation layer composed of a single material, having a thickness in the range of 1 to 10 &mgr;m, and provided below the multilayer film near the substrate, for relaxing the influence of an error in thickness measurement due to a temperature rise of the substrate in an initial stage of deposition.Type: ApplicationFiled: January 17, 2003Publication date: July 31, 2003Applicant: ALPS ELECTRIC CO., LTD.Inventors: Hitoshi Kitagawa, Takashi Hatanai, Yuichi Umeda, Shigefumi Sakai
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Publication number: 20020160622Abstract: Silicon oxide films which are good as gate insulation films are formed by subjecting a silicon oxide film which has been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700° C. in a dinitrogen monoxide atmosphere, or in an NH3 or N2H4 atmosphere, while irradiating with ultraviolet light, reducing the hydrogen and carbon contents in the silicon oxide film and introducing nitrogen into the boundary with the silicon film in particular. Furthermore, silicon oxide films which are good as gate insulating films have been formed by subjecting silicon oxide films which have been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700° C. in an N2O atmosphere (or hydrogen nitride atmosphere) while irradiating with ultraviolet light, and then carrying out a heat treatment at 300-700° C.Type: ApplicationFiled: April 7, 1999Publication date: October 31, 2002Inventors: SHUNPEI YAMAZAKI, YASUHIKO TAKEMURA, MITSUNORI SAKAMA, TOMOHIKO SATO, SATOSHI TERAMOTO, SHIGEFUMI SAKAI
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Publication number: 20020034525Abstract: A skin cosmetic composition comprising: a hydrogel particle comprising a non-crosslinked hydrogel containing an oil component therein dispersed in an aqueous medium; a hydrogel particle comprising a non-crosslinked hydrogel containing an oil component therein; and a process for preparing a hydrogel particle comprising the steps of discharging an oil component-emulsified or dispersed solution prepared by dissolving a non-crosslinked hydrogel in an aqueous solution, with vibration from an orifice to form droplets; and cooling the droplets to solidify.Type: ApplicationFiled: June 28, 2001Publication date: March 21, 2002Applicant: Kao CorporationInventors: Shigefumi Sakai, Atsuyuki Kiba, Chitoshi Shigeno, Hideaki Kubo
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Patent number: 5970384Abstract: Silicon oxide films which are good as gate insulation films are formed by subjecting a silicon oxide film which has been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700.degree. C. in a dinitrogen monoxide atmosphere, or in an NH.sub.3 or N.sub.2 H.sub.4 atmosphere, while irradiating with ultraviolet light, reducing the hydrogen and carbon contents in the silicon oxide film and introducing nitrogen into the boundary with the silicon film in particular. Furthermore, silicon oxide films which are good as gate insulating films have been formed by subjecting silicon oxide films which have been formed on an active layer comprising a silicon film by means of a PVD method or CVD method to a heat treatment at 300-700.degree. C. in an N.sub.2 O atmosphere (or hydrogen nitride atmosphere) while irradiating with ultraviolet light, and then carrying out a heat treatment at 300-700.degree. C. in a hydrogen nitride atmosphere (N.sub.Type: GrantFiled: August 2, 1995Date of Patent: October 19, 1999Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Yasuhiko Takemura, Mitsunori Sakama, Tomohiko Sato, Satoshi Teramoto, Shigefumi Sakai