Patents by Inventor Hiroshi Kamikawa
Hiroshi Kamikawa 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: 11977182Abstract: According to one embodiment, an optical imaging apparatus includes a polarizer assembly, a polarization image sensor, and a lens assembly. The polarizer assembly is configured to acquire a first light ray of a first polarization component and a second light ray of a second polarization component which is different from the first polarization component, by using a light flux from an identical direction. The polarization image sensor is located in a position facing the polarizer assembly. The polarization image sensor is configured to acquire an image of the first polarization component and an image of the second polarization component at once or at the same time. The lens assembly includes a first lens configured to form the images on the polarization image sensor.Type: GrantFiled: February 28, 2020Date of Patent: May 7, 2024Assignee: Kabushiki Kaisha ToshibaInventors: Hiroshi Ohno, Hiroya Kano, Hideaki Okano, Takahiro Kamikawa
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Publication number: 20240101532Abstract: A compound useful as an active ingredient of a pharmaceutical composition for treatment of cancer related to activation of immune cells or cancer resistant to anti-PD-1 antibody/anti-PD-L1 antibody therapy is provided. The present inventors have conducted studies on a compound useful as an active ingredient of a pharmaceutical composition for treatment of cancer related to activation of immune cells or cancer resistant to anti-PD-1 antibody/anti-PD-L1 antibody therapy, and confirmed that a heteroaryl carboxamide compound has DGK ? (DGKzeta) inhibitory effect, leading to completion of the present invention. The heteroaryl carboxamide compound of the present invention has DGK ? inhibitory effect, and can be used as a therapeutic agent for treatment of cancer related to activation of immune cells or cancer resistant to anti-PD-1 antibody/anti-PD-L1 antibody therapy.Type: ApplicationFiled: November 28, 2023Publication date: March 28, 2024Inventors: Hideyuki Watanabe, Takashi Kamikubo, Akio Kamikawa, Takuya Washio, Yohei Seki, Keiichiro Okuyama, Osamu Ikeda, Hiroshi Tomiyama, Yoshinori Iwai, Akihiko Nakamura, Kozo Miyasaka
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Publication number: 20100112474Abstract: This invention provides a photosensitive composition, which can form a smooth photosensitive layer, has good storage stability, and exhibits high sensitivity when a blue-violet laser exposure system is used, a photosensitive film, a method for forming a permanent pattern using the photosensitive composition, and a printed board with a permanent pattern formed thereon by the method for forming a permanent pattern.Type: ApplicationFiled: September 12, 2007Publication date: May 6, 2010Applicant: FUJIFILM CorporationInventors: Masayuki Iwasaki, Hiroshi Kamikawa
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Patent number: 7235512Abstract: The present invention provides a heat-sensitive recording material comprising a substrate; and at least two heat-sensitive recording layers provided on the substrate, the heat-sensitive recording layers including microcapsules encapsulating an electron-donating dye precursor, and an electron-accepting compound, which reacts with the electron-donating dye precursor to develop a color and is disposed outside of the microcapsules, wherein the microcapsules include at least two kinds of microcapsules having different glass transition temperatures. A difference between each of the glass transition temperatures of the at least two microcapsules having different glass transition temperatures is preferably in a range from 20° C. to 70° C. According to the invention, a heat-sensitive recording material, which is superior in the reproduction of the gradation of an image and enables recording at high density, is obtained.Type: GrantFiled: March 25, 2003Date of Patent: June 26, 2007Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Kamikawa
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Patent number: 7176162Abstract: The present invention provides a heat-sensitive recording material including a support having disposed thereon a heat-sensitive recording layer containing microcapsules in which an electron-donating dye precursor is encapsulated and outside which an electron-accepting compound is present, the electron-donating dye precursor being capable of reacting with the electron-accepting compound to develop color, wherein the microcapsules include at least two kinds of microcapsules having mutually different volume average particle diameters or different glass transition temperatures. A difference between each of the glass transition temperatures of the at least two microcapsules having different glass transition temperatures is preferably in a range from 20° C. to 70° C. According to the invention, a heat-sensitive recording material, which is superior in the reproduction of the gradation of an image and enables recording at high density, is obtained.Type: GrantFiled: December 24, 2003Date of Patent: February 13, 2007Assignee: Fuji Photo Film Co., Ltd.Inventor: Hiroshi Kamikawa
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Publication number: 20040186019Abstract: The present invention provides a heat-sensitive recording material including a support having disposed thereon a heat-sensitive recording layer containing microcapsules in which an electron-donating dye precursor is encapsulated and outside which an electron-accepting compound is present, the electron-donating dye precursor being capable of reacting with the electron-accepting compound to develop color, wherein the microcapsules include at least two kinds of microcapsules having mutually different volume average particle diameters or different glass transition temperatures. A difference between each of the glass transition temperatures of the at least two microcapsules having different glass transition temperatures is preferably in a range from 20° C. to 70° C. According to the invention, a heat-sensitive recording material, which is superior in the reproduction of the gradation of an image and enables recording at high density, is obtained.Type: ApplicationFiled: December 24, 2003Publication date: September 23, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Hiroshi Kamikawa
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Publication number: 20030191022Abstract: The present invention provides a heat-sensitive recording material comprising a substrate; and at least two heat-sensitive recording layers provided on the substrate, the heat-sensitive recording layers including microcapsules encapsulating an electron-donating dye precursor, and an electron-accepting compound, which reacts with the electron-donating dye precursor to develop a color and is disposed outside of the microcapsules, wherein the microcapsules include at least two kinds of microcapsules having different glass transition temperatures. A difference between each of the glass transition temperatures of the at least two microcapsules having different glass transition temperatures is preferably in a range from 20° C. to 70° C. According to the invention, a heat-sensitive recording material, which is superior in the reproduction of the gradation of an image and enables recording at high density, is obtained.Type: ApplicationFiled: March 25, 2003Publication date: October 9, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Hiroshi Kamikawa
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Patent number: 5547806Abstract: The invention is directed to a process for producing microcapsules containing a diazonium salt compound by the steps of (i) adding a dialkyl sulfate compound represented by the formula: RO--SO.sub.2 --OR, where R is an alkyl or cycloalkyl group having up to 24 carbon atoms, to an organic solvent solution containing a diazonium salt compound and a polyfunctional isocyanate compound, (ii) emulsifying the resulting organic solvent solution into an aqueous solution of ,a water-soluble polymer, and then (iii) polymerizing the polyfunctional isocyanate compound to form microcapsule walls. The invention also discloses the recording material produced by the process.Type: GrantFiled: December 21, 1994Date of Patent: August 20, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Kamikawa, Sadao Ishige
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Patent number: 5543260Abstract: A diazo heat-sensitive recording material containing a support having provided thereon a recording layer containing a diazo compound, a coupler, and an organic base, wherein the diazo compound is a compound represented by formula (I): ##STR1## wherein R.sub.1 represents --C(Z.sub.1)(Z.sub.2)--CH.sub.2 --A, --CH.sub.2 --C(Z.sub.1)(Z.sub.2)--A or --{C(Z.sub.1)(Z.sub.2)}.sub.m --A,wherein Z.sub.1 represents an alkyl group, an aralkyl group or an aryl group; Z.sub.2 represents a hydrogen atom, an alkyl group, an aralkyl group or an aryl group; A represents a halogen atom, an acyl group, a cyano group, or a group containing at least one oxygen, nitrogen, phosphorus or sulfur atom through which A is bonded to --CH.sub.2 -- or Z.sub.2 ; and m represents an integer of 1 to 5;R.sub.2 and R.sub.3, which may be the same or different, each represent an alkyl group, an aralkyl group or an aryl group; R.sub.1 and R.sub.Type: GrantFiled: November 8, 1994Date of Patent: August 6, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Keiichi Tateishi, Sadao Ishige, Hiroshi Kamikawa
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Patent number: 5486446Abstract: A multi-color heat-sensitive recording material is disclosed which comprises a support having laminated thereon in the following order a first heat-sensitive color forming layer comprising mainly an electron donating dye precursor and an electron accepting compound, a second heat-sensitive color forming layer containing a diazonium salt compound having a maximum absorption wavelength of 360.+-.20 nm and a coupler capable of reacting with the diazonium salt compound by heating to form color and a third heat-sensitive color forming layer containing a diazonium salt compound represented by formula (I) having a maximum absorption wavelength of 400.+-.20 nm and a coupler represented by formula (II) capable of reacting with the diazonium salt compound by heating to form color: ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group, an aralkyl group or an aryl group; Y represents a halogen atom, an acyl group, an alkoxycarbonyl group or a sulfamoyl group; and X.sub.1.sup.Type: GrantFiled: June 8, 1994Date of Patent: January 23, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Tetunori Matushita, Hiroshi Kamikawa, Hiroshi Satoh, Kimiatus Nomura, Mitsuyuki Tsurumi
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Patent number: 5213939Abstract: A light- and heat-sensitive recording material is disclosed which includes a support having thereon a recording layer containing a diazo compound, a coupling component, and an organic base compound, wherein the diazo compound is a 1-substituted amino-3-alkoxybenzene-4-diazonium salt and the coupling component is a compound prepared from any of cyclohexane-1,3-dione, 3-cyclohexenone, or 2-cyclohexenone. The light- and heat-sensitive recording material according to the present invention can develop an excellent magenta color hue and has excellent storage properties before recording use (shelf life).Type: GrantFiled: September 23, 1991Date of Patent: May 25, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Takekatsu Sugiyama, Sadao Ishige, Naoto Yanagihara, Hiroshi Kamikawa, Keiichi Tateishi
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Patent number: 4975353Abstract: A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive recording layer which comprises (a) a diazo compound, (b) a coupling component which forms a coloration by coupling with the diazo compound, and (c) a basic substance having a structural unit represented by Formula (I): ##STR1##Type: GrantFiled: February 3, 1989Date of Patent: December 4, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuhiko Watanabe, Takekatsu Sugiyama, Sadao Ishige, Hiroshi Kamikawa
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Patent number: 4895826Abstract: A heat-sensitive recording material is disclosed, which comprises a support having thereon a heat-sensitive recording layer comprising a diazo compound and a coupler precursor compound, said coupler precursor compound being capable of forming a compound having an ability of coupling with said diazo compound upon heating.Type: GrantFiled: April 25, 1988Date of Patent: January 23, 1990Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuhiko Watanabe, Takayuki Hayashi, Hiroshi Kamikawa, Masato Satomura, Takekatsu Sugiyama
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Patent number: 4842979Abstract: A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive layer containing microcapsules containing at least one diazonium salt capable of azo-coupling with 2-hydroxy-3-naphthoic acid anilide to develop a blue color, a 2-hydroxy-3-naphthoic acid amide derivative, a benzoylacetic amide derivative represented by the following formula and a basic substance: ##STR1## wherein X represents a hydrogen atom, a halogen atom, a lower alkyl group or an alkoxy, aralkyloxy, phenoxy or acylamino group having up to 18 carbon atoms; Y represents an alkyl or aralkyl group having from 7 to 18 carbon atoms, an alkoxy, aralkyloxy, phenoxy, naphthyloxy, alkylthio, aralkylthio or phenylthio group having from 6 to 18 carbon atoms, a naphthylthio group, a sulfonyloxy group, a sulfamoyl gorup, a ureido group, a thioureido group or an acylamino group; X' and Y' each represents a hydrogen atom, a halogen atom, a lower alkyl group or a lower alkoxy group; and Y and Y' may combine to form a substitType: GrantFiled: November 30, 1987Date of Patent: June 27, 1989Assignee: Fuji Photo Film Co., Ltd.Inventors: Sadao Ishige, Toshimasa Usami, Hiroshi Kamikawa, Toshiharu Tanaka
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Patent number: 4737484Abstract: A heat-sensitive recording material is described, comprising a support having provided thereon a recording layer comprising a diazo compound and a coupling component, wherein the improvement comprises including said diazo compound and at least one compound selected from a polymerizable compound containing an ethylenically unsaturated bond therein or at least one compound capable of releasing a free radical upon exposure to light together in microcapsules.Type: GrantFiled: April 19, 1985Date of Patent: April 12, 1988Assignee: Fuji Photo Film Co., Ltd.Inventors: Masayuki Iwasaki, Hiroshi Kamikawa, Toshimasa Usami
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Patent number: D577393Type: GrantFiled: November 9, 2007Date of Patent: September 23, 2008Assignee: Kokuyo Co., Ltd.Inventors: Masaharu Nada, Hiroshi Kamikawa