Patents by Inventor Katsuro Nagaoka
Katsuro Nagaoka 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: 20070214467Abstract: An optical information recording carrier comprising: a back layer; a support; a recording layer; and a light transmitting layer, in this order, wherein each of the back layer and the light transmitting layer comprises at least one substrate film, wherein a difference between a hygroscopic expansion coefficient of the at least one substrate film and a hygroscopic expansion coefficient of the support is 10 ppm/% RH or more.Type: ApplicationFiled: May 16, 2005Publication date: September 13, 2007Applicant: FUJIFILM CorporationInventors: Kenichi Fukuda, Katsuro Nagaoka
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Publication number: 20070042173Abstract: An antireflection film comprising a support and a layer formed by coating a composition containing at least one salt formed from an organic base whose conjugate acid has a pKa of from 5.0 to 10.5 and an acid, wherein the antireflection film has a haze value due to surface scattering of 1% or more and less than 10%, or an antireflection film comprising a support and a layer formed by coating a composition containing at least one salt formed from a nitrogen-containing organic base having a boiling point of from 35° C. to 85° C. and an acid, wherein the antireflection film has a haze value due to surface scattering of 1% or more and less than 10%.Type: ApplicationFiled: August 21, 2006Publication date: February 22, 2007Applicant: Fuji Photo Film Co., Ltd.Inventors: Katsuro Nagaoka, Hiroyuki Yoneyama, Masaki Noro
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Patent number: 6740481Abstract: A silver halide color photographic material comprises at least one blue-sensitive emulsion layer (BL layer), at least one green-sensitive emulsion layer (GL layer) and at least one red-sensitive emulsion layer (RL layer) on a support. A maximum absorption wavelength of the green-sensitive emulsion layer represented by &lgr;max(G) is in the range of 500 nm≦&lgr;max(G)≦570 nm. The photographic material further has at least one short-wavelength-green-sensitive emulsion layer (CL layer) meeting the following requirements (i) and (ii): (i) a maximum absorption wavelength of the CL layer represented by &lgr;max(C) being in the range of 490 nm≦&lgr;max(C)≦560 nm, and 80 nm≧&lgr;max(G)−&lgr;max(C)≧5 nm, and (ii) the total iodine amount of silver halide grains contained in the CL layer being in the range from 60% to 300% of that contained in the green-sensitive emulsion layer.Type: GrantFiled: March 18, 2002Date of Patent: May 25, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Katsuro Nagaoka, Minoru Sato
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Publication number: 20030211430Abstract: A silver halide photosensitive material comprises at least one light-sensitive layer and at least one non-light-sensitive layer on a support. The photosensitive material contains at least one compound represented by general formula (1), and a ratio of fluorescent X-ray intensity of fluorine to fluorescent X-ray intensity of carbon, F/C, in the surface of the photosensitive material is 0.Type: ApplicationFiled: October 2, 2002Publication date: November 13, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Akira Ikeda, Katsuro Nagaoka, Terukazu Yanagi, Koichi Yokota
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Publication number: 20030068589Abstract: A silver halide color photographic material comprises at least one blue-sensitive emulsion layer (BL layer), at least one green-sensitive emulsion layer (GL layer) and at least one red-sensitive emulsion layer (RL layer) on a support. A maximum absorption wavelength of the green-sensitive emulsion layer represented by &lgr;max(G) is in the range of 500 nm≦&lgr;max(G)≦570 nm.Type: ApplicationFiled: March 18, 2002Publication date: April 10, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Katsuro Nagaoka, Minoru Sato
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Patent number: 6376164Abstract: A silver halide color reversal lightsensitive material comprising a transparent support and, superimposed thereon, a blue-sensitive emulsion layer unit, a green-sensitive emulsion layer unit and a red-sensitive emulsion layer unit, each of these units comprising at least two emulsion sub-layers having the same color sensitivity but different speeds from each other, wherein the material contains a yellow dye in an amount of 0.15 to 1.0 g/m2 and satisfies the relationship: 0.9≦&ggr;′/&ggr;≦1.25 wherein &ggr; and &ggr;′ each represent a point-gamma value of a portion of the material giving a magenta density of 1.Type: GrantFiled: October 20, 2000Date of Patent: April 23, 2002Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuyuki Haraguchi, Katsuro Nagaoka
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Patent number: 6187527Abstract: A silver halide color reversal lightsensitive material comprising a transparent support and, superimposed thereon, a blue-sensitive emulsion layer unit, a green-sensitive emulsion layer unit and a red-sensitive emulsion layer unit, each of these units comprising at least two emulsion sub-layers having the same color sensitivity but different speeds from each other, wherein the material contains a yellow dye in an amount of 0.15 to 1.0 g/m2 and satisfies the relationship: 0.9≦&ggr;′/&ggr;≦1.25 wherein &ggr; and &ggr;′ each represent a point-gamma value of a portion of the material giving a magenta density of 1.Type: GrantFiled: February 14, 2000Date of Patent: February 13, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Nobuyuki Haraguchi, Katsuro Nagaoka
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Patent number: 5691125Abstract: There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (I) and (a) a monodisperse silver halide emulsion, (b) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (c) a colloidal silver, (d) negative-type interval latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (e) a sensitizing dye containing a sulfonamide group, (f) three separated layers of high, medium, and low sensitivities, (g) two separated layers each having different content of iodine, (h) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, or (i) a DIR-hydroquinone: formula (I) ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent, R.sup.Type: GrantFiled: June 19, 1996Date of Patent: November 25, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Takefumi Hara, Kazuyoshi Yamakawa, Sadanobu Shuto, Mitsuru Yamamoto, Makoto Suzuki, Yasuhiro Shimada, Katsuro Nagaoka, Satoshi Nagaoka, Yoshihiko Shibahara, Hideo Ikeda
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Patent number: 5578436Abstract: There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (I) and (a) a monodisperse silver halide emulsion, (b) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (c) a colloidal silver, (d) negative-type interval latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (e) a sensitizing dye containing a sulfonamide group, (f) three separated layers of high, medium, and low sensitivities, (g) two separated layers each having different content of iodine, (h) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, or (i) a DIR-hydroquinone: formula (I) ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent, R.sup.Type: GrantFiled: May 30, 1995Date of Patent: November 26, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Takefumi Hara, Kazuyoshi Yamakawa, Sadanobu Shuto, Mitsuru Yamamoto, Makoto Suzuki, Yasuhiro Shimada, Katsuro Nagaoka, Satoshi Nagaoka, Yoshihiko Shibahara, Hideo Ikeda
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Patent number: 5578441Abstract: There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: formula (Ia) ##STR1## wherein the substituents are as defined herein the specification.Type: GrantFiled: September 30, 1994Date of Patent: November 26, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Nagaoka, Kazuyoshi Yamakawa, Mitsuru Yamamoto, Makoto Suzuki, Yasuhiro Shimada, Katsuro Nagaoka, Hideo Ikeda, Takefumi Hara, Sadanobu Shuto
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Patent number: 5518873Abstract: A silver halide light-sensitive emulsion and a silver halide light-sensitive material containing the same are disclosed, in which silver halide emulsion grains composed of an internal nucleus of silver bromide or silver iodobromide having a silver iodide content of not more than 1 mol % having provided thereon, in the order described, a first coating layer of silver iodobromide having a silver iodide content of from 2 to 20 mol % and a second coating layer of silver iodobromide or silver bromide a silver iodide content of which is lower than that of said first coat and is not more than 3 mol %, and are further composed of iodide phrases which are formed by halogen conversion with an iodide ion, by addition of silver iodide fine grains or by addition of a silver ion and an iodide ion at any stage during formation of 3 to 97% of the total amount of silver and after completion of the formation of the second coating layer.Type: GrantFiled: January 10, 1995Date of Patent: May 21, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Ryutaro Konishi, Hiroshi Tamaoki, Masayuki Kuramitu, Hideo Ikeda, Katsuro Nagaoka
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Patent number: 5460929Abstract: There is disclosed a silver halide color photographic material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, a blue-sensitive silver halide emulsion layer, which comprises a cyan dye-forming coupler represented by formula (Ia) and (a) a sensitizing dye containing a sulfonamide group, (b) negative-type internal latent image-type silver halide grains chemically sensitized to a defined depth from the surface, (c) grains each having a defined spectral sensitivity distribution and a DIR-hydroquinone, (d) a monodisperse silver halide emulsion, (e) non-photosensitive silver halide emulsion wherein the inside or the surface of grains is fogged, (f) a colloidal silver, or (g) a DIR-hydroquinone: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--, Zb and Zc each represent --C(R.sub.4).dbd. or --N.dbd., R.sub.1, R.sub.2, and R.sub.3 each represent an electron-attracting group wherein the Hammett substituent constant .sigma..sub.p value is 0.Type: GrantFiled: April 14, 1993Date of Patent: October 24, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Satoshi Nagaoka, Kazuyoshi Yamakawa, Mitsuru Yamamoto, Makoto Suzuki, Yasuhiro Shimada, Katsuro Nagaoka, Hideo Ikeda, Takefumi Hara, Sadanobu Shuto
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Patent number: 5273866Abstract: A silver halide color photographic material comprising: a support; at least a blue-sensitive emulsion layer, a green-sensitive emulsion layer, and a red-sensitive emulsion layer on the support, and one or more hydrophilic colloidal layers thereon containing a dispersion of microcrystals of at least one compound represented by general formulae (I), (II), (III), (IV), (V), and (VI); and at least one light-sensitive silver halide emulsion layer having a silver density (d) of 0.4 g/cm.sup.3 or more, wherein d is N/V; where N represents the total number of grams of silver in said one or more light-sensitive silver halide emulsion layers and V represents the cm.sup.3 of said light-sensitive silver halide emulsion layer.Type: GrantFiled: March 27, 1992Date of Patent: December 28, 1993Assignee: Fuji Photo Film Co., Ltd.Inventors: Munehisa Fujita, Katsuro Nagaoka, Shinsuke Bando
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Patent number: 5248588Abstract: Disclosed is a silver halide photographic material, comprising a support having thereon (i) a silver halide emulsion layer which contains negative-working internal latent image-forming silver halide grains which have been chemically sensitized to a depth of less than 0.02 micrometer from the surface of the grain, and (ii) palladium in an amount from 1.times.10.sup.-9 to 1.times.10.sup.-2 mol per mol of coated silver halide.Type: GrantFiled: May 22, 1991Date of Patent: September 28, 1993Assignee: Fuji Photo Film Co., Ltd.Inventor: Katsuro Nagaoka
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Patent number: 5156946Abstract: A silver halide photographic material comprising at least one silver halide emulsion layer on a support, wherein the latent image distribution of silver halide grains contained in the at least one emulsion layer has at least one peak value within the grains, the location of the peak value is at a depth of less than 0.01 .mu.m from the surface of the grains, and the average silver iodide content of the grains is about 15 mol % or less.Type: GrantFiled: May 25, 1989Date of Patent: October 20, 1992Assignee: Fuji Photo Film Co., LtdInventors: Katsuro Nagaoka, Shinsuke Bando, Takefumi Hara