Patents by Inventor Mamoru Sakurazawa

Mamoru Sakurazawa 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).

  • Publication number: 20090159857
    Abstract: An optical film, which has been subjected to an orientation treatment, containing a low-molecular weight compound, in which a birefringence ?n(550 nm) is larger than zero (0) in an orientation direction, and the optical film satisfies the following expressions (1) and (2); and a phase difference plate, a polarizing plate and a liquid crystal display using the same: 0.5<?n(450 nm)/?n(550 nm)<1.0; and??Expression (1) 1.05<?n(630 nm)/?n(550 nm)<1.5.
    Type: Application
    Filed: February 7, 2007
    Publication date: June 25, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Shigeki Uehira, Michitaka Matsuumi, Mamoru Sakurazawa, Masaki Okazaki, Naoyuki Nishikawa
  • Publication number: 20090122237
    Abstract: A polymer film, which comprises: organic compound fine particles containing a retardation developer and having an average particle size of from 1 nm to 1,000 nm; a method for producing a polymer film, which comprises: casting a dope containing a polymer, a solvent for dissolving the polymer, a retardation developer and an additive other than the retardation developer on a support; peeling off; drying; and stretching, wherein the retardation developer is uniformly dissolved in the dope, and between the casting and the stretching, organic compound fine particles containing the retardation developer are formed within a film; and an optical film, which comprises: at least one compound represented by formula (I) as defined in the specification; and at least one Rth raising agent.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 14, 2009
    Applicant: FUJIFILM Corporation
    Inventors: Nobutaka Fukagawa, Shigeki Uehira, Yutaka Nozoe, Mamoru Sakurazawa, Susumu Sugiyama, Teruki Niori
  • Publication number: 20090103014
    Abstract: A cellulose acylate film comprising: (A) at least one retardation regulator that has an absorbance, in terms of a 1.0 g/liter solution, of 0.1 or less for a 1 cm path length within a wavelength region of 450 nm or greater but not greater than 800 nm; and (B) at least one near infrared absorber that has at least one maximum absorption wavelength at 700 nm or greater but not greater than 1200 nm and has an absorbance, in terms of a 1.0 g/liter solution, of 30.0 or less for a 1 cm path length within a wavelength region of 450 nm or greater but not greater than 650 nm.
    Type: Application
    Filed: June 23, 2006
    Publication date: April 23, 2009
    Applicant: FUJI FILM Corporation
    Inventors: Mamoru Sakurazawa, Yutaka Nozoe, Tomohiro Ogawa
  • Patent number: 7439309
    Abstract: Disclosed is a silver halide photographic light-sensitive material, which has at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z-SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: October 21, 2008
    Assignee: Fujifilm Corporation
    Inventors: Terukazu Yanagi, Makiko Yokoi, Mamoru Sakurazawa, Yoshihisa Tsukada, Seiji Hatano
  • Publication number: 20080213511
    Abstract: An optical compensation film with optically biaxial properties, wherein the longer the wavelength is, the larger the wavelength dispersion of a retardation Re in an in-plane direction and a retardation Rth in a thickness direction against light in a visible light region is; the film contains at least one inorganic particle; a concentration of the inorganic particle in a film surface layer is from 0.05% to 1.0%; an average concentration of the inorganic particle in the film is from 0.01% to 0.3%; and the concentration of the inorganic particle in the surface layer is larger than the average concentration of the inorganic particle in the film.
    Type: Application
    Filed: January 23, 2008
    Publication date: September 4, 2008
    Applicant: FUJIFILM Corporation
    Inventors: Akira Ikeda, Mamoru Sakurazawa
  • Publication number: 20080173215
    Abstract: A cellulose acylate film comprising: at least one retardation regulator; and at least one UV absorber having at least one absorption maximum in a wavelength range of from 250 nm to 380 nm.
    Type: Application
    Filed: March 10, 2006
    Publication date: July 24, 2008
    Applicant: FUJIFILM Corporation
    Inventors: Mamoru Sakurazawa, Yutaka Nozoe
  • Publication number: 20080165312
    Abstract: An optical compensation sheet, which contains a cellulose acylate film that contains 1 to 20 parts by mass of a retardation controlling agent, to 100 parts by mass of a cellulose acylate, wherein the retardation controlling agent comprises at least two compounds different in Re/Rth ratios each other; and a liquid crystal display device, which contains the optical compensation sheet.
    Type: Application
    Filed: February 22, 2006
    Publication date: July 10, 2008
    Inventors: Mamoru Sakurazawa, Akihiro Matsufuji
  • Publication number: 20080032067
    Abstract: A cellulose acylate film includes a cellulose acylate, a polymer obtained by polymerizing an ethylenically unsaturated monomer and an unreacted ethylenically unsaturated monomer in an amount of 1 mass % or less based on the cellulose acylate film.
    Type: Application
    Filed: July 23, 2007
    Publication date: February 7, 2008
    Applicant: FUJIFILM Corporation
    Inventors: Mamoru Sakurazawa, Akihiro Matsufuji, Yasuo Mukunoki
  • Publication number: 20070298348
    Abstract: A silver halide color photographic light-sensitive material having, on a support, at least each one light-sensitive silver halide emulsion layers containing yellow-, magenta-, or cyan-dye-forming-coupler, and at least one light-insensitive hydrophilic colloid layer, wherein at least one of the dye-forming couplers is a dye-forming coupler that forms an azomethine dye having a solubility of 1×10?8 mol/L to 5×10?3 mol/L in ethyl acetate; and an image forming method using the light-sensitive material.
    Type: Application
    Filed: August 23, 2005
    Publication date: December 27, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Yasuaki Deguchi, Kiyoshi Takeuchi, Mamoru Sakurazawa, Makoto Yamada, Takehiko Satou
  • Publication number: 20070290168
    Abstract: A resin film has a photoelastic coefficient of from 0 to 30×10?8 cm2/N; and Re satisfying the following formulae (1) to (4): 20 nm<Re(548)<300 nm : ??Formula (1) 0.5<Re(446)/Re(548)<1 : ??Formula (2) 1.0<Re(629)/Re(548)<2.0 : ??Formula (3) 0.1%?[{Re(548) at 25° C., 10% RH?Re(548) at 25° C., 80% RH}/Re(548) at 25° C., 60% RH]?20%, : ??Formula (4) wherein Re(?) represents an in-plane retardation at a wavelength of ?.
    Type: Application
    Filed: June 15, 2007
    Publication date: December 20, 2007
    Applicant: FUJIFILM Corporation
    Inventors: Nobutaka Fukagawa, Mamoru Sakurazawa, Shigeki Uehira, Masaki Noro
  • Patent number: 7241563
    Abstract: A silver halide color photographic light-sensitive material having a silver halide emulsion layer, and (1) a substantially light-insensitive dye-forming-coupler-containing layer, and (2) at least one layer selected from a non-color-forming intermediate layer containing a color-mixing inhibitor and a non-color-forming intermediate layer substantially free of color-mixing inhibitor, wherein i) when the light-insensitive dye-forming-coupler-containing layer is included, the layer is positioned adjacent to the silver halide emulsion layer, and ii) when the non-color-forming intermediate layer containing a color-mixing inhibitor and the non-color-forming intermediate layer substantially free of color-mixing inhibitor are included, these layers are positioned adjacent to each other.
    Type: Grant
    Filed: November 8, 2004
    Date of Patent: July 10, 2007
    Assignee: FUJIFILM Corporation
    Inventors: Mamoru Sakurazawa, Jun Arakawa
  • Publication number: 20070077373
    Abstract: A polymer film, which comprises: at least one liquid crystalline compound; and a compound having a dielectric constant ? of 4.0 or more, wherein a haze of the polymer film is 1.5% or less; and a polarizing plate and a liquid crystal display device using the polymer film.
    Type: Application
    Filed: September 28, 2006
    Publication date: April 5, 2007
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Hiromoto Haruta, Osamu Takahashi, Mamoru Sakurazawa
  • Publication number: 20050171296
    Abstract: Disclosed is a silver halide photographic light-sensitive material, which has at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z-SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.
    Type: Application
    Filed: March 22, 2005
    Publication date: August 4, 2005
    Inventors: Terukazu Yanagi, Makiko Yokoi, Mamoru Sakurazawa, Yoshihisa Tsukada, Seiji Hatano
  • Patent number: 6897014
    Abstract: Disclosed is a silver halide photographic light-sensitive material, which comprises at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z—SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: May 24, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Terukazu Yanagi, Makiko Yokoi, Mamoru Sakurazawa, Yoshihisa Tsukada, Seiji Hatano
  • Publication number: 20050100835
    Abstract: A silver halide color photographic light-sensitive material having a silver halide emulsion layer, and (1) a substantially light-insensitive dye-forming-coupler-containing layer, and (2) at least one layer selected from a non-color-forming intermediate layer containing a color-mixing inhibitor and a non-color-forming intermediate layer substantially free of color-mixing inhibitor, wherein i) when the light-insensitive dye-forming-coupler-containing layer is included, the layer is positioned adjacent to the silver halide emulsion layer, and ii) when the non-color-forming intermediate layer containing a color-mixing inhibitor and the non-color-forming intermediate layer substantially free of color-mixing inhibitor are included, these layers are positioned adjacent to each other.
    Type: Application
    Filed: November 8, 2004
    Publication date: May 12, 2005
    Inventors: Mamoru Sakurazawa, Jun Arakawa
  • Patent number: 6878513
    Abstract: A modified gelatin obtained by reacting (A) a gelatin and (B) a compound which contains a nitrogenous aromatic ring having a mercapto group to form covalent bond with a reactive group in the gelatin, an introduction amount of the compound in the gelatin being 1.0×10?6 mol to 2.0×10?3 mol per 100 g of the gelatin.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: April 12, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Terukazu Yanagi, Mamoru Sakurazawa, Naohiro Takeda, Yoichi Maruyama, Katsuyuki Takada
  • Publication number: 20040038160
    Abstract: Disclosed is a silver halide photographic light-sensitive material, which comprises at least one polymer compound having a nitrogen-containing aromatic ring having a mercapto group represented by the formula Z—SH wherein Z represents a nitrogen-containing aromatic ring as a partial structure. This silver halide photographic light-sensitive material can stably contain silver halide grains of a high aspect ratio showing high sensitivity and superior planarity, shows superior pressure resistance and can be stably prepared.
    Type: Application
    Filed: February 14, 2003
    Publication date: February 26, 2004
    Inventors: Terukazu Yanagi, Makiko Yokoi, Mamoru Sakurazawa, Yoshihisa Tsukada, Seiji Hatano
  • Patent number: 6696234
    Abstract: A silver halide photosensitive material contains a compound of the following general formula (I): wherein A1a represents a group selected from among CR1aR2a, NR1a, an oxygen atom and sulfur atom, A1b represents a group selected from among CR1bR2b, NR1b, an oxygen atom and sulfur atom, and each of R1a, R2a, R1b, R2b and R3 represents a hydrogen atom or a substituent, provided that, in the groups of CR1aR2a and CR1bR2b, R1aR2a and R1bR2b may represent a single divalent substituent, n represents an integer of 1 to 4, provided that, when n is 2 or more, a plurality of A1bs may be the same or different.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: February 24, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadashi Inaba, Masaru Takasaki, Atsushi Matsunaga, Mamoru Sakurazawa, Shinichi Ichikawa
  • Patent number: 6689553
    Abstract: A silver halide photographic emulsion that comprises silver halide grains. The emulsion was prepared in the presence of at least one halogen oxoacid salt represented by formula (I) below: M(XOn)m  (I) wherein M represents an alkali metal ion or alkaline-earth metal ion, X represents a halogen atom, n represents 2 or 3, and m represents 1 or 2. A silver halide photographic light-sensitive material that has at least one silver halide emulsion layer on a support. The material contains the above silver halide photographic emulsion.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: February 10, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mamoru Sakurazawa, Takeshi Funakubo, Hirotomo Sasaki, Kiyoshi Morimoto
  • Publication number: 20030190566
    Abstract: A silver halide photosensitive material contains a compound of the following general formula (I): 1
    Type: Application
    Filed: September 24, 2002
    Publication date: October 9, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Tadashi Inaba, Masaru Takasaki, Atsushi Matsunaga, Mamoru Sakurazawa, Shinichi Ichikawa