Patents by Inventor Hirohisa Hokazono

Hirohisa Hokazono 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: 20050186360
    Abstract: A cellulose acylate film is provided that includes a cellulose acylate that satisfies the degrees of substitution below, and a hydrolysis-condensation product of a hydrolyzable and polycondensable reactive metal compound. 2.5?A+B?3.0 0?A?2.95 (In the expressions, A denotes the degree of substitution by acetyl, and B denotes the total of the degrees of substitution by acyl groups other than acetyl). There is also provided a process for producing the cellulose acylate film, the process including a step of preparing a solution that includes the cellulose acylate above, an oligomeric hydrolysis-condensation product of a hydrolyzable and polycondensable reactive metal compound, and a solvent, a step of casting the solution on a support, and a step of forming a film by removing the solvent and drying.
    Type: Application
    Filed: February 18, 2005
    Publication date: August 25, 2005
    Applicant: Fuji Film Photo Co., Ltd.
    Inventors: Toyohisa Oya, Hirohisa Hokazono
  • Patent number: 6888593
    Abstract: There is disclosed an anti-glare and anti-reflection film, which has a transparent support, and at least one low-refractive-index layer that comprises a fluorine-containing resin and has a refractive index in the range from 1.38 to 1.49, wherein the film comprises an anti-glare layer that is disposed between the support and the low-refractive-index layer and that contains a binder having a refractive index in the range from 1.57 to 2.00. The anti-glare and anti-reflection film, which has sufficient anti-reflection property, resistance to damage, and stain-proofing property, and free from uneven color, can be produced simply and inexpensive manner. There is also disclosed a polarizing plate and an image display device, each utilizing the anti-glare and anti-reflection film.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: May 3, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Nakamura, Ichiro Amimori, Hirohisa Hokazono, Jun Watanabe
  • Patent number: 6873387
    Abstract: An antireflection film is disclosed, comprising a transparent support having thereon a low refractive index layer having a refractive index of 1.35 to 1.49 and containing a hydrolysate of an organosilane or a partial condensate thereof, a compound capable of generating a reaction accelerator under light, and a fluorine-containing polymer. This antireflection film has high antireflection performance and excellent resistance against fouling and scratching and can be produced at a low cost.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: March 29, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirohisa Hokazono, Ichiro Amimori, Kazuhiro Nakamura
  • Patent number: 6830348
    Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided. An antiglare and antireflection film is provided, comprising a transparent support having thereon an antiglare hard coat layer and a low refractive index layer having a refractive index of 1.38 to 1.49, wherein the low refractive index layer is formed by a coating method, the solvent of the coating solution for forming the low refractive index layer comprises one or more solvent, and from 50 to 100% by mass of the solvent is a solvent having a boiling point of 100° C. or less. A polarizer and a liquid crystal display device using this film are also provided.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: December 14, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
  • Patent number: 6794469
    Abstract: A fluorine-containing copolymer of the following formula. A film-forming composition containing the copolymer. An anti-reflection film having a low-refractive-index layer containing the copolymer. An anti-reflection film having the above anti-reflection film on a transparent support. An image display device having the anti-reflection film.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: September 21, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tatsuhiko Obayashi, Hirohisa Hokazono, Takafumi Hosokawa
  • Publication number: 20040114248
    Abstract: An antireflection film having a low reflectance and giving non-tinged reflected light with a low cost, which comprises: a transparent substrate; and a low-refractive layer having a lower refractive index than said transparent substrate, wherein the antireflection film has an average specular reflectance of 0.5% or less at an incidence angle of 5° in a wavelength region of from 450 to 650 nm, and, when CIE standard illuminant D65 in a wavelength region of from 380 to 780 nm is incident on the antireflection film at an incidence angle of 5°, the regular reflection light has a color having a* and b* values in a ranges specified by −7≦a*≦7 and −10*≦b*≦10 in the CIE 1976 L*a*b* color space.
    Type: Application
    Filed: September 30, 2003
    Publication date: June 17, 2004
    Inventors: Hirohisa Hokazono, Kazuhiro Nakamura
  • Patent number: 6693746
    Abstract: There is disclosed an anti-glare and anti-reflection film, which has a transparent support, and at least one low-refractive-index layer that comprises a fluorine-containing resin and has a refractive index in the range from 1.38 to 1.49, wherein the film comprises an anti-glare layer that is disposed between the support and the low-refractive-index layer and that contains a binder having a refractive index in the range from 1.57 to 2.00. The anti-glare and anti-reflection film, which has sufficient anti-reflection property, resistance to damage, and stain-proofing property, and free from uneven color, can be produced simply and inexpensive manner. There is also disclosed a polarizing plate and an image display device, each utilizing the anti-glare and anti-reflection film.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: February 17, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Nakamura, Ichiro Amimori, Hirohisa Hokazono, Jun Watanabe
  • Patent number: 6670410
    Abstract: An ink for ink-jet recording which comprises a color composition prepared by dispersing, in a water-based medium, coloring particulates that contain an oil-soluble dye and a vinyl polymer which is obtained through copolymerization of a monomer represented by general formula (I) as follows: in which general formula (I): R11 represents a hydrogen atom, a chlorine atom, or the like; L1 represents —O—, —COO—, or the like; X1 represents —CH2—, —CHR13—, or the like; q is 2 or more if L1 is —COO—, and q is 1 or more in other cases; L2 represents —O—, —CO—, or the like; r is 0 or 1; X2 represents —CH2—, —CH2CHR13—, or the like; s is from 0 to 18; R12 and R15 each independently represents a hydrogen atom, or the like; and R13 and R14 each independently represents a substituted or unsubstituted alkyl group, or the like.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: December 30, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takahiro Ishizuka, Hirohisa Hokazono, Junichi Yamanouchi
  • Publication number: 20030120008
    Abstract: A fluorine-containing copolymer of the following formula. A film-forming composition containing the copolymer. An anti-reflection film having a low-refractive-index layer containing the copolymer. An anti-reflection film having the above anti-reflection film on a transparent support. An image display device having the anti-reflection film.
    Type: Application
    Filed: April 12, 2002
    Publication date: June 26, 2003
    Inventors: Tatsuhiko Obayashi, Hirohisa Hokazono, Takafumi Hosokawa
  • Publication number: 20030112519
    Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided.
    Type: Application
    Filed: November 5, 2002
    Publication date: June 19, 2003
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
  • Patent number: 6502943
    Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided. An antiglare and antireflection film is provided, comprising a transparent support having thereon an antiglare hard coat layer and a low refractive index layer having a refractive index of 1.38 to 1.49, wherein the low refractive index layer is formed by a coating method, the solvent of the coating solution for forming the low refractive index layer comprises one or more solvent, and from 50 to 100% by mass of the solvent is a solvent having a boiling point of 100° C. or less. A polarizer and a liquid crystal display device using this film are also provided.
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: January 7, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
  • Publication number: 20020034013
    Abstract: An antiglare and antireflection film is provided, which can be formed by a wet-coating method and which is excellent in the antireflection property, antifouling property, scratch resistance, clearness of transmitted image and planar uniformity. A polarizer and a liquid crystal display device using this film are also provided.
    Type: Application
    Filed: July 11, 2001
    Publication date: March 21, 2002
    Inventors: Kazuhiro Nakamura, Naohiro Matsunaga, Tsutomu Arai, Shinichi Otani, Hidekazu Yamazaki, Hirohisa Hokazono
  • Publication number: 20020025994
    Abstract: An ink for ink-jet recording which comprises a color composition prepared by dispersing, in a water-based medium, coloring particulates that contain an oil-soluble dye and a vinyl polymer which is obtained through copolymerization of a monomer represented by general formula (I) as follows: 1
    Type: Application
    Filed: May 23, 2001
    Publication date: February 28, 2002
    Inventors: Takahiro Ishizuka, Hirohisa Hokazono, Junichi Yamanouchi
  • Publication number: 20010050741
    Abstract: An antireflection film is disclosed, comprising a transparent support having thereon a low refractive index layer having a refractive index of 1.35 to 1.49 and containing a hydrolysate of an organosilane or a partial condensate thereof, a compound capable of generating a reaction accelerator under light, and a fluorine-containing polymer. This antireflection film has high antireflection performance and excellent resistance against fouling and scratching and can be produced at a low cost.
    Type: Application
    Filed: February 28, 2001
    Publication date: December 13, 2001
    Inventors: Hirohisa Hokazono, Ichiro Amimori, Kazuhiro Nakamura
  • Patent number: 6043010
    Abstract: An object of the present invention is to provide a silver halide photographic material having improved antiblocking property without deterioration of film brittleness and image quality due to addition of a polymer latex.A silver halide photographic material having at least one silver halide emulsion layer and at least one nonsensitive protective layer on a support, in which the nonsensitive protective layer contains polymer grains represented by the following General Formula (1) in a proportion by weight of 5 to 300% to a hydrophilic colloid as a binder, and the polymer grains have a mean grain diameter of at most 0.1 .mu.m,--(A).sub.x --(B).sub.y --(C).sub.
    Type: Grant
    Filed: March 18, 1998
    Date of Patent: March 28, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hirohisa Hokazono, Tomokazu Yasuda, Kentaro Shiratsuchi, Takashi Ozawa
  • Patent number: 5919555
    Abstract: An anti-reflection film comprises a transparent support and a low refractive index layer. The low refractive index layer has a refractive index of not higher than 1.45. The low refractive index layer comprises a binder polymer and micro polymer particles. The micro polymer particles are superposed upon each other to form micro voids surrounded by the particles. The micro polymer particles have a mean particle size in the range of 5 to 200 nm. According to the first embodiment of the present invention, the particles comprise a cross-linked polymer. According to the second embodiment of the present invention, the particles comprise a polymer cross-linked to the binder polymer.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: July 6, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomokazu Yasuda, Tsukasa Yamada, Hirohisa Hokazono
  • Patent number: 5856379
    Abstract: An aqueous dispersion of core/shell type composite particles having colloidal silica as the cores and having an organic polymer as the shells is disclosed, comprising an aqueous dispersion of particles obtained by carring out a reaction operation of coupling reacting (a) colloidal silica and (b) an organoalkoxysilane in an aqueous medium in the presence of a dispersion stabilizer and thereafter polymerizing the coupling reaction product and (c) a vinyl monomer having at least one ethylenically unsaturated group, and further a method for producing the aqueous dispersion is disclosed.The aqueous dispersion has a good dispersion stability, by-produces less polymer sole particles, and a high coating degree of a polymer on the surfaces of the silica particles.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: January 5, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kentaro Shiratsuchi, Hirohisa Hokazono