Patents by Inventor Akihiro Matsufuji

Akihiro Matsufuji 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).

  • Patent number: 7190354
    Abstract: A touch panel comprising: a cellulose film provide with a hard coat layer having a pencil hardness of 2H or more; a polarizing film; a retardation plate; a first transparent conductive film; a second transparent conductive film; and a substrate, in this order, wherein the first and second transparent conductive films are provided so as to face to each other, and the cellulose film, the hard coat layer, the polarizing film, the retardation plate and the first transparent conductive film define a movable substrate.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: March 13, 2007
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Tanaka, Katsumi Inoue, Akihiro Matsufuji, Kenichiro Hatayama, Kentaro Shiratsuchi
  • Publication number: 20070048531
    Abstract: To provide a curing composition suitable for forming an antifouling hard coat layer having high surface hardness, excellent in scratch resistance, and having an antifouling property lasting long; and to provide an optical information recording media having scratch resisting and antifouling properties, and persistent reading characteristics of records, the curing composition includes an actinic energy-curing resin, wherein the actinic energy-curing resin hass a silicone resin having a silicon content of from 23 to 32 weight %; and the optical information recording material has a light-transmitting layer formed by coating and curing the curing composition, wherein a coating amount of the silicone resin is from 0.4 to 45 mg/n2.
    Type: Application
    Filed: October 4, 2004
    Publication date: March 1, 2007
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Katsurou Nagaoka, Akihiro Matsufuji, Kenichi Fukuda
  • Patent number: 7170684
    Abstract: A plastic film comprising a transparent plastic substrate, a primer layer and a functional layer in this order wherein a refractive index ns of the substrate and a refractive index nH of the functional layer satisfy the following formula (1): 0.03?|ns?nH| and an average reflectance of light of from 540 to 550 nm in wavelength incidenting perpendicular onto a face of the film at an interface among the functional layer and the substrate is 0.02% or less.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: January 30, 2007
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kenichi Fukuda, Akihiro Matsufuji
  • Publication number: 20060221275
    Abstract: An optical compensation sheet is provided and includes: a cellulose acylate film having optical anisotropy and meeting all of requirements represented by the following expressions (1) to (3); and an optically anisotropic layer having a slow axis orthogonal to a slow axis of the cellulose acylate film. 2.6?X+Y<3.0??Expression (1) 0?X?1.8??Expression (2) 1.0?Y<3.0??Expression (3) X represents a substitution degree of acetyl group and Y represents a total sum of substitution degrees of propionyl, butanoyl, pentanoyl and hexanoyl groups.
    Type: Application
    Filed: March 20, 2006
    Publication date: October 5, 2006
    Inventor: Akihiro Matsufuji
  • Publication number: 20060056030
    Abstract: A plastic film comprising a transparent plastic substrate, a primer layer and a functional layer in this order wherein a refractive index ns of the substrate and a refractive index nH of the functional layer satisfy the following formula (1): 0.03?|ns?nH| and an average reflectance of light of from 540 to 550 nm in wavelength incidenting perpendicular onto a face of the film at an interface among the functional layer and the substrate is 0.02% or less.
    Type: Application
    Filed: June 23, 2003
    Publication date: March 16, 2006
    Applicant: Fuji Photo Film Co., Ltd.
    Inventors: Kenichi Fukuda, Akihiro Matsufuji
  • Patent number: 6777102
    Abstract: A curable composition that is curable by polymerizing both a group capable of ring-opening polymerization and an ethylenically unsaturated group includes a cross-linkable polymer containing a repeating unit represented by the formula below, the group capable of ring-opening polymerization being present in a side chain of the polymer. A hardcoated article is formed by curing the curable composition. Its hardcoat layer has a pencil hardness of 4H to 9H. A hardcoated film is formed by coating on a plastic film the curable composition and curing it. The hardcoated film is used, for example, to laminate the front face of an image display device. In the formula, R1 denotes hydrogen or an alkyl group having 1 to 4 carbon atoms, P1 is a monovalent group containing a group capable of ring-opening polymerization, and L1 is a single bond or a divalent linking group.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: August 17, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Seiya Sakurai, Yuuzou Muramatsu, Akihiro Matsufuji, Kenichirou Hatayama
  • Publication number: 20040077752
    Abstract: The present invention relates to a cellulose acylate film having a high modulus of elasticity and a high surface hardness. The cellulose acylate film of the present invention is characterized by containing 1 vol % to 99 vol % of a metal oxide having an average particle size of 1 nm to 400 nm. The metal oxide used here is preferably a metal oxide having a Mohs hardness of at least 7, and specific examples thereof include aluminum oxide and silicon dioxide. This metal oxide may be subjected to a surface treatment. Furthermore, a functional thin film such as a hardcoat layer may be formed on the cellulose acylate film containing the metal oxide.
    Type: Application
    Filed: July 25, 2003
    Publication date: April 22, 2004
    Inventors: Akihiro Matsufuji, Yuuzou Muramatsu, Yukio Shinagawa
  • Patent number: 6686031
    Abstract: A hard coat film comprising; a transparent support; and a hard coat layer thereon; the hard coat layer containing surface-treated inorganic fine particles and a crosslinked binder polymer; the surface treatment being carried out using, as a surface treatment agent, an organic compound containing an anionic functional group or an organometallic compound; and the binder polymer being formed by crosslinking a radiation polymerizable compound. A display device is also disclosed wherein a hard coat film having antireflection properties is formed on the display surface thereof.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: February 3, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Matsufuji, Kiyokazu Hashimoto, Tsukasa Yamada, Kenichiro Hatayama, Yuuzou Muramatsu
  • Publication number: 20040017364
    Abstract: A touch panel comprising: a cellulose film provide with a hard coat layer having a pencil hardness of 2H or more; a polarizing film; a retardation plate; a first transparent conductive film; a second transparent conductive film; and a substrate, in this order, wherein the first and second transparent conductive films are provided so as to face to each other, and the cellulose film, the hard coat layer, the polarizing film, the retardation plate and the first transparent conductive film define a movable substrate.
    Type: Application
    Filed: July 15, 2003
    Publication date: January 29, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Makoto Tanaka, Katsumi Inoue, Akihiro Matsufuji, Kenichiro Hatayama, Kentaro Shiratsuchi
  • Publication number: 20030004221
    Abstract: A curable composition that is curable by polymerizing both a group capable of ring-opening polymerization and an ethylenically unsaturated group includes a cross-linkable polymer containing a repeating unit represented by the formula below, the group capable of ring-opening polymerization being present in a side chain of the polymer. A hardcoated article is formed by curing the curable composition. Its hardcoat layer has a pencil hardness of 4H to 9H. A hardcoated film is formed by coating on a plastic film the curable composition and curing it. The hardcoated film is used, for example, to laminate the front face of an image display device.
    Type: Application
    Filed: February 22, 2002
    Publication date: January 2, 2003
    Inventors: Seiya Sakurai, Yuuzou Muramatsu, Akihiro Matsufuji, Kenichirou Hatayama
  • Patent number: 6480250
    Abstract: A low-reflection transparent conductive multi layer film to be attached to the front panel of cathode-ray tubes or plasma displays comprising, in the order described, a transparent substrate, a hard coat layer, a transparent conductive layer containing particles comprising at least one of a metal and a metal oxide, and at least one transparent protective layer which has anti-smudge properties, has a refractive index different from that of the transparent conductive layer and comprises a resin having a high dielectric power factor.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: November 12, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Matsufuji, Kenichiro Hatayama, Takahiro Moto, Yasuo Mukunoki
  • Publication number: 20020018886
    Abstract: A hard coat film comprising; a transparent support; and a hard coat layer thereon; the hard coat layer containing surface-treated inorganic fine particles and a crosslinked binder polymer; the surface treatment being carried out using, as a surface treatment agent, an organic compound containing an anionic functional group or an organometallic compound; and the binder polymer being formed by crosslinking a radiation polymerizable compound. A display device is also disclosed wherein a hard coat film having antireflection properties is formed on the display surface thereof.
    Type: Application
    Filed: February 22, 2001
    Publication date: February 14, 2002
    Inventors: Akihiro Matsufuji, Kiyokazu Hashimoto, Tsukasa Yamada, Kenichiro Hatayama, Yuuzou Muramatsu
  • Patent number: 6235427
    Abstract: A nonaqueous secondary battery is disclosed, comprising a positive electrode having a positive electrode active material, a negative electrode having a negative electrode material, and a nonaqueous electrolyte, wherein the positive electrode active material is a transition metal oxide capable of intercalating and deintercalating lithium, and the negative electrode material comprises at least one silicic material capable of intercalating and deintercalating lithium selected from silicon, a silicon alloy and a silicide, and a process for producing the nonaqueous secondary battery is disclosed.
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: May 22, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshio Idota, Akihiro Matsufuji, Nobufumi Mori, Akira Kase, Yoshikatsu Kagawa, Hajime Miyamoto
  • Patent number: 5759714
    Abstract: There is disclosed a non-aqueous-electrolyte secondary battery comprising a positive electrode including a material capable of reversibly absorbing and releasing lithium, a negative electrode, a non-aqueous electrolyte containing a lithium salt, and a separator of the secondary battery the negative electrode comprises a material mainly comprising an amorphous chalcogen compound and/or an amorphous oxide including three or more atoms selected from the group consisting of Groups 1, 2, 13, 14, and 15 of the Periodic Table, and the said non-aqueous-electrolyte contains at least one N-containing organic compound. This non-aqueous electrolyte secondary battery has excellent charge and discharge characteristics, and its decrease of discharge capacity due to repeated charging/discharging is small.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: June 2, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Matsufuji, Hiroshi Ishizuka, Masayuki Negoro
  • Patent number: 5707756
    Abstract: The present invention provides a non-aqueous secondary battery having an improved charge and discharge cycle property and high discharge voltage, high energy density, high capacity and increased stability as well as an excellent high electric current atitude by using a lithium-containing transition metal oxide as a positive electrode material and at least one of the specfified composite oxides as a negative electrode material. Accordingly, the feature of the present invention consists in that the negative electrode material mainly consists of at least one member selected from the group consisting of amorphous chalcogen compounds and amorphous oxides containing at least three atoms selected from the group consisting of Group 13, 14, 15 and 2 atoms of Periodic Table.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: January 13, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Noriyuki Inoue, Yukio Maekawa, Tsutomu Miyasaka, Yoshikatsu Kagawa, Akihiro Matsufuji, Hideki Naito, Kensuke Goda, Osamu Takahashi, Toshiharu Nagamachi, Chuzo Kobayashi, Shoichiro Yasunami
  • Patent number: 5326618
    Abstract: A magnetic recording medium is described comprising a nonmagnetic support having formed thereon a magnetic layer containing a ferromagnetic powder, an abrasive, and a binder, wherein the ferromagnetic powder is a metal magnetic powder having a crystallite size of not larger than 200 .ANG., the abrasive comprises (i) an inorganic powder having a Mohs' hardness of more than 9 and a mean particle size of 0.1 to 0.9 .mu.m which is contained in an amount of from 0.1 to 10 parts by weight per 100 parts by weight of the ferromagnetic powder, and a center-line average surface roughness (Ra) of the magnetic layer is less than 5 nm. The magnetic recording medium exhibits improved properties in C/N, running durability and drop-out. A process of producing the recording medium is also disclosed involving a calender treatment with at least one pair of metal rolls.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: July 5, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Katsumi Ryoke, Yutaka Kakuishi, Toshiyuki Kitahara, Akihiro Matsufuji
  • Patent number: 5318838
    Abstract: A magnetic recording medium comprising a non magnetic support having thereon a magnetic layer comprising binder resins, ferromagnetic particles and an organic phosporus compound.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: June 7, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akihiro Matsufuji, Kiyomi Ejiri, Mikihiko Kato, Takao Ohya
  • Patent number: 5244736
    Abstract: A magnetic recording medium comprising a non-magnetic support having thereon a multi-layer magnetic layer structure comprising ferromagnetic fine powder and a binder, wherein said multi-layer magnetic layer structure is formed by coating a first composition containing the ferromagnetic fine powder and a polyisocyanate compound on the non-magnetic support to form a first magnetic layer and coating a second composition containing ferromagnetic fine powder and an epoxy compound having at least one epoxy group or a coupling agent on said first magnetic layer to form a second magnetic layer, wherein coating of said second magnetic layer is conducted simultaneously with or after coating said first magnetic layer while said first magnetic layer is still in a wet state, by a simultaneous or successive multiple layered coating method.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: September 14, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Hashimoto, Hideomi Watanabe, Akira Ushimaru, Kazuko Hanai, Akihiro Matsufuji
  • Patent number: 5153063
    Abstract: A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic fine powder uniformly dispersed in a binder, wherein the binder comprises at least one resin selected from the group consisting of a vinyl chloride resin and a urethane resin, said resin for the binder has a weight average molecular weight of about from 20,000 to 80,000 and contains a low molecular weight fraction having a weight average molecular weight of about 3,000 or less in an amount of about 3 wt. % or less based on the amount of the resin.
    Type: Grant
    Filed: August 28, 1991
    Date of Patent: October 6, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsutomu Okita, Kazuko Hanai, Akihiro Matsufuji, Nobuo Aoki
  • Patent number: 5126202
    Abstract: A magnetic recording medium comprising a nonmagnetic support having provided thereon a magnetic layer comprising a ferromagnetic powder dispersed in a binder, wherein said ferromagnetic powder has a specific surface area of 40 m.sup.2 /g or more as measured by the BET method; said magnetic layer further comprises carbon black having an average particle diameter of from about 20 to 120 m.mu.; and said binder comprises the combination of (1) a vinyl chloride resin containing a phosphate ester group represented by ##STR1## wherein M.sub.1 and M.sub.2, which may be the same or different, each represents Na, K, Li, H, N.sym.R.sub.3, or N.sym.HR.sub.2 wherein R represents an alkyl group or a hydrogen atom, and (2) at least one resin other than said vinyl chloride resin containing at least one of --SO.sub.3 M, --OSO.sub.2 M, --COOM, and ##STR2## wherein M, M.sub.1, and M.sub.2, which may be the same or different, each represents Na, K, Li, H, N.sup.4 .sym. R.sub.3, or N.sup..sym. HR.sub.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: June 30, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroo Inaba, Takeshi Kakuta, Koichi Yamauchi, Akihiro Matsufuji