Patents by Inventor Atsushi Matsunaga

Atsushi Matsunaga 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: 20040126720
    Abstract: The present invention relates to a silver halide color photographic light-sensitive material wherein at least one of light-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol % and/or a silver bromide content of 0.05 mol % to 4.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 1, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Atsushi Matsunaga, Tadashi Inaba, Shinichi Ichikawa
  • Patent number: 6727056
    Abstract: The present invention provides a tabular internal latent image type direct positive photographic silver halide emulsion which provides a high sensitivity and a low re-reversal negative sensitivity and a color diffusion transfer photographic light-sensitive material comprising such an emulsion. The present invention also provides an internal latent image type direct positive photographic silver halide emulsion which can be prepared with a good reproducibility and a color diffusion transfer photographic light-sensitive material less susceptible to variation of sensitivity and S/N ratio comprising such an emulsion. An internal latent image type direct positive photographic silver halide emulsion comprising tabular silver halide grains having an average grain diameter of not less than 0.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: April 27, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Munehisa Fujita, Atsushi Matsunaga
  • 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
  • Publication number: 20040033451
    Abstract: The present invention provides a tabular internal latent image type direct positive photographic silver halide emulsion which provides a high sensitivity and a low re-reversal negative sensitivity and a color diffusion transfer photographic light-sensitive material comprising such an emulsion. The present invention also provides an internal latent image type direct positive photographic silver halide emulsion which can be prepared with a good reproducibility and a color diffusion transfer photographic light-sensitive material less susceptible to variation of sensitivity and S/N ratio comprising such an emulsion. An internal latent image type direct positive photographic silver halide emulsion comprising tabular silver halide grains having an average grain diameter of not less than 0.
    Type: Application
    Filed: August 21, 1997
    Publication date: February 19, 2004
    Inventors: MUNEHISA FUJITA, ATSUSHI MATSUNAGA
  • Patent number: 6689555
    Abstract: The present invention relates to a silver halide color photographic light-sensitive material wherein at least one of light-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol % and/or a silver bromide content of 0.05 mol % to 4.00 mol % and further at least one compound represented by the following formula (I): X—(L)n—Y  Formula (I) wherein X represents a group adsorptive to a silver halide, L represents a divalent connecting group comprising one of an atom and an atomic group including at least one of a carbon atom, a nitrogen atom, a sulfur atom and an oxygen atom, Y denotes a reducible group and n denotes an integer of 0 or 1.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: February 10, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsushi Matsunaga, Tadashi Inaba, Shinichi Ichikawa
  • Publication number: 20040002026
    Abstract: A silver halide emulsion having a silver chloride content of 90 mol % or more which has been chemically sensitized with a compound capable of releasing an AuICh− ion is described, wherein grains of the silver halide contain in the shell portion thereof 0.01 to 0.50 mol % of silver iodide per mol of the total silver, with Ch representing S, Se or Te.
    Type: Application
    Filed: March 25, 2003
    Publication date: January 1, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hirotomo Sasaki, Hiroyuki Suzuki, Tomoki Tasaka, Masafumi Mizuno, Hiroyuki Mifune, Atsushi Matsunaga
  • 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
  • Patent number: 6607996
    Abstract: A biodegradable filament nonwoven fabric is provided which is composed of filaments of a polylactic acid based polymer. The polylactic acid based polymer is selected from the group consisting of poly-D-lactic acid, poly-L-lactic acid, copolymers of D-lactic acid and L-lactic acid, copolymers of D-lactic acid and a hydroxycarboxylic acid, copolymers of L-lactic acid and a hydroxycarboxylic acid, and copolymers of D-lactic acid, L-lactic acid and a hydroxycarboxylic acid, which have melting points of not lower than 100° C., and blends of any of these polymers which have melting points of not lower than 100° C. The filaments of the polylactic acid based polymer have a birefringence of 10×10−3 to 25×10−3, a degree of crystallinity of 12 to 30 wt %, and a crystal size of not greater than 80 Å as measured axially of the filaments. The nonwoven fabric has a boiling water shrinkage percentage of not higher than 15%.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: August 19, 2003
    Assignees: Tomoegawa Paper Co., Ltd., Unitika, Ltd.
    Inventors: Mamiko Matsunaga, Atsushi Matsunaga, Koichi Nagaoka
  • Publication number: 20030152743
    Abstract: Base cloth for tufted carpet and tufted carpet using the same. The base cloth is constituted by nonwoven fabric made of filament formed of poly lactic acid based polymer. The filament has round cross-section and birefringence of 12×10−3 to 30×10−3 and crystallization degree of 15 to 25 percent by weight. The nonwoven fabric made of filament has heat shrinkage of 1 percent or less at 120° C. in 3 minutes both in a machine direction (MD) and a cross direction thereto (CD). If the cross-section of the filament is not round, the filament has crystallization degree of 15 to 25 percent by weight and heat shrinkage of 1 percent or less at 120° C. in 3 minutes both in MD and CD.
    Type: Application
    Filed: February 19, 2003
    Publication date: August 14, 2003
    Inventors: Atsushi Matsunaga, Tomoko Watanabe, Mamiko Matsunaga, Yukitoku Watanabe
  • Publication number: 20030148688
    Abstract: A biodegradable filament nonwoven fabric is provided which is composed of filaments of a polylactic acid based polymer. The polylactic acid based polymer is selected from the group consisting of poly-D-lactic acid, poly-L-lactic acid, copolymers of D-lactic acid and L-lactic acid, copolymers of D-lactic acid and a hydroxycarboxylic acid, copolymers of L-lactic acid and a hydroxycarboxylic acid, and copolymers of D-lactic acid, L-lactic acid and a hydroxycarboxylic acid, which have melting points of not lower than 100° C., and blends of any of these polymers which have melting points of not lower than 100° C. The filaments of the polylactic acid based polymer have a birefringence of 10×10−3 to 25×10−3, a degree of crystallinity of 12 to 30 wt %, and a crystal size of not greater than 80 Å as measured axially of the filaments. The nonwoven fabric has a boiling water shrinkage percentage of not higher than 15%.
    Type: Application
    Filed: July 9, 1999
    Publication date: August 7, 2003
    Inventors: MAMIKO MATSUNAGA, ATSUSHI MATSUNAGA, KOICHI NAGAOKA
  • Publication number: 20030139110
    Abstract: A staple fiber non-woven fabric is provided which comprises, as constituent fibers, first and second split staple fibers composed of first and second fiber formable polymers, respectively, and water-absorptive staple fibers. The first and second split staple fibers have a fineness of not greater than 0.5 denier per fiber. The first and second fiber formable polymers are different polymers selected from the group consisting of a polyamide, a polyester and a polyethylene which are incompatible with each other. The fiber split degree of the first and second split staple fibers is not lower than 85%. The constituent fibers are three-dimensionally entangled with each other.
    Type: Application
    Filed: February 24, 2003
    Publication date: July 24, 2003
    Inventors: Kouichi Nagaoka, Atsushi Matsunaga, Noriko Yoshida
  • Publication number: 20020177084
    Abstract: The present invention relates to a silver halide color photographic light-sensitive material wherein at least one of light-sensitive silver halide emulsion layers includes a silver halide emulsion having a silver chloride content of at least 95 mol % and a silver iodide content of 0.05 mol % to 0.75 mol % and/or a silver bromide content of 0.05 mol % to 4.
    Type: Application
    Filed: February 26, 2002
    Publication date: November 28, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Atsushi Matsunaga, Tadashi Inaba, Shinichi Ichikawa
  • Patent number: 6346372
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising a support having thereon at least one silver halide emulsion layer, which contains at least one compound represented by formula (1) or (A-1).
    Type: Grant
    Filed: July 6, 2000
    Date of Patent: February 12, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masaru Yoshikawa, Hirotomo Sasaki, Atsushi Matsunaga
  • Publication number: 20020006502
    Abstract: A staple fiber non-woven fabric is provided which comprises, as constituent fibers, first and second split staple fibers composed of first and second fiber formable polymers, respectively, and water-absorptive staple fibers. The first and second split staple fibers have a fineness of not greater than 0.5 denier per fiber. The first and second fiber formable polymers are different polymers selected from the group consisting of a polyamide, a polyester and a polyethylene which are incompatible with each other. The fiber split degree of the first and second split staple fibers is not lower than 85%. The constituent fibers are three-dimensionally entangled with each other.
    Type: Application
    Filed: January 25, 1999
    Publication date: January 17, 2002
    Inventors: KOUICHI NAGAOKA, ATSUSHI MATSUNAGA, NORIKO YOSHIDA
  • Patent number: 6202426
    Abstract: An air conditioner comprising a body of the air conditioner; an LED for displaying a running condition and so on of the air conditioner by a light, the LED is provided in an inside of the body; a front casing provided on a front side of the body; a flexible display component having a recess, the display component aesthetically formed diffuses the light from the LED; and a front panel with an intake grille having an opening portion for receiving and engaging both ends of the display component and a protrusion engaged with the recess of the display component, the front panel with the intake grille is attached to the front casing so as to be opened and closed, wherein the both ends of the display components are inserted in the opening portion of the front panel with the intake grille by curving the display component in order to fix the display component to the front panel with the intake grille.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: March 20, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Atsushi Matsunaga, Toshihiro Hotta, Hironobu Tazawa
  • Patent number: 6194134
    Abstract: An internal latent image-type direct positive silver halide photographic emulsion is disclosed, comprising a silver halide grain prepared to have a composite structure such that the iodide content of the silver halide in the silver halide phase formed on the surface of a silver halide grain is higher than the iodide content of the silver halide in the phase on the inner side, wherein the average iodide content of all grains is less than 1.0 mol % and the amount of iodide supplied for the silver halide phase formed on the surface of the grain is from 0.005 mol % to less than 0.3 mol % based on all grains. Also disclosed is a color diffusion transfer light-sensitive material using the emulsion.
    Type: Grant
    Filed: September 27, 1999
    Date of Patent: February 27, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsushi Matsunaga, Takefumi Hara
  • Patent number: 5223389
    Abstract: Disclosed is a silver halide emulsion, which comprises at least one methine dye represented by the general formula (I): ##STR1## wherein MET represents an atomic group having a methine dye structure; Q represents a divalent linking group containing at least one carbon, nitrogen, sulfur or oxygen atom; l.sub.1 represents an integer 1 or 2; l.sub.2 represents an integer 0 or 1, l.sub.3 represents an integer from 1 to 4; and Ar represents an aromatic polycyclic group formed of 8 or more atoms containing at least one nitrogen atom, with the proviso that said nitrogen atom is in a form such that tautomerism does not produce ##STR2## A silver halide photographic material is also disclosed which comprises on a support a silver halide photographic emulsion layer comprising silver halide grains containing iron ions and having a localized phase with a high iron ion concentration and at least one methine dye represented by general formula (I') and which exhibits a blue sensitivity difference of 0.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: June 29, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Atsushi Matsunaga, Takanori Hioki
  • Patent number: 4542246
    Abstract: An electrical insulating oil, comprising:a base oil selected from the group consisting of a mineral oil, an alkylbenzene, and a mixture of a mineral oil and an alkylbenzene;a non-basic nitrogen content in an amount of 16 ppm or more; anda basic nitrogen content in an amount of 6% or less based on the weight of the non-basic nitrogen content.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: September 17, 1985
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Atsushi Matsunaga, Sampo Kusayanagi, Masamitu Takano, Yutaka Kato