Patents by Inventor Naoto Matsuda

Naoto Matsuda 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: 20020051948
    Abstract: A silver halide color photographic lightsensitive material comprising at least one photosensitive silver halide emulsion layer on a support, wherein the emulsion layer contains a magenta coupler represented by formula (M-1) below: 1
    Type: Application
    Filed: August 8, 2001
    Publication date: May 2, 2002
    Inventors: Hisashi Mikoshiba, Yoshio Shimura, Naoto Matsuda, Hiroshi Fukuzawa
  • Patent number: 6379878
    Abstract: A silver halide color photosensitive material having at least one blue-sensitive emulsion layer, at least one green-sensitive emulsion layer, and at least one red-sensitive emulsion layer on a support, wherein the red-sensitive emulsion layer has the maximum value of sensitivity in a wavelength region of 580 nm to 650 nm, and the green-sensitive emulsion layer contains at least one magenta coupler represented by formula (MC-1) below: wherein the substituent are defined herein the specification.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: April 30, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Yoshio Shimura, Tetsuo Nakamura, Hisashi Mikoshiba
  • Publication number: 20020039709
    Abstract: A silver halide color photographic lightsensitive material comprises a support and a silver halide emulsion layer.
    Type: Application
    Filed: July 3, 2001
    Publication date: April 4, 2002
    Inventors: Hisashi Mikoshiba, Hiroshi Fukuzawa, Naoto Matsuda
  • Publication number: 20020037484
    Abstract: A silver halide color photographic light-sensitive material having at least one blue-sensitive emulsion layer, at least one green-sensitive emulsion layer, and at least one red-sensitive emulsion layer on a transparent support, wherein the transparent support is a plastic support having two surfaces undercoated with an undercoat solution containing at least one compound selected from the group consisting of a water-miscible organic solvent except for alcohols, a substituted phenol having a molecular weight of 200 or less, and a substituted acetic acid in which at least one hydrogen atom on a methyl group of acetic acid is substituted with a halogen atom, and at least one photosensitive emulsion layer contains a specific coupler.
    Type: Application
    Filed: June 5, 2001
    Publication date: March 28, 2002
    Inventors: Naoto Matsuda, Hisashi Mikoshiba
  • Publication number: 20020025497
    Abstract: A silver halide color photographic light-sensitive material has a red-, green-, and blue-sensitive emulsion layer in this order from the side closest to a support.
    Type: Application
    Filed: July 6, 2001
    Publication date: February 28, 2002
    Inventors: Naoto Matsuda, Hisashi Mikoshiba
  • Patent number: 6322959
    Abstract: A silver halide color photographic lightsensitive material comprises a support and, superimposed thereon, a yellow color-forming blue-sensitive emulsion layer, a magenta color-forming green-sensitive emulsion layer containing a magenta coupler represented by a general formula (MC-1): and a cyan color-forming red-sensitive emulsion layer containing a cyan coupler represented by a general formula (NC-1):
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: November 27, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Naoto Matsuda
  • Patent number: 6159671
    Abstract: A silver halide color photographic lightsensitive material comprises a support and, superimposed thereon, a yellow color-forming blue-sensitive emulsion layer, a magenta color-forming green-sensitive emulsion layer containing a magenta coupler represented by a general formula (MC-1): ##STR1## and a cyan color-forming red-sensitive emulsion layer containing a cyan coupler represented by a general formula (PC-1)or a general formula (NC-1): ##STR2##
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: December 12, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Naoto Matsuda
  • Patent number: 6127088
    Abstract: A heat developable color light-sensitive material containing at least light-sensitive silver halide, a binder, and a dye-providing compound on a support, wherein at least one of the compounds represented by formula (1) is contained as the above dye-providing compound, and the amount of the above binder is 5 g/m.sup.2 or less: ##STR1## wherein veriables in the above formula are defined in the specification. The heat developable color light-sensitive material which provides an excellent discrimination of an image and is less susceptible to an influence by a fluctuation in a development processing condition.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: October 3, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Yamada, Naoto Matsuda, Yasuhiro Ishiwata, Osamu Uchida, Michio Ono
  • Patent number: 5858635
    Abstract: A silver halide color photographic material is described, containing a 1H-pyrazolo?5,1-c!-1,2,4-triazole magenta coupler represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.4 each represent a substituent; R.sub.2 and R.sub.3 each represent a hydrogen atom, an alkyl group, an aryl group, a hydroxyl group or an alkyl group substituted with at least one hydroxyl group; R.sub.9 represents a hydrogen atom, an alkyl group, an aryl group, an acyl group or a sulfonyl group; L represents --SO.sub.2 --, --CO--, --SO.sub.2 NR.sub.10 --, --CONR.sub.10 -- or --COO--; R.sub.10 represents a hydrogen atom, an alkyl group or an aryl group; A.sub.1, A.sub.2, and A.sub.3 each represent --O--, --NR.sub.5 --, --NR.sub.5 CO--, --CONR.sub.5 --, --NR.sub.5 SO.sub.2 --, --SO.sub.2 NR.sub.5 --, --COO--, --OCO--, --NR.sub.5 CONR.sub.5 --, --OCONR.sub.5 -- or --NHCOO--; R.sub.5 represents a hydrogen atom, an alkyl group, an aryl group or an alkyl group substituted with at least one hydroxyl group; B.sub.1, B.sub.2, and B.sub.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: January 12, 1999
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Nakamine, Masuji Motoki, Toshio Kawagishi, Naoto Matsuda
  • Patent number: 5756274
    Abstract: A silver halide color photographic material is described, comprising a support having provided thereon at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least on red-sensitive silver halide emulsion layer, wherein at least one layer of the at least one red-sensitive silver halide emulsion layer contains at least one of the cyan couplers represented by formula (1), and at least one layer contains at least one compound selected from the compounds represented by the following formula (2) and the compounds which react with the oxidized product of an aromatic primary amine color developing agent but substantially do not form color images: ##STR1## wherein the variables are defined herein.
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: May 26, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Takayuki Ito, Naoki Saito
  • Patent number: 5660975
    Abstract: A silver halide color photographic material comprising at least one layer provided on a support, said layer containing a coupler represented by the following formula (1): ##STR1## wherein Z.sub.a represents --C(R.sub.3).dbd. or --N.dbd.; Z.sub.b represents --C(R.sub.3).dbd. when Z.sub.a is --N.dbd. or Z.sub.b represents --N.dbd. when Z.sub.a is --C(R.sub.3).dbd.; R.sub.1 and R.sub.2 each represents an electron attractive group having a Hammett substituent constant .sigma..sub.p of 0.2 to 1.0; R.sub.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: August 26, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takayuki Ito, Naoto Matsuda
  • Patent number: 5656418
    Abstract: A silver halide color photographic material is described, containing a 1H-pyrazolo[5,1-c]-1,2,4-triazole magenta coupler represented by formula (I) or (II): ##STR1## wherein all variables are defined in the specification, which photographic material exhibits satisfactory magenta color developability to form a dye image having a high density and excellent storage stability.
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Nakamine, Masuji Motoki, Toshio Kawagishi, Naoto Matsuda
  • Patent number: 5585231
    Abstract: A heat developable color light-sensitive material containing at least light-sensitive silver halide, a binder, and a dye-providing compound on a support, wherein at least one of the compounds represented by formula (1) is contained as the above dye-providing compound, and the amount of the above binder is 5 g/m.sup.2 or less: ##STR1## wherein variables in the above formula are defined in the specification. The heat developable color light-sensitive material which provides an excellent discrimination of an image and is less susceptible to an influence by a fluctuation in a development processing condition.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: December 17, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Yamada, Naoto Matsuda, Yasuhiro Ishiwata, Osamu Uchida, Michio Ono
  • Patent number: 5543279
    Abstract: A silver halide light-sensitive material containing a compound represented by formula (I): ##STR1## wherein variables in the above formula (I) are defined in the specification. The silver halide light-sensitive material has a small fluctuation in sensitivity even when the processing temperature changes and has an improved color reproduction and an excellent discrimination and can achieve low Dmin and high Dmax.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: August 6, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Makoto Yamada, Michio Ono, Yasuhiro Ishiwata, Osamu Uchida
  • Patent number: 5206131
    Abstract: A diffusion transfer-type silver halide color photographic photosensitive material comprising a support, having thereon at least a photosensitive thermally developable silver halide, a binder, a dye donating compound which is fast to diffusion and which forms or releases a diffusible dye, a development inhibitor releasing compound which releases a development inhibitor and a compound represented by formula (I)R.sup.1 --Y--O--H [I]wherein R.sup.1 represents an alkyl group, an aryl group, an alkylamino group, an arylamino group, an alkoxy group, an aryloxy group, a heterocyclic residual group or a polymer residual group of said groups, Y represents ##STR1## or --SO.sub.2 --NR.sup.2 -- and R.sup.2 represents a hydrogen atom, an alkyl group, an aryl group or an acyl group, and R.sup.1 and R.sup.2 may be joined together to form a five or eight membered ring is disclosed.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: April 27, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Takeshi Nakamine, Koki Nakamura, Hiroyuki Hirai
  • Patent number: 5202225
    Abstract: Disclosed is a silver halide photographic material comprising a support, having thereon at least one silver halide emulsion layer, wherein there is contained in the silver halide emulsion layer or other hydrophilic colloid layer a compound of which an oxidized form is produced in accordance with development of the silver halide and is capable of releasing a photographically useful group by means of a conjugated addition-elimination mechanism due to an intramolecular nucleophilic group attack.
    Type: Grant
    Filed: August 14, 1991
    Date of Patent: April 13, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Nakamine, Takayuki Ito, Naoto Matsuda, Koki Nakamura, Hiroyuki Hirai
  • Patent number: 5190852
    Abstract: Disclosed is a silver halide photographic material comprising a support having thereon at least one layer containing a compound represented by general formula (I): ##STR1## wherein EAG represents an electron-accepting group; A represents a group which undergoes a reaction triggered by the cleavage of the oxygen-nitrogen single bond in the general formula to release PUG; B represents a hydrogen atom or an alkyl group, an aralkyl group, an aryl group, a heterocylic group, an acyl group, a sulfonyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkoxysulfonyl group or an aryloxysulfonyl group which may contain substituents; the solid lines indicate a single bond; the broken lines indicate that either of these line is a bond, with the proviso that when the broken line between N and A represents a bond, B is not present; EAG and B, and A and B may be connected to each other to form a ring; EAG may be connected to a polymer residue to fix the compound of general f
    Type: Grant
    Filed: February 12, 1992
    Date of Patent: March 2, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naoto Matsuda, Michio Ono
  • Patent number: 5151357
    Abstract: A novel silver halide photographic material is described, comprising a compound represented by formula (I): ##STR1## wherein Q represents a nonmetallic atomic group required to be connected to carbon atom and nitrogen atom to form a monocyclic or condensed heterocyclic ring therewith; L represents a divalent group; n represents an integer of 0 to 2; M.sup.1 represents a hydrogen atom, ammonium ion or metallic ion; and R.sup.1 and R.sup.2 each represents a hydrogen atom, alkyl group, ammonium ion or metallic ion and may be the same or different or may be connected to each other to form a 5- or 6-membered ring. In a preferred embodiment, at least one of R.sup.2 and R.sup.1 represents a hydrogen atom, ammonium ion or metallic ion.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: September 29, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tomoyuki Koide, Naoto Matsuda, Koki Nakamura, Tetsuro Kojima