Patents by Inventor Tetsuo Nakamura

Tetsuo Nakamura 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: 20020168599
    Abstract: A silver halide photographic material is disclosed, comprising at least one silver halide emulsion layer provided on a support, the emulsion layer comprising a silver halide emulsion containing at least two sensitizing dyes represented by the following general formula (I): 1
    Type: Application
    Filed: January 30, 2002
    Publication date: November 14, 2002
    Inventors: Tetsuo Nakamura, Kimiyasu Morimura, Takanori Hioki
  • Patent number: 6458524
    Abstract: A silver halide photographic light-sensitive material is described, comprising at least one compound represented by the following formula (I): wherein Z1 and Z2 each represents oxygen atom, sulfur atom, selenium atom, tellurium atom or a >NR group, R represents an alkyl group, an aryl group or a heterocyclic group, L1, L2 and L3 each represents a methine group, n1 represents 0 1, 2 or 3, V1, V2, V3, V4, W1, W2, W3 and W4 each represents hydrogen atom or a substituent, provided that two substituents may be combined with each other to form a condensed ring on the condition that assuming the sum total of &pgr; values of the substituents V1 to V4 is &pgr;v and the sum total of &pgr; values of the substituents W1 to W4 is &pgr;w, either one of &pgr;v and &pgr;w is 0.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: October 1, 2002
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Kimiyasu Morimura
  • Publication number: 20020110764
    Abstract: The present invention provides a silver halide photographic material that is excellent in photographic speed as well as image graininess and exhibits low residual color even after rapid processing. The silver halide photographic material contains a compound represented by formula (I) and a compound represented by formula (II), as defined.
    Type: Application
    Filed: March 26, 2001
    Publication date: August 15, 2002
    Inventors: Katsuhisa Ohzeki, Tetsuo Nakamura, Takanori Hioki
  • Publication number: 20020072019
    Abstract: A silver halide photographic light-sensitive material is disclosed, comprising at least one silver halide emulsion layer, wherein the silver halide grain contained in said emulsion layer is silver chloroiodide or silver chloroiodobromide having a silver chloride content of 90 mol % or more and a silver iodide content of 0.01 to 1.
    Type: Application
    Filed: September 25, 2001
    Publication date: June 13, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Katsuhisa Ohzeki, Tetsuo Nakamura
  • Publication number: 20020058216
    Abstract: Disclosed is a silver halide photographic material which comprises at least one methine dye represented by the following formula (I): 1
    Type: Application
    Filed: August 17, 2001
    Publication date: May 16, 2002
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Tetsuo Nakamura, Takanori Hioki, Katsuhisa Ohzeki, Naoyuki Hanaki
  • 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: 20020012891
    Abstract: A silver halide photographic emulsion which contains at least two sensitizing dyes represented by the following formula (I):
    Type: Application
    Filed: May 1, 2001
    Publication date: January 31, 2002
    Inventors: Tetsuo Nakamura, Takanori Hioki
  • Patent number: 6197968
    Abstract: Described is a decolorizable dye represented by the following formula (I): wherein R1 represents an alkyl, aryl or heterocyclic group; R2 and R3 independently each represents a hydrogen atom or has the same meaning as R1 or may be coupled together to form a ring; L1 and L2 independently each represents a methine group or a nitrogen atom; L3 and L4 independently each represents a methine group; Z represents an atomic group necessary for the formation of a 5- or 6-membered hetero ring; m stands for 0 or 1; Y represents an oxygen, sulfur, selenium or tellurium atom; A represents a hydrogen atom or a group eliminative by solution treatment; V stands for a monovalent group; p stands for 0, 1, 2 or 3, X represents a counterion, and n stands for a numeral of 0 or greater necessary for the neutralization of an electron charge in the molecule.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: March 6, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Yoshio Inagaki
  • Patent number: 6150082
    Abstract: A silver halide photographic material is disclosed which contains at least one compound represented by the following formula (I) and at least one dye having the absorption maximum in a methanol solution at from 510 to 535 nm: ##STR1## wherein R.sup.1 and R.sup.2 each represents an alkyl group; Y represents an aryl group or a heterocyclic group; V.sup.1, V.sup.2, V.sup.3 and V.sup.4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, a hydroxyl group, an alkylthio group, a mercapto group, a cyano group, an acyl group, a carboxyl group, or an alkoxycarbonyl group; X.sup.1 represents a counter ion; and m.sup.1 represents a number of 0 or more necessary for neutralizing a charge in the molecule.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: November 21, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Ryuji Abe, Takanori Hioki
  • Patent number: 6103485
    Abstract: Novel nucleic acids, proteins, peptides, antigens, and antibodies related to non-A, non-B hepatitis, and non-A, non-B hepatitis diagnostic reagents using those materials.
    Type: Grant
    Filed: May 20, 1998
    Date of Patent: August 15, 2000
    Assignee: Immuno Japan Inc.
    Inventors: Shunji Mishiro, Tetsuo Nakamura
  • Patent number: 6090537
    Abstract: A silver halide photographic material is described which contains at least one compound represented by the following formula (I) and at least one compound represented by the following formula (II): ##STR1## wherein R.sup.1 and R.sup.2 each represents an alkyl group; W represents a hydrogen atom, a methyl group or an ethyl group; V.sup.1, V.sup.2, V.sup.3 and V.sup.4 each represents a hydrogen atom, a fluorine atom, a chlorine atom, an alkoxyl group, a hydroxyl group or a carboxyl group; X.sup.1 represents a counter ion; and m represents a number of 0 or more necessary for neutralizing a charge in the molecule; ##STR2## wherein R.sup.3 and R.sup.4 each represents an alkyl group, and at least one of R.sup.3 and R.sup.4 represents a carboxyalkyl group or an alkanesulfonylcarbamoylalkyl group; Z represents a hydrogen atom, a methyl group or an ethyl group; Y represents an aryl group or a heterocyclic group; V.sup.5 and V.sup.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: July 18, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Ryuji Abe
  • Patent number: 6057089
    Abstract: A silver halide photographic light-sensitive material having at least one silver halide emulsion layer formed on a support, wherein silver halide grains in the emulsion layer are reduction-sensitized and contain at least one compound represented by formula (I) below. ##STR1## In formula (I), R is an alkyl group represented as follows. ##STR2## Each of R.sub.a, R.sub.b, R.sub.c, ad R.sub.d represents an alkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, or an amino group, each of Q.sub.a, Q.sub.b, Q.sub.c, and Q.sub.d represents a methylene group, and each of r, s, t, and u represents an integer from 1 to 10.Each of L.sub.1 and L.sub.2 represents a methine group. p1 represents 0 or 1. Z.sub.1 represents atom groups required to neutralize a 5- or 6-membered nitrogen-containing heterocyclic ring. M.sub.1 represents a charge-balancing counterion, and m.sub.1 represents a number from 0 to 10 required to form electric charge of a molecule.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: May 2, 2000
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Jun Matsumoto, Takanori Hioki, Tetsuo Nakamura
  • Patent number: 6034161
    Abstract: A cold-setting aqueous emulsion paint comprising a pigment and an aqueous emulsion resin consisting essentially of a copolymer of (a) a polymerizable monomer of the formula (I): ##STR1## wherein R is a hydrogen atom or a methyl group, and n is 1 or 2, (b) a polymerizable monomer having a carboxyl group and an ethylenic double bond, and (c) a polymerizable monomer having an ethylenic double bond copolymerizable with the above polymerizable monomers (a) and (b).
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: March 7, 2000
    Assignee: Dai Nippon Toryo Co., Ltd.
    Inventors: Tetsuo Nakamura, Hiroharu Sasaki, Kazuyoshi Tsuneta, Sadakazu Hokamura
  • Patent number: 5972905
    Abstract: A pharmaceutical agent for improvement in pruritus cutaneus associated with renal failure and/or for the treatment of renal failure and/or its complications containing as an effective ingredient oligosaccharide or oligosaccharides such as, but not limited to fructo-oligosaccharide, galacto-oligosaccharide, isomalto-oligosaccharide, malto-oligosaccharide, lacto-sucrose and/or xylo-oligosaccharide, in particular, lactulose, rhamnose and lactitol.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: October 26, 1999
    Assignee: Institute of Immunology Co., Ltd.
    Inventors: Tomoyoshi Hosokawa, Kunio Ando, Tatsuro Shimaoka, Tetsuo Nakamura
  • Patent number: 5856458
    Abstract: The noncoding region, containing at least 324 nucleotides, of the 5' terminus of non-A, non-B hepatitis virus is disclosed. Also disclosed is the nucleotide sequence of the structural gene which is upstream of the noncoding region. Oligonucleotide primers derived from these regions can be used to to detect non-A, non-B hepatitis virus.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 5, 1999
    Assignee: Immuno Japan Inc.
    Inventors: Hiroaki Okamoto, Tetsuo Nakamura
  • Patent number: 5797465
    Abstract: At least one guide shaft is equipped on one or both sides of a plurality of drilling shafts arranged on a line; and a jet nozzle is equipped with said guide shaft. A multi-shaft drilling unit, equipped with preferably three auger shafts, is used to develop a continuous wall under the ground. In such a unit, a housing for maintaining a pitch between the auger shafts includes a housing comprising: a primary gear rotating around the central auger shaft; a pair of secondary gears engaging with the primary gear; a primary bevel gear integral to the primary gear; a secondary bevel gear engaging with said primary bevel gear and fixed to a rotary shaft which rotary shaft is perpendicular to a straight line connecting the center lines of auger shafts; and cutters fixed at both ends of the rotary shaft.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: August 25, 1998
    Assignee: Chemical Grouting Company, Ltd.
    Inventors: Mitsuhiro Shibasaki, Hiroaki Kubo, Akira Mori, Hachiro Hatakeda, Tsutao Takahashi, Tetsuo Nakamura
  • Patent number: 5766867
    Abstract: Novel nucleic acids, proteins, peptides, antigens, and antibodies related to non-A, non-B hepatitis, and non-A, non-B hepatitis diagnostic reagents using those materials.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: June 16, 1998
    Assignee: Immuno Japan Inc.
    Inventors: Shunji Mishiro, Tetsuo Nakamura
  • Patent number: 5753281
    Abstract: A method of preparing a synthetic butter flavor having enriched milk flavor and butter flavor, containing the steps of hydrolysing a milk fat with a lipolytic enzyme and then oxidizing the hydrolysate of the milk fat by ultraviolet irradiation. The hydrolysate of the milk fat is preferably oxidized by ultraviolet irradiation to have a POV of 1.5 to 9.0, in particular 4.0 to 7.5.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: May 19, 1998
    Assignee: Snow Brand Milk Products Co., Ltd.
    Inventors: Katsutoshi Tanno, Kenji Ganmyo, Nobuyuki Kawai, Tetsuo Nakamura
  • Patent number: 5692838
    Abstract: An aerostatic bearing comprises a bearing base having a plurality of first through-holes for air intake, a bearing clearance being formed between the bearing surface and the thrust shaft, and a self-controlled restrictor disposed so as to form a restricting spacing with the reverse surface of the bearing base, the self-controlled restrictor being adapted for automatically adjusting the flow rate of air supplied to the bearing surface corresponding to the variation of the pressure on the bearing surface. The self-controlled restrictor has a restricting disc and a circular leaf spring. The restricting disc has a second through-hole at the center. The restricting disc is held by an O ring that also functions as a fluid sealing. The second through-hole is adapted for supplying air to the restricting spacing. The circular leaf spring is integrally formed with the restricting disc of a bottomed cylindrical member. Air supplied from the second through-hole to the restricting spacing flows as a diverging flow.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: December 2, 1997
    Assignee: Mitutoyo Corporation
    Inventors: Shigeka Yoshimoto, Kenji Okamoto, Tetsuo Nakamura
  • Patent number: 5633390
    Abstract: The pyrazolone-pentamethine oxonol compound represented by the formula (Ib): ##STR1## in which A.sup.3 is methyl, ethyl or sulfoethyl; each of Q.sub.6 and Q.sub.7 independently is hydrogen, methyl, ethyl or sulfoethyl; M.sup.5 is sodium or potassium; and M.sup.6 is hydrogen, sodium or potassium.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: May 27, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tetsuo Nakamura, Shigeru Ohno, Kiyoshi Kawai