Patents by Inventor Satoshi Kawakatsu
Satoshi Kawakatsu 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).
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Publication number: 20050084453Abstract: A radiographic contrast medium is disclosed, comprising a liposome which is comprised of vesicles including a water- and soluble nonionic iodine compound, and the contrast medium containing substantially no chlorinated solvent. There is also disclosed a method of preparing the radiographic contrast medium using supercritical or subcritical carbon dioxide.Type: ApplicationFiled: April 13, 2004Publication date: April 21, 2005Applicant: Konica Minolta Medical & Graphic, Inc.Inventors: Eiichi Ueda, Satoshi Kawakatsu, Akihisa Nakajima, Chiaki Nagaike
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Patent number: 5087421Abstract: Disclosed is a multilayered assay element in which the influence by the bilirubin contained in the sample fluid is substantially eliminated. The assay element of the present invention contains a bilirubin-trapping agent of the formula(A).sub.x (B).sub.y (C).sub.z [I](wherein A represents a monomer unit having a copolymerizable unsaturated double bond and a quaternary ammonium salt, B represents a monomer unit having a copolymerizable unsaturated double bond, C represents a monomer unit having at least two copolymerizable unsaturated double bonds and x, y and z represents the number mol % of 100-10, 90-0 and 10-0, respectively) which bilirubin-trapping agent is incorporated in a region which is upper than the reagent layer.Type: GrantFiled: May 19, 1989Date of Patent: February 11, 1992Assignee: Konica CorporationInventors: Mikio Koyama, Satoshi Kawakatsu, Tomoji Akashi, Kenichiro Okaniwa
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Patent number: 5032497Abstract: A silver halide photo-sensitive material having at least one silver halide emulsion layer on a support, characterized by that said silver halide emulsion layer contains at least one magenta-forming coupler of 1H-pyrazolo[ 3,2-c]-s-triazole type which is substituted by a tertiary alkyl group at the 3-position and, by another releasable group than a hydrogen atom at the 7-position.Type: GrantFiled: March 10, 1989Date of Patent: July 16, 1991Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
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Patent number: 4966856Abstract: An analytical element and method using the element for measuring a specific component in a fluid sample such as blood, serum, plasma, urine, sweat etc. The fluid sample is applied on the element with a labeled-material formed by binding the specific component or the analogue of it with a labeling material causing a signal. The element comprises a reaction layer and an absorption layer. The reaction layer contains a material which is capable of specifically binding with the component to be measured and the absorption layer contains a material which capable of binding with the labeled material and decreasing a signal caused by the labeling material. A strength of the signal caused labeled-material in the reaction layer is determined to measure the specific component.Type: GrantFiled: October 15, 1987Date of Patent: October 30, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tsukasa Ito, Satoshi Kawakatsu, Akira Onishi, Masayo Takekoshi
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Patent number: 4921791Abstract: A method for measuring a specific component, which comprises having a complex conjugate comprising a specific component to be measured and a labelled body having peroxidase as the label carried on a support, and forming and depositing a dye on said complex conjugate through the enzyme reaction of peroxidase by use of the three of hydrogen peroxide, an aromatic primary amine compound and either one of an active methylene compound or a phenol compound.Type: GrantFiled: June 25, 1987Date of Patent: May 1, 1990Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masahiko Yamasaki, Satoshi Kawakatsu
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Patent number: 4868106Abstract: Disclosed are an analytical element for determining a specific component A in a test sample, based on the specific reaction between said specific component A and a substance B capable of binding specifically to said specific component A, by the use of a labelled material L comprising a label capable of providing a signal and said specific component A or comprising a label capable of providing a signal and a substance C capable of binding specifically to said specific component A, characterized in that said element has a porous reaction layer formed by the use of a mixture containing (a) a carrier having said substance B immobilized thereon and (b) a carrier having an absorbing substance D capable of binding specifically to said labelled material L which has not bound to said substance B or to said specific compound A, to thereby modulate said signal, and an analytical method employing the same.Type: GrantFiled: October 16, 1986Date of Patent: September 19, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Tsukasa Ito, Satoshi Kawakatsu, Akira Onishi, Masayo Ishikawa
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Patent number: 4840886Abstract: A silver halide color photographic material having at least one silver halide emulsion layer on a support is disclosed. Said silver halide emulsion layer contains at least one of the 1H-pyrazolo [3,2-c]-S-triazole derived magenta couplers that have a substituent of the following formula at 3-position:--R.sub.1 --S(O).sub.n --R.sub.2whereinR.sub.1 is an alkylene group;R.sub.2 is an alkyl, cycloalkyl or aryl group; andn is 1 or 2.Type: GrantFiled: February 26, 1988Date of Patent: June 20, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Kenji Kumashiro, Hiroshi Kashiwagi, Koichi Hatta, Yuji Hotta, Hiroko Ohya, Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
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Patent number: 4695533Abstract: This invention relates to a silver halide photographic light-sensitive material in which at least one of the silver halide emulsion layers thereof contains an 1H-pyrazolo[3,2-C]-s-triazole magenta coupler substituted in the third position by a group represented by the following Formula [I];--R.sub.1 --SO.sub.2 --R.sub.2 Formula [I]wherein R.sub.1 represents an alkylene group having not less than 3 carbon atoms in the straight-chained portion thereof, which is capable of linking a --SO.sub.2 --R.sub.2 to the carbon atom in the third position of the nucleus of the 1H-pyrazolo[3,2-C]-s-triazole; and R.sub.2 represents an aryl group.The silver halide photographic light-sensitive materials of the invention are excellent in light-resistance of magenta dye images and also spectral absorption characteristics.Type: GrantFiled: May 28, 1986Date of Patent: September 22, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Toshijumi Iijima, Kenji Kumashiro, Hiroshi Kashiwagi, Koichi Hatta, Takashi Uchida, Hajime Wada, Fumio Ishii, Satoshi Matsunaga, Yasuko Matsubara, Kaoru Shinozaki
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Patent number: 4675280Abstract: A silver halide color photographic material that has at least one silver halide emulsion layer on a support is disclosed. Said silver halide emulsion layer contains at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a primary alkyl group; and X is a halogen atom.Type: GrantFiled: October 8, 1985Date of Patent: June 23, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yutaka Kaneko, Kenji Kadokura, Toshihiko Kimura, Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
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Patent number: 4665015Abstract: A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler having the following formula: ##STR1## wherein R.sub.1 is a tertiary alkyl group; R.sub.2 is a secondary or tertiary alkyl group; X is a leaving group other than a hydrogen atom that leaves upon reaction with the oxidation product of a color developing agent.Type: GrantFiled: September 13, 1985Date of Patent: May 12, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toshifumi Iijima, Kenji Kumashiro, Hiroshi Kashiwagi, Koichi Hatta, Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
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Patent number: 4607002Abstract: A silver halide color photographic light-sensitive material comprising a reflective support bearing thereon a green light-sensitive silver halide emulsion layer containing a t-alkyl 1H-pyrazolo[3,2-C]-5-triazole magenta forming coupler represented by Formula (I) defined in the specification: a blue light-sensitive silver halide emulsion layer containing a t-butyl acylacetamide yellow-forming coupler represented by Formula (II) defined in the specification and a red light-sensitive silver halide emulsion layer containing a phenolic cyan-forming coupler represented by Formula (III) or (IV) defined in the specification.Type: GrantFiled: November 14, 1985Date of Patent: August 19, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
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Patent number: 4600688Abstract: A silver halide color photographic light-sensitive material whose magenta dye-forming layer forms a magenta dye image having an absorption maximum from 550 nm to 560 nm and an advantageous absorption spectrum for color reproduction is provided by a silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, wherein the at least one silver halide emulsion layer contains a 1H-pyrazolo[3,2-C]-s-triazole-type magenta coupler, and the above silver halide emulsion layer containing the magenta coupler and/or a silver halide emulsion layer having substantially the same color sensitivity as does the above silver halide emulsion layer containing the magenta coupler contains a pyrazolone-type magenta coupler.Type: GrantFiled: February 8, 1985Date of Patent: July 15, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Satoshi Kawakatsu, Noritaka Nakayama, Katsunori Katoh, Kaoru Shinozaki, Toshihiko Kimura
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Patent number: 4581326Abstract: A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of formula (I) and at least one non-color forming phenolic compound: ##STR1## wherein R.sub.1 is an alkyl or aryl group; R.sub.2 is a monovalent group; R.sub.3 is an alkylene group; Y is a halogen atom, a hydroxy or alkyl group; Z is a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; X is a divalent bonding group or an alkylene group having 1 to 5 carbon atoms; m is an integer of 0 to 4; and n is an integer of 0 to 5.Type: GrantFiled: September 6, 1984Date of Patent: April 8, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Katsunori Katoh, Satoshi Kawakatsu, Kosaku Masuda, Kaoru Miyagi, Noritaka Nakayama, Toshihiko Kimura
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Patent number: 4562146Abstract: A silver halide color photographic material is disclosed. The material contains a photographic magenta coupler of formula (I) and a phenolic compound of formula (II) within a silver halide emulsion layer: ##STR1## (wherein R.sub.1 and R.sub.2 are each an alkyl group or an aryl group; Z is a hydrogen atom or a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent); ##STR2## (wherein R.sub.3 is an alkyl group, an alkoxy group, an aryl group or an amino group; R.sub.4 is an alkyl group, an alkoxy group or a halogen atom; s is an integer of 0 to 2, provided that when s is 2, R.sub.4 may be the same or different).Type: GrantFiled: November 16, 1984Date of Patent: December 31, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Kosaku Masuda, Kaoru Miyagi, Katsunori Katoh, Noritaka Nakayama, Toshihiko Kimura, Satoshi Kawakatsu
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Patent number: 4548899Abstract: A silver halide color photographic material is disclosed which has at least one silver halide emulsion layer on a support, said silver halide emulsion layer containing at least one magenta coupler of the following formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.4 are each a hydrogen atom, an alkyl group or an aryl group; R.sub.2 and R.sub.6 are each a monovalent group; R.sub.3 is an alkyl group, an aryl group or a heterocyclic group; R.sub.5 is an alkyl group or an aryl group; R.sub.7 is an alkylene group, an arylene group or a bivalent organic group having at least one alkylene bonded to at least one arylene; R.sub.8 is an alkyl group, an alkenyl group, an aryl group or a heterocyclic group; X is a single bond or an alkylene group having 1 to 5 carbon atoms; Z is a hydrogen atom or a group that can be eliminated upon coupling reaction with the oxidized product of a color developing agent; and m is an integer of 0 to 4.Type: GrantFiled: November 1, 1984Date of Patent: October 22, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Noritaka Nakayama, Satoshi Kawakatsu, Katsunori Katoh, Kaoru Shinozaki
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Patent number: 4451558Abstract: A silver halide color photographic light-sensitive material containing a phenol cyan coupler having an ureido group in the 2-position dispersed in a phthalic ester.Type: GrantFiled: June 2, 1983Date of Patent: May 29, 1984Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Hiroshi Sugita, Satoshi Kawakatsu, Yutaka Kaneko
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Patent number: 4324856Abstract: A photographic silver halide material is disclosed which contains a precursor of photographic chemicals.Type: GrantFiled: October 7, 1980Date of Patent: April 13, 1982Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Satoshi Kawakatsu, Shigeto Hirabayashi, Hidetaka Ninomiya, Yutaka Kaneko
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Patent number: 4297437Abstract: A method for processing an exposed color photographic material containing a color developing agent or precursor by developing with a color developer which is replenished.Type: GrantFiled: November 24, 1980Date of Patent: October 27, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yutaka Kaneko, Shigeto Hirabayashi, Satoshi Kawakatsu, Hidetaka Ninomiya
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Patent number: 4297441Abstract: This invention relates to photographic materials containing an ion pair compound which has a quaternary nitrogen atom as a cation and a boron compound as an anion.Type: GrantFiled: June 26, 1980Date of Patent: October 27, 1981Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Yutaka Kaneko, Satoshi Kawakatsu, Shigeto Hirabayashi, Hidetaka Ninomiya
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Patent number: 4078936Abstract: The two-equivalent yellow coupler having the following formula has an extremely high reactivity, produces an image of high density in color development and causes little fogging and no ground coloration: ##STR1## wherein Coupl, R.sub.1 - R.sub.5 and A are as defined hereinafter.Type: GrantFiled: May 12, 1976Date of Patent: March 14, 1978Assignee: Mitsubishi Paper Mills, Ltd.Inventors: Kosaku Masuda, Mamoru Nakatani, Kiyoshi Yamashita, Yasushi Usagawa, Satoshi Kawakatsu