Patents by Inventor Masao Sasaki
Masao Sasaki 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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Patent number: 4992358Abstract: A color photographic light-sensitive material comprising a reflective support having thereon a plurality of silver halide emulsion layers of which the emulsion layer located farthest from said support has, on each of both the support side thereof and the uppermost side at least one nonlight-sensitive layer containing an effective amount of an ultraviolet absorbing agent, said ultraviolet absorbing agent being used in said nonlight-sensitive layer on the uppermost side of said emulsion layer being a 2-(2'-hydroxyphenyl)benzotriazole-type compound which is in the liquid form at normal room temperature.Type: GrantFiled: March 30, 1989Date of Patent: February 12, 1991Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4975360Abstract: A silver halide photographic light-sensitive material comprising a support provided thereon with photographic layers including at least one silver halide emulsion layer and at least one non-light-sensitive layer is disclosed. The silver halide emulsion layer comprises silver halide grains comprising not less than 80 mol % of silver chloride. At least one of the photographic layers contains an ultraviolet absorbing agent which is in the liquid state at ordinary temperature. And at least one of the photographic layers is hardened with a vinylsulfon hardner. The photographic material has a high developing rate and a high antipressure property, so it is suitable for a rapid processing.Type: GrantFiled: July 7, 1989Date of Patent: December 4, 1990Assignee: Konica CorporationInventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4795696Abstract: Disclosed is a light-sensitive silver halide photographic material, comprising a plural number of photographic constituent layers on a support, wherein at least one of the layers is a silver halide emulsion layer containing a magenta coupler represented by Formula (I) shown below, and at least one of the photographic constituent layers excluding at least the above silver halide emulsion layer contains at least one of the compounds represented by Formula (a) and Formula (b) shown below:Formula (I): ##STR1## Formula (a) ##STR2## Formula (b) ##STR3## The light-sensitive silver halide photographic material according to this invention have excellent color reproducibility, and is remarkably improved in both the fastness to light of magenta dye images and the resistance to the yellowing thereof to be generated by light (light stain).Type: GrantFiled: April 19, 1988Date of Patent: January 3, 1989Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4790959Abstract: A dispersion of oil globules which contains an ultra-violet absorber and a high-boiling solvent is disclosed. The UV absorber is a mixture of 15 to 45 wt % of a compound of formula (I) and 85 to 55 wt % of a compound of formula (II): ##STR1## (wherein R.sub.1 and R.sub.2 each represents an alkyl group having 1 to 4 carbon atoms; X is a hydrogen atom, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group or an aryl group); ##STR2## (wherein R.sub.3 and R.sub.4 each represents an alkyl group, provided that the total number of carbon atoms in the alkyl groups represented by R.sub.3 and R.sub.4 is 9 or more; Y is a hydrogen atom, a halogen atom, a methyl group, an ethyl group, a methoxy group, an ethoxy group or an aryl group).Type: GrantFiled: January 12, 1987Date of Patent: December 13, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera, Hideki Inahata
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Patent number: 4770985Abstract: A silver halide photographic material is disclosed which has formed on a support in sequence a silver halide emulsion layer incorporating a yellow coupler of the formula (I), a silver halide emulsion layer incorporating a magenta coupler of the formula (II), and a silver halide emulsion layer incorporating a cyan coupler of the formula (III): ##STR1## wherein R.sub.1 is a hydrogen atom, a halogen atom or an alkoxy group; R.sub.2 is --NHCOR.sub.3, --NHSO.sub.2 R.sub.3, --COOR.sub.3 or ##STR2## provided that R.sub.3 and R.sub.4 are each an alkyl group; and Z.sub.1 is a non-metallic atomic group necessary to form a 5- or 6-membered hetero ring together with a nitrogen atom); ##STR3## [wherein R.sub.5 is a hydrogen atom, a halogen atom or an alkoxy group having 1 to 4 carbon atoms; R.sub.6 is (provided that R.sub.7 and R.sub.8 are each a hydrogen atom or an acyl group, and when R.sub.7 and R.sub.Type: GrantFiled: October 26, 1987Date of Patent: September 13, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shun Takada, Takashi Kadowaki, Masao Sasaki, Toyoki Nishijima, Kaoru Onodera
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Patent number: 4731320Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a support is disclosed wherein at least one of said silver halide emulsion layers contains at least one cyan coupler of formula (I) dispersed therein with the aid of a high-boiling organic solvent having a dielectric constant of not more than 6.0: ##STR1## (wherein R.sub.1 is a straight- or branched-chain alkyl group having 2 or 4 carbon atoms; X is a hydrogen atom or a group capable of leaving upon coupling reaction; and R.sub.2 is a ballast group).Type: GrantFiled: August 13, 1986Date of Patent: March 15, 1988Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Toyoki Nishijima, Shun Takada, Takashi Kadowaki, Kaoru Onodera
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Patent number: 4692399Abstract: A silver halide photographic light-sensitive material is disclosed, which is excellent in light discoloration resistance and is more particularly capable of keeping its color balance and reproducing long life color images. The photographic material comprises a support, at least three light-sensitive silver halide emulsion layers containing a yellow, magenta, and cyan coupler, respectively, and at least one non-light-sensitive layer being provided at a further side of the emulsion layer being provided at the furthest position from the support. The non-light-sensitive layer contains at least three kinds of UV absorbers represented by the general formula [UV-I], provided that at least one of the UV absorbers is in a liquid state at 30.degree. C. and at least two UV absorbers are in a solid state at the same temperature.Type: GrantFiled: July 1, 1986Date of Patent: September 8, 1987Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Takashi Kadowaki, Kaoru Onodera
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Patent number: 4623207Abstract: To simplify both the printed circuit board connector structure itself and the circuit board connecting work, the improved circuit board connector comprises a connector body and plural roughly U-shaped spring contacts elastically housed within the connector body. Circuit boards to be connected are engageable with the board connector in card edge connection manner or in bolt-nut connection manner. The above board connector is simple in structure and in connecting operation so as to be available for an automatic mass-production assembly process line.Type: GrantFiled: June 25, 1985Date of Patent: November 18, 1986Assignees: Oki Densen Kabushiki Kaisha, Oki Electric Industry Company, LimitedInventors: Masao Sasaki, Kazuo Wada, Jiro Tanuma
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Patent number: 4623616Abstract: A silver halide photographic light-sensitive material comprising a support bearing thereon a silver halide emulsion layer containing a diffusionproof coupler and being hardened with a hardening agent represented by Formula [II] and/or Formula [III] indicated below is enabled to acquire improved film properties and enjoy increased freedom from repression of latent image by using, as the diffusionproof coupler, a compound represented by Formula [I] indicated below: Formula [I] ##STR1## wherein R.sub.1 denotes a straight or branched alkyl group having 2 to 4 carbon atoms; R.sub.2 a ballast group; and X a hydrogen atom or a group capable of splitting off through reaction with the oxidation product of an aromatic primary amine type color developing agent. ##STR2## wherein R.sub.3 denotes a chlorine atom, a hydroxy group, an alkyl group, an alkoxy group, an amino group, an acylamino group, or a --OM group in which M denotes a monovalent metal atom; R.sub.4 has the same meaning as R.sub.Type: GrantFiled: March 26, 1985Date of Patent: November 18, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Shun Takada, Takashi Kadowaki, Masao Sasaki, Toyoki Nishijima, Kaoru Onodera
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Patent number: 4614709Abstract: A silver halide photographic light-sensitive material having a support with at least one silver halide emulsion layer is provided. The silver halide emulsion layer containing in combination at least one yellow dye image-forming coupler of Formula I and at least one high-boiling organic solvent of Formula II to reduce the light discoloration of a yellow dye image.Type: GrantFiled: December 20, 1983Date of Patent: September 30, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4609618Abstract: Silver halide photographic light-sensitive material comprising a support and at least one silver halide emulsion layer thereon, said layer comprising at least one cyan coupler of Formula I, said coupler having been dispersed in said emulsion layer by use of at least one solvent of Formula II, ##STR1## wherein R.sub.1 is an alkyl radical or an aryl radical; R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each is a radical selected from the group consisting of hydrogen, halogens, hydroxyl radical, nitro radical, cyano radical, alkyl radicals, alkoxy radicals, aryl radicals, aryloxy radicals, alkylsulfamoyl radicals, arylsulfamoyl radicals, alkyloxycarbonyl radicals, aryloxycarbonyl radicals, alkylsulfonamido radicals, arylsulfonamido radicals, alkylsulfonyl radicals and arylsulfonyl radicals, provided that when R.sub.2 is a radical selected from said alkylsulfonamido radicals, R.sub.6 also is selected from said alkylsulfonamido radicals; and Z.sub.Type: GrantFiled: December 4, 1985Date of Patent: September 2, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4579408Abstract: In an electrical connector locked and released by means of snap members, a supporting axle of the snap member is located between a sector-shaped bottom surface of the snap member and center of curvature of the sector so as to allow pivotal axis of the snap member to travel along elongated holes provided in the side walls as the snap member is pivoted and/or knurled edge and rib are provided at the top end of the snap member for guiding the female connector toward the male connector pins so as to align the pin holes of the female connector with the male connector pins.Type: GrantFiled: April 4, 1984Date of Patent: April 1, 1986Assignee: OKI Densen Kabushiki KaishaInventor: Masao Sasaki
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Patent number: 4564590Abstract: A silver halide photographic material having one or more silver halide emulsion layers formed on a reflective support is disclosed, wherein at least one of the silver halide emulsion layers contains at least one cyan coupler of formula (I) dispersed therein with the aid of at least one high-boiling organic solvent having a dielectric constant of 6.1 or more, and wherein at least one photographic layer contains at least one dye of formula (II) and/or formula (III): ##STR1## wherein R.sub.1 is a straight- or branched-chain alkyl group having 2 to 4 carbon atoms; R.sub.2 is a ballast group; and X is a hydrogen atom or a group capable of leaving upon coupling reaction with the oxidized product of a color developing agent; ##STR2## wherein R.sub.3 and R.sub.5 are each a hydrogen atom, an alkyl group or an aryl group; R.sub.4 and R.sub.Type: GrantFiled: March 19, 1985Date of Patent: January 14, 1986Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Toyoki Nishijima, Shun Takada, Takashi Kadowaki, Kaoru Onodera
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Patent number: 4540656Abstract: A color photographic light-sensitive material comprising, on a reflective support, at least one light-sensitive silver halide emulsion layer containing a dye-forming coupler and a non-light-sensitive layer provided on the light-sensitive silver halide emulsion layer, located furthest from the reflective support, the non-light-sensitive layer containing:(a) a benzotriazole derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 independently represent an alkyl, an alkoxy, an alkenyl, each alkyl, alkoxy, or alkenyl having not less than 4 carbon atoms, an aryl, or an aryloxy, said aryl and aryloxy each being substituted or unsubstituted and wherein R.sub.3 represents hydrogen, a halogen, an alkyl, an alkoxy, an alkenyl, each alkyl, alkoxy, or alkenyl having not less than 4 carbon atoms, an aryl, or an aryloxy; and(b) at least one compound having selected from the formulae (II) or (III): ##STR2## wherein R.sub.4 and R.sub.Type: GrantFiled: May 27, 1983Date of Patent: September 10, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toyoki Nishizima, Masao Sasaki, Kaoru Onodera
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Patent number: 4540658Abstract: A silver halide color photographic product with dye images having improved fastness to light is disclosed. The product has at least one dye image forming layer on a support and further includes at least one of the compounds of formula (I) or (II) in said dye image forming layer and/or an adjoining or an adjacent layer: ##STR1## wherein R is an alkyl group, an aryl group or a heterocyclic group; X is an alkylene group; and Y is an alkylene or arylene group; and ##STR2## wherein R.sub.1 is a hydrogen atom, an alkyl group or an aryl group; R.sub.2 and R.sub.3 are each an alkyl group; Y.sub.1 is an alkylene or arylene group; Z is an oxygen atom, a sulfur atom, a sulfonyl group, a carbonyl group or an alkylene group; and n is an integer of 1 to 20.Type: GrantFiled: June 24, 1983Date of Patent: September 10, 1985Assignee: Konishiroku Photo Industry Co. Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4526853Abstract: A silver halide color photographic material having improved whiteness and a method of processing said material are disclosed. The material is formed on a hydrophobic support at least one silver halide emulsion layer, a layer containing a brightening agent and a layer containing a compound that is capable of trapping the brightening agent, said layer containing a compound capable of trapping the brightening agent being separate from the layer containing the brightening agent and positioned more remote from the support than the latter layer, and also, the method for providing enhanced brightening effect comprises subjecting said material to imagewise exposure and color development so that said brightening agent is diffused into and trapped by the layer containing capable of trapping the brightening agent.Type: GrantFiled: October 14, 1983Date of Patent: July 2, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Toyoki Nishijima, Masao Sasaki, Kaoru Onodera
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Patent number: 4518686Abstract: A color photographic light-sensitive material comprising a reflective support having thereon a plurality of silver halide emulsion layers of which the emulsion layer located farthest from said support has, on each of both the support side thereof and the uppermost side at least one nonlight-sensitive layer containing an effective amount of an ultraviolet absorbing agent, said ultraviolet absorbing agent being used in said nonlight-sensitive layer on the uppermost side of said emulsion layer being a 2-(2'-hydroxyphenyl)benzotriazole-type compound which is in the liquid form at normal room temperature.Type: GrantFiled: June 3, 1983Date of Patent: May 21, 1985Assignee: Konishiroku Photo Industry Co., Ltd.Inventors: Masao Sasaki, Kaoru Onodera
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Patent number: 4449417Abstract: Disclosed is a carrier moving mechanism for preventing occurrence of the backlash between a screw shaft and a carrier transmitted by this screw shaft. This carrier moving mechanism comprises a screw shaft and a carrier having secured thereon first and second nuts having teeth to be engaged with the lead of this screw shaft, in which the teeth of the first nut are brought into contact with one side face of the lead of the screw shaft and the teeth of the second nut are brought into contact with the other side face of the lead of the screw shaft and the carrier is moved through these first and second nuts by rotation of the screw shaft.Type: GrantFiled: March 12, 1982Date of Patent: May 22, 1984Assignee: Oki Electric Industry Co., Ltd.Inventor: Masao Sasaki
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Patent number: 4330406Abstract: Ultrathin membranes for separating substances are obtained by exposing shaped articles comprising a water-soluble polymer or a mixture of a water-soluble polymer and water-insoluble polymer to a plasma of a gas selected from helium, argon, nitrogen, hydrogen, oxygen, carbon monoxide, carbon dioxide, ammonia, a hydrocarbon having 1 to 10 carbon atoms, an epoxide having 2 to 10 carbon atoms, or an alkylamine, or a mixture of these substances to crosslink the surface layer, and then washing the exposed articles with water to remove the unreacted portions. The membrane exhibits outstanding performance characteristics when used in the processes for separating or concentrating substances, such as reverse osmosis, ultrafiltration, and the like.Type: GrantFiled: August 27, 1979Date of Patent: May 18, 1982Assignee: Sumitomo Chemical Company, LimitedInventors: Takezo Sano, Takatoshi Shimomura, Masao Sasaki
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Patent number: 4325646Abstract: An inkribbon cartridge for a printer is disclosed which compulsorily keeps a definite form by a cooperation with its box member and a lid member.The box member which comprises a plurality of concavities on the outside of a wall and a plurality of projections on the upper end of the wall near the concavities is engaged with the lid member which comprises a plurality of hooks which is inserted in the concavities to prevent outward deformation of the wall and a plurality of cuts which associate with the projections to prevent inward deformation of the wall.By these provisions, in- and outward deformations of the wall of the box member can be undertaken by the lid member and the inkribbon cartridge compulsorily keeps its definite form.Type: GrantFiled: February 8, 1980Date of Patent: April 20, 1982Assignee: Oki Electric Industry Co., Ltd.Inventor: Masao Sasaki