Patents by Inventor Hideo Ikeda
Hideo Ikeda 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: 4675276Abstract: A silver halide photographic material containing a mesoionic 1,2,4-triazolium-3-thiolate compound in at least one hydrophilic colloidal layer of the silver halide photographic material gives photographic images having stable and excellent quality without being accompanied by the increased formation of fog and increased changes of sensitivity and gradation upon high temperature processing.Type: GrantFiled: September 12, 1986Date of Patent: June 23, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Koki Nakamura, Tetsuro Kojima, Takashi Toyoda, Hideo Ikeda
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Patent number: 4657847Abstract: A silver halide photographic light-sensitive material comprising a support having coated thereon at least one silver halide emulsion layer and a surface protecting layer, said silver halide photographic light-sensitive material comprising photosensitive silver halide grains and internally fogged silver halide grains, said internally fogged silver halide grains having adsorbed thereon at least one compound represented by the formula (I): ##STR1## wherein X represents --O--, --NH-- or --S--, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent hydrogen atom or a substituent, and at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is substituted or unsubstituted alkyl or aryl group having up to 13 carbon atoms, which is bonded directly or through a divalent linkage group, to the aromatic nucleus.Type: GrantFiled: August 13, 1985Date of Patent: April 14, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideo Ikeda, Shigeru Ohno, Koki Nakamura, Nobuaki Miyasaka
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Patent number: 4656120Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one silver halide emulsion layer which is coated with a surface protective layer. The silver halide emulsion layer includes an inside fogged silver halide emulsion and a light-sensitive silver halide emulsion containing silver halide grains which are tabular silver halide grains having a grain diameter which is 5 times or more the grain thickness. The material is highly sensitive and forms images which have high contrast and a high maximum density. The material can be developed in a relatively short developing time at a low temperature treatment without using additives.Type: GrantFiled: August 5, 1986Date of Patent: April 7, 1987Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda
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Patent number: 4604339Abstract: A method of developing silver halide photographic material which contains a light-sensitive silver halide emulsion and an internally-fogged silver halide emulsion, in which the internally-fogged emulsion has internal fogging nuclei at a depth of 0.02.mu. or more below the surface of the grains is disclosed. The photographic material is developed in the presence of at least one compound selected from the group consisting of tetraazaindenes containing at least one mercapto group, purines containing at least one mercapto group, triazaindenes containing at least one mercapto group and pentaazaindenes containing at least one mercapto group, to increase photographic speed, contrast and maximum density as well as remove uneven stain.Type: GrantFiled: November 30, 1983Date of Patent: August 5, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda, Hiroyuki Mifune, Koki Nakamura
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Patent number: 4588678Abstract: A silver halide photographic material and a photographic development method are described, wherein the development method is carried out using a processing liquid containing a dialdehyde series hardening agent, and the photographic material comprises a support having thereon at least a silver halide emulsion layer containing silver halide grains having a silver iodide content higher than 1.5 mole %, with the silver iodide distribution in the silver halide grains being homogeneous throughout the grains or the silver iodide content being higher in the internal portion than in the surface portion of the silver halide grains.Type: GrantFiled: October 4, 1984Date of Patent: May 13, 1986Assignee: Fuji Photo Film Co., Ltd.Inventor: Hideo Ikeda
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Patent number: 4581329Abstract: A silver halide photographic light-sensitive material which comprises a support, a hydrophilic colloid layer or layers and a silver halide emulsion layer or layers, wherein at least one of said silver halide emulsion layers contains tabular silver halide grains having a diameter:thickness ratio of 5:1 or more and at least one compound represented by the following general formula (I) or general formula (II): ##STR1## wherein Z.sub.1 represents the non-metal atoms necessary to complete a 5- or 6-membered heterocyclic ring; R.sub.1 represents an unsubstituted or substituted alkyl group; R.sub.2 represents an unsubstituted or substituted aryl group with up to 2 aromatic fused rings, or an unsubstituted or substituted aralkyl group; R.sub.3 represents a hydrogen atom or with R.sub.1 an alkylene group forming a ring; R.sub.Type: GrantFiled: March 12, 1984Date of Patent: April 8, 1986Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Sumito Yamada, Hideo Ikeda, Masaki Okazaki, Tadashi Ikeda
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Patent number: 4551419Abstract: A silver halide photographic material which contains a light-sensitive silver halide emulsion and an internally fogged silver halide emulsion is development-processed in the presence of at least one compound selected from the group consisting of compounds represented by the general formulae (I) and (II) and at least one azaindene having a mercapto group to exhibit high photographic speed, high contrast and high maximum image density:R.sub.1 --(R.sub.3).sub.l X}.sub.n R.sub.3 '--R.sub.2 (I)wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an aryl group, an aryl group, or a heterocyclic group; R.sub.3 and R.sub.3 ' each represents an alkylene group, an arylene group, a heterocyclic group; X presents ##STR1## R.sub.4 represents a hydrogen atom or --R.sub.5 --Y}.sub.m R.sub.5 '--R.sub.6 ; R.sub.5 and R.sub.5 ' have the same meanings as R.sub.3 and R.sub.3 '; R.sub.6 has the same meaning as R.sub.1 and R.sub.2 ; Y represents ##STR2## R.sub.7 has the same meaning as R.sub.1 and R.sub.Type: GrantFiled: February 10, 1984Date of Patent: November 5, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda, Koki Nakamura
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Patent number: 4551421Abstract: A silver halide photographic material is disclosed. The material is comprised of a support base having positioned thereon a silver halide emulsion layer and a surface protective layer. The emulsion layer contains a photosensitive silver halide emulsion, an internally fogged silver halide emulsion and a compound represented by the general formula (I):R.sub.1 [(R.sub.3).sub.l X].sub.n R.sub.3 '--R.sub.2wherein the substituents within the general formula (I) are defined within the specification. The photographic material is capable of providing an image having a high maximum density at a high speed and a high contrast. The material can be processed without requiring any specific additives in a short developing period using low-temperature processing. The material also possesses high-temperature quick processing aptitude.Type: GrantFiled: February 13, 1984Date of Patent: November 5, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda, Koki Nakamura
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Patent number: 4521508Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having thereon a silver halide emulsion layer and a protective layer. The material contains a photosensitive silver halide emulsion and inside fogged silver halide emulsion as well as a disulfide compound. The disulfide compound is a compound represented by the general formula (I):A--S--S--B (I)wherein A and B independently represent an alkyl group, an aralkyl group, an aryl group, a heterocyclic group or ##STR1## wherein R represents an alkyl group, an aryl group, an aralkyl group, a heterocyclic group or an amino group. The material can form images having high contrast and a high maximum density. Further, the material has high sensitivity to light and can be developed at a low temperature in a reduced amount of time.Type: GrantFiled: November 7, 1983Date of Patent: June 4, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda, Hiroyuki Mifune, Koki Nakamura
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Patent number: 4506008Abstract: A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support base having positioned thereon a silver halide emulsion layer and a protective layer. The silver halide emulsion layer includes at least two component layers including an upper layer and a lower layer. The upper layer is comprised of a photosensitive silver halide emulsion and the lower layer is comprised of a photosensitive silver halide emulsion and an inside fogged silver halide emulsion. The particle size of the inside fogged silver halide emulsion is smaller than that of the photosensitive silver halide emulsion in the upper layer and the lower layer. The material is highly sensitive and forms images which have high contrast and high density. The material is capable of forming images having a pure black tone. When the materials are processed they create substantially no stain even if a stopping bath is not utilized.Type: GrantFiled: June 9, 1983Date of Patent: March 19, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Tadao Sugimoto, Hideo Ikeda
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Patent number: 4364578Abstract: A lateral drag link type steering linkage for an automotive vehicle equipped with a vehicle frame and a pair of front wheels and a pair of rear wheels attached thereto. The linkage includes a relay lever pivotally mounted at one end thereof to the vehicle frame, the relay lever having a connecting portion, a drag link ball joint through which the connecting portion of the relay lever is movably joined to one end of a drag link, and a relay rod one end of which is movably connected to one end of a pitman arm for a steering gear and the other end of which is movably connected to the connecting portion of the relay lever. The drag link ball joint is positioned near the imaginary line between a pair of knuckle ball joints for a pair of knuckle arms.Type: GrantFiled: September 24, 1980Date of Patent: December 21, 1982Assignee: Nissan Motor Co., Ltd.Inventors: Hideo Ikeda, Hideo Aizawa
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Patent number: 4357086Abstract: This specification discloses a focus detecting optical device for photoelectrically effecting focus delection by the use of two restricted light beams passed through different areas in the pupil of a phototaking lens in a single lens reflex camera including a finder screen capable of imaging the light beam from the phototaking lens and a pentaprism having reflecting surfaces capable of reflecting a light beam passed through said screen toward an eyepiece lens system having an optical axis substantially orthogonal to said screen.Type: GrantFiled: July 28, 1981Date of Patent: November 2, 1982Assignee: Nippon Kogaku K.K.Inventors: Jun Shimomura, Hideo Ikeda, Yutaka Iizuka
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Patent number: 4337953Abstract: A sealing device has a single rubber seal member provided with two oppositely directed seal lips which form a V-shaped cross-section and which are in contact with a spherical surface. Grease is filled in the V-shaped space. A portion of an outer fitting member protrudes inwardly to hold the seal member in place.Type: GrantFiled: March 7, 1980Date of Patent: July 6, 1982Assignees: Nissan Motor Co., Ltd., Keeper Co., Ltd.Inventors: Hideo Ikeda, Masao Teraoka, Junzo Ishimaru
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Patent number: 4289937Abstract: A speaker comprises a voice coil placed in an air gap between a center pole and a plate wherein a specific ferromagnetic material obtained by forming fine crystalline grains is used on at least one of the surfaces of the center pole and the plate which respectively face the voice coil, thereby providing a speaker having low distortion.Type: GrantFiled: May 10, 1979Date of Patent: September 15, 1981Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hideo Ikeda, Hideshi Tsuchiya, Masaru Okada
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Patent number: 4196246Abstract: Anti-reflection film for a synthetic resin base comprises a first layer of silicon dioxide (SiO.sub.2) deposited on the synthetic resin base by evaporation, a second layer of alumina (Al.sub.2 O.sub.3) deposited on the first layer by evaporation, and a third layer of silicon dioxide (SiO.sub.2) or magnesium fluoride (MgF.sub.2) deposited on the second layer by evaporation. The first layer has a geometrical film thickness of 1 to 5 .mu., the second layer has an optical film thickness of .lambda./4, and the third layer has an optical film thickness of .lambda./4.Type: GrantFiled: June 22, 1977Date of Patent: April 1, 1980Assignee: Nippon Kogaku K.K.Inventors: Hidetaka Takayama, Hideo Ikeda
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Patent number: 4083694Abstract: A plurality of parallel slanted fins like a louver are formed at a bottom wall of a heat insulating panel located under a catalytic converters with an exhaust pipe for attachment to an engine exhaust system.Type: GrantFiled: March 19, 1976Date of Patent: April 11, 1978Assignee: Nissan Motor Company, LimitedInventors: Noriyuki Takeda, Hideo Ikeda, Iwao Nakamura, Noriaki Uchida
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Patent number: 4064605Abstract: A method for continuously producing a non-woven web having uniform distribution of filaments from natural or synthetic fibers comprising drafting with use of a high speed air-jet type drafting device a number of filaments which are fed from a filament source and blasting the drafted filaments onto a face of a moving collector, which is characterized in that the distribution of the filaments is controlled by passing the filaments through a filament distribution-controlling device comprising a filament guide passage having a narrow rectangular cross section and an air sucking means provided at least an one rectangular side wall of the filament guide passage, said controlling of the distribution of the filaments being performed with the air stream sucked spontaneously or positively from the air sucking means.Type: GrantFiled: August 26, 1976Date of Patent: December 27, 1977Assignee: Toyobo Co., Ltd.Inventors: Takashi Akiyama, Akinori Tanji, Hideo Ikeda, Seiichi Asano
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Patent number: 3989678Abstract: A hot melt adhesive which comprises a copolyamide consisting essentialy of (1) .epsilon.-caprolactam, (2)(a) hexamethylenediamine and (b) at least one straight chain, saturated aliphatic dicarboxylic acid having 6 to 20 carbon atoms in a substantially equimolar ratio and (3)(a) at least one of 2,2,4-trimethylhexamethylenediamine and 2,4,4-trimethylhexamethylenediamine and (b) at least one straight chain, saturated aliphatic dicarboxylic acid having 6 to 20 carbon atoms in a substantially equimolar ratio, the proportion of [A] the constituent unit essentially consisting of the component (1), [B] the contituent unit essentially consisting of the components (2)(a) and (2)(b) and [C] the constituent unit essentially consisting of the components (3)(a) and (3)(b) therein being within a pentagon circumscribed by the lines connecting the points P (82/17/1), Q (52/47/1), R (0/65/35), S (0/50/50) and T (86/7/7) in the graph as shown in FIG.Type: GrantFiled: September 13, 1973Date of Patent: November 2, 1976Assignee: Toyo Boseki Kabushiki KaishaInventors: Kaoru Furukawa, Shinichiro Seki, Takashi Akiyama, Singo Ueda, Hideo Ikeda
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Patent number: 3979246Abstract: A metal tube covered with a flexible and porous heat insulator is immersed in a processing liquid comprising a silica-containing salt and water followed by drying. The insulator is stiffened and clings to the tube, so that strength, durability and heat resistance is improved, and clamping is facilitated.Type: GrantFiled: March 4, 1974Date of Patent: September 7, 1976Assignee: Nissan Motor Co., Ltd.Inventors: Koichi Ikeda, Hideo Ikeda
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Patent number: 3936136Abstract: A three-layer anti-reflection film for ultraviolet range comprises a first layer having a refractive index n.sub.1 determined so as to provide a great dispersion effect in the peripheral range, a second layer having a refractive index n.sub.2, and a third layer having a refractive index n.sub.1. The three layers are arranged symmetrically. The first and third layers are provided with an asymmetry so that an intended refractive index n* for the ultraviolet range from 200m.mu. to 400m.mu. may be obtained. The film has a predetermined optical thickness.Type: GrantFiled: November 19, 1973Date of Patent: February 3, 1976Assignee: Nippon Kogaku K.K.Inventors: Hideo Ikeda, Hideki Akasaka