Patents by Inventor Akira Ogawa
Akira Ogawa 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: 4500635Abstract: A color photographic silver halide light-sensitive material is described. The material includes a cyan coupler represented by the general formula (I): ##STR1## (the symbols are as described in the claims). This coupler is easily soluble in high boiling organic solvents, exhibits a high dye-forming rate in developers, and furthermore, provides color images of high fastness.Type: GrantFiled: March 14, 1984Date of Patent: February 19, 1985Assignee: Fuji Photo Film Co., Ltd.Inventors: Kozo Aoki, Akira Ogawa, Osami Tanabe
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Patent number: 4477558Abstract: A silver halide color photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, the color photographic light-sensitive material containing a cyan dye forming coupler represented by the following general formula (I): ##STR1## wherein R represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a heterocyclic group; X represents a hydrogen atom or a group capable of being released upon an oxidative coupling reaction with a developing agent; R.sup.1 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group.Type: GrantFiled: April 21, 1983Date of Patent: October 16, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Ogawa, Kozo Aoki, Takayoshi Kamio
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Patent number: 4462101Abstract: A maximum likelihood error correcting technique for a digital communication in which a transmit side provides coded data with some redundancy through a convolutional coding circuit, and a receive side corrects transmission errors automatically through a maximum likelihood error correcting circuit has been improved by deleting some symbols at a transmit side to increase a coding rate close to 1, and inserting dummy symbols at a receive side into each bit position where a symbol has been deleted at a transmit side. A likelihood value for that dummy symbol inserted at a receive side for the maximum likelihood decoding is a fixed predetermined value. Thus, both a coding circuit in a transmit side and a decoding circuit in a receiving circuit have only to handle original low rate code, while keeping a coding rate in a transmission line high.Type: GrantFiled: March 5, 1982Date of Patent: July 24, 1984Assignee: Kokusai Denshin Denwa Co., Ltd.Inventors: Yutaka Yasuda, Yasuo Hirata, Akira Ogawa
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Patent number: 4457217Abstract: A hot drink maker comprises an outer casing, a hot water tank located in the casing at a relatively high position and filled with hot water heated to a predetermined temperature, a device for controlling water supply in the hot water tank, a funnel filled with a material for preparing hot drink, and a storage tank disposed below the funnel for storing the prepared hot drink. The storage tank is suspended in a heat insulating box with air space therebetween and the air in the space is uniformly heated by an electric heater at a temperature suitable for drinking. A hot water supply pipe interconnects the hot water tank and the funnel through a spray head located above the funnel.Type: GrantFiled: March 14, 1983Date of Patent: July 3, 1984Assignee: Toshiba Kikai Kabushiki KaishaInventors: Akira Ogawa, Yasuyuki Iida
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Patent number: 4456988Abstract: A satellite repeater for a digital satellite communication system for use on board of satellites. Receivers are provided with respective antennas for receiving radio-frequency signals from a plurality of ground stations. A signal processing circuit switches signals received in synchronism with stable clock timings. Transmitters receive the switched outputs of the signal processing circuit to provide radio-frequency signals for transmission through respective antennas of the transmitters. Timing detectors receive the outputs of the receivers and detect the frame timings of the output signals of the receivers. Signal storage circuits are provided between respective outputs of the receivers and the signal processing circuit for storing the respective output signals of the receivers by respective amounts.Type: GrantFiled: January 27, 1982Date of Patent: June 26, 1984Assignee: Kokusai Denshin Denwa Kabushiki KaishaInventors: Yukio Nakagome, Akira Ogawa, Yasuo Hirata, Toshio Takahashi
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Patent number: 4446470Abstract: An ink-jet color printing system for painting a color image with complex colors arranged in ink-dot patterns; comprises a color image information input unit for reading out color image information from a color original, a color image information processing unit for memorizing the color image and carrying out a non-linear masking procedure, and color printer apparatus for painting a color image by depositing ink dots of yellow, magenta and cyan on a recording medium. New yellow, magenta and cyan ink dyes are also disclosed.Type: GrantFiled: June 1, 1982Date of Patent: May 1, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Sugiyama, Kazutaka Yoshida, Akira Ogawa
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Patent number: 4445009Abstract: A step switch is formed by a rocking member which is coupled at its ends to perpendicular pivotting interlocking levers which, in turn, reciprocate a control plate in a longitudinal direction. The control plate carries pawls which engage ratchet teeth on a slidable contact holder to move the latter through one step in response to pressure on either end of the rocking member. A notch is formed for receiving each pawl at the end of its reciprocating path for preventing slip in the switch operation.Type: GrantFiled: October 20, 1981Date of Patent: April 24, 1984Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventors: Masaru Suzuki, Akira Ogawa
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Patent number: 4425162Abstract: Colored ink useful within an ink-jet printing device is disclosed. The ink is comprised of specifically disclosed yellow dyes, magenta dyes and cyan dyes within an aqueous ink composition. The use of the specific dyes within the aqueous ink composition prevents clogging within the nozzle of the ink-jet printer during operation or after operation has been restarted after a suspension of use of the printer. The ink composition has a high light-fastness characteristic, is not easily discolored by exposure to light and produces faithful color reproduction.Type: GrantFiled: June 15, 1981Date of Patent: January 10, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Sugiyama, Keiichi Adachi, Eiichi Kato, Akira Ogawa, Shinichi Imai
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Patent number: 4388115Abstract: An aqueous ink composition having a water-soluble dye and a wetting agent dissolved in water is disclosed. The composition uses at least one water-soluble dye of the formula (I): ##STR1## wherein R.sub.1 is a phenyl group, a substituted phenyl group, an alkyl group or a substituted alkyl group; R.sub.2 is an alkyl group, a phenyl group, a substituted phenyl group, a cyano group, a hydroxyl group, an alkoxy group, an amino group, an acylamino group, an anilino group, a ureido group, an alkoxycarbonyl group or a carbamoyl group; X is a halogen atom, an alkyl group or an alkoxy group; n is 1, 2, 3, 4 or 5; and m is 1, 2, or 3, provided that the sulfo group in the formula (I) may be an alkali metal salt, an ammonium salt or an organic amine salt.Type: GrantFiled: June 15, 1981Date of Patent: June 14, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Sugiyama, Akira Ogawa, Shinichi Imai
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Patent number: 4371582Abstract: An ink jet recording sheet containing a basic latex polymer is described, which can provide images, having excellent water resistance properties and high image density, by jetting thereonto an aqueous ink containing a water-soluble dye. In the case of applying a multicolor ink jet recording to the recording sheet, color images having excellent color reproduction are obtained.Type: GrantFiled: August 12, 1981Date of Patent: February 1, 1983Assignee: Fuji Photo Film Co., Ltd.Inventors: Masatoshi Sugiyama, Ichiro Nakanishi, Akira Ogawa, Masakazu Maekawa
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Patent number: 4330694Abstract: A complex switch assembly specially for use in a motor vehicle for controlling positions of rear viewing mirrors provided on left and right-hand sides of the motor vehicle includes an operating lever constituted by a sphere, a bar portion extending radially outwardly from the sphere and a leg portion extending radially outwardly from the sphere in a direction opposite to the bar portion. The sphere is rotatably supported in a casing so that the operating lever can be rotated between first and second neutral positions about the axis of the operating lever and also can be tilted in four directions about the center of the sphere from each of the neutral positions. The leg portion controls a switch mechanism in accordance with the tilting of the operating lever.Type: GrantFiled: January 31, 1980Date of Patent: May 18, 1982Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventor: Akira Ogawa
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Patent number: 4254212Abstract: A photographic silver halide light-sensitive emulsion containing a cyan color forming colorless coupler having at the coupling position at which the coupler reacts with the oxidation product of an aromatic primary amine developing agent at least one alkoxy group having a sulfonyl group as a substituent and represented by the following general formula (I):--O--R--SO.sub.2 --R.sub.1 (I)wherein R represents a saturated or unsaturated divalent aliphatic group having 1 to 4 carbon atoms which may be straight or branched chain and may be substituted (except those having an aryl group as a substituent on the carbon atom adjacent the oxygen atom bonded to the coupling position); and R.sub.1 represents an aliphatic group, an aromatic group or a heterocyclic group; and wherein R and R.sub.1 can combine directly or through a bonding group to form a ring and an image-forming process.Type: GrantFiled: August 29, 1979Date of Patent: March 3, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Morio Yagihara, Yukio Yokota, Akira Ogawa, Hiroshi Sawaguchi
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Patent number: 4243747Abstract: A color photographic light-sensitive material comprising a support having thereon a silver halide emulsion layer containing 2,5-bis(1',1'-dimethylbutyl)hydroquinone or a precursor thereof and a 3-anilino-5-pyrazolone type magenta coupler represented by the following general formula (II): ##STR1## wherein IR represents RCONH--, RNHCO--, ROCO--, RNHSO.sub.2 --, ROSO.sub.2 NH-- ##STR2## wherein R represents a hydrogen atom, an alkyl group having 1 to 35 carbon atoms, an alkenyl group or an aralkyl group, which groups can be further substituted.The color photographic light-sensitive material can provide color images having excellent fastness and free from discoloration at the non-image areas.Type: GrantFiled: January 17, 1979Date of Patent: January 6, 1981Assignee: Fuji Photo Film Co., Ltd.Inventors: Kotaro Nakamura, Keiichi Adachi, Akira Ogawa
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Patent number: 4218654Abstract: A space diversity system in a TDMA communication system employing a communication satellite, in which in order to equalize the path lengths of respective sending paths at the start of communication, a pre-burst is sent out to one of the paths making up the diversity system in a time slot of one frame assigned to an instant station. A sub-burst is sent out to the other of the paths in the assigned time slot. A relative time difference between the pre-burst and the sub-burst is detected from signals sent back to the instant station from the communication satellite or signals received by a distant terrestral station via the communication satellite.Type: GrantFiled: February 21, 1979Date of Patent: August 19, 1980Assignee: Kokusai Denshin Denwa Kabushiki KaishaInventors: Akira Ogawa, Tatsuo Watanabe, Hideki Saito
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Patent number: 4191101Abstract: Apparatus for preparing a cup of hot drink includes a hot water supply device and a powder supply device. The hot water supply device comprises a tank for storing the hot water, a member for controlling the temperature of the hot water in the tank, valve means for controlling the pressure of the hot water, a pipe for feeding the hot water and valve means for controlling the amount of the hot water to be fed. The powder supply device comprises a hopper filled with the powder, a powder measuring device connected to the bottom of the hopper, a chute connected to the bottom of the powder measuring device, and a table on which a cup is placed so that the hot water is poured eccentrically from the center of the cup. The powder measuring device comprises a two-stage shutter mechanism.Type: GrantFiled: December 19, 1978Date of Patent: March 4, 1980Assignee: Toshiba Kikai Kabushiki KaishaInventors: Akira Ogawa, Toyoaki Masuda, Osamu Miura
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Patent number: 4156611Abstract: A heat-developable photosensitive material which comprises a support having thereon at least one layer containing (a) an organic silver salt, (b) a catalytic amount of a photosensitive silver halide or a compound which forms a photosensitive silver halide, (c) a reducing agent, and (d) at least one sensitizer selected from the group consisting of compounds represented by the formulae (I) and (II): ##STR1## wherein R represents an unsubstituted or substituted alkyl group having 1 to 4 carbon atoms or an aryl group; and Q represents a group of atoms necessary to complete a rhodanine nucleus, a thiohydantoin nucleus or a 2-thio-2,4-oxazolidine-dione nucleus and wherein said compound represented by the formulae (I) and (II) include at least one carboxyl group as a substituent, and (e) a binder.Type: GrantFiled: March 15, 1977Date of Patent: May 29, 1979Assignee: Fuji Photo Film Co., Ltd.Inventors: Shinpei Ikenoue, Takao Masuda, Akira Ogawa, Akira Sato, Yuji Mihara
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Patent number: 4154616Abstract: A silver halide photographic emulsion containing at least one sensitizing dye represented by the following general formula (I), ##STR1## in which Z represents an atomic group necessary for forming a benzoxazole nucleus or a naphthoxazole nucleus; R.sub.1 represents an aliphatic group; R.sub.2 represents an alkyl group, an allyl group or an aryl group; R.sub.3 represents a 2-(2-hydroxyethoxy)-ethyl group, a 2-(2-acyloxyethyoxy)-ethyl group, an N-(N,N-dialkylaminoalkyl)carbamoylalkyl group, an N-(N,N,N-trialkylammoniumalkyl)carbamoylalkyl group or an N,N,N-trialkylammoniumalkyl group; X represents an acid anion; and n represents 0 or 1.Type: GrantFiled: May 12, 1977Date of Patent: May 15, 1979Assignee: Fuji Photo Film Co., Ltd.Inventors: Akira Sato, Akira Ogawa, Masanao Hinata, Haruo Takei
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Patent number: 4148658Abstract: A photopolymerizable composition comprising, as essential components, (A) at least one compound having one or more addition polymerizable ethylenically unsaturated double bonds and (B) a photopolymerization initiator composition comprising (i) a combination of at least one compound (a) and at least one compound (b), (ii) a combination of at least one compound (a) and at least one compound (c) or (iii) a combination of at least one compound (a), at least one compound (b) and at least one compound (c);Wherein compound (a) is a benzoylmethylenebenzothiazolylidenethiazolidone compound selected from the group consisting of 2-benzoylmethylene-5-benzothiazolylidenethiazolidin-4-one and the substituted derivatives thereof represented by the following general formula (I): ##STR1## wherein R.sup.1, R.sup.2 and X are as defined in the specification; COMPOUND (B) IS A TERTIARY OR POLYAMINE COMPOUND SELECTED FROM THE GROUP CONSISTING OF TERTIARY AMINES REPRESENTED BY THE FOLLOWING GENERAL FORMULA (II): ##STR2## wherein R.Type: GrantFiled: November 29, 1977Date of Patent: April 10, 1979Assignee: Fuji Photo Film Co., Ltd.Inventors: Syunichi Kondoh, Akihiro Matsufuji, Akira Umehara, Akira Sato, Akira Ogawa
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Patent number: 4146893Abstract: A system for compensating for cross polarization coupling in a dual-polarization satellite communication system, in which two polarized waves of the same frequency and orthogonal to each other are alternately transmitted as a pilot wave from an earth station at a predetermined period. The same polarized wave components of the two signals received by a communication satellite are sent back to the earth station, so that the sent back signal is received by the earth station. An amplitude ratio and a phase difference between the same polarized wave components of the two signals of the received pilot signal are detected. A communication signal wave to be transmitted from the earth station is formed as an elliptically polarized wave by the use of the detected information, thereby compensating for cross polarization coupling of the communication signal wave caused during propagation between the earth station and the communication satellite.Type: GrantFiled: November 15, 1977Date of Patent: March 27, 1979Assignee: Kokusai Denshin Denwa Kabushiki KaishaInventors: Kazunori Inagaki, Yasuo Hirata, Akira Ogawa
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Patent number: 4137857Abstract: A belt looper apparatus comprises a delivery means, an accepting means, a cutter, a folding means, a sewing machine, a movable guide, a garment-pressing means and a slackening means, wherein said movable guide and said garment presser are adapted to move in a direction equivalent to that of the delivery of the material.Type: GrantFiled: August 26, 1977Date of Patent: February 6, 1979Assignee: Miyachi Sewing Machine Co., Ltd.Inventors: Nobuji Miyachi, Keniti Miyake, Akira Ogawa