Patents by Inventor Yasushi Abe
Yasushi Abe 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: 8530547Abstract: To provide a chloroprene rubber composition with which a vulcanized rubber having further improved heat resistance without impairing mechanical properties, the compression set and the tension fatigue can be obtained, and a rubber member for an automobile, a hose, a rubber molded article and a rubber vibration insulator comprising the vulcanized rubber. A chloroprene rubber composition, which comprises 100 parts by mass of at least one chloroprene rubber selected from the group consisting of a xanthogen-modified chloroprene rubber and a mercaptan-modified chloroprene rubber, and from 15 to 200 parts by mass of carbon black having a number average particle size of from 70 nm to 600 nm and having a DBP oil absorption of from 15 ml/100 g to 60 ml/100 g by oil absorption method A of JIS K6221.Type: GrantFiled: September 12, 2008Date of Patent: September 10, 2013Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Yasushi Abe, Hiroyuki Ishiguro
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Patent number: 8487668Abstract: When there is a short circuit failure between the gate and emitter of a main switching element such as an IGBT, the temperature of a turn-on gate resistor or turn-off gate resistor is detected by a thermistor, and a drive circuit is protected by turning off a turn-on gate drive switching element or a turn-off gate drive switching element. Furthermore, instead of detecting the temperature of the turn-on gate resistor or turn-off gate resistor, a thermistor is connected in series with the turn-on gate drive switching element or turn-off gate drive switching element, the resistance change corresponding to a change in temperature of the thermistor is detected, and the drive circuit is protected by turning off the turn-on gate drive switching element or turn-off gate drive switching element.Type: GrantFiled: July 28, 2010Date of Patent: July 16, 2013Assignee: Fuji Electric Co., Ltd.Inventor: Yasushi Abe
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Publication number: 20130095328Abstract: The laminate according to the present invention 1 has an acrylic elastomer layer 11 and a fluorine elastomer layer 12 that are bonded to each other. The acrylic elastomer layer 11 is made of an acrylic elastomer composition having an epoxy group-containing acrylic elastomer and an onium salt added and the fluorine elastomer layer 12 is made of a fluorine elastomer composition having a fluorine elastomer and a polyol crosslinking agent added. In the laminate 1, the elastomer layers are bonded tightly to each other even without any surface treatment.Type: ApplicationFiled: February 28, 2011Publication date: April 18, 2013Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Takashi Kawasaki, Takashi Sunada, Shogo Hagiwara, Yasushi Abe, Toshiaki Miyauchi
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Publication number: 20130090424Abstract: Provided are an acrylic rubber composition higher in processing stability and giving a vulcanizate having sufficient mechanical properties and favorable compression set resistance after secondary vulcanization (heated air vulcanization) and the vulcanizate thereof. The acrylic rubber composition according to the present invention includes (A) an epoxy group-containing acrylic rubber, (B) an imidazole compound represented by General Formula (1) below, (C) silica, and (D) a silane-coupling agent represented by General Formula (2) below. Such an acrylic rubber composition is superior in mechanical properties such as compression set resistance and hardness.Type: ApplicationFiled: March 31, 2011Publication date: April 11, 2013Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Satoru Ikari, Yasushi Abe, Toshiaki Miyauchi
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Patent number: 8416443Abstract: A plurality of sets of a printed document for distribution to a plurality of destinations is generated. For each one of the plurality of destinations, whether to perform conceal processing to document data is determined, and destination-specific print data is generated by performing conceal processing to the document data when it is determined that conceal processing is to be performed and by adding each one of the destination identification information identifying each one of the plurality of destinations to the document data.Type: GrantFiled: December 2, 2009Date of Patent: April 9, 2013Assignee: Ricoh Company, LimitedInventor: Yasushi Abe
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Patent number: 8325970Abstract: An image processing apparatus includes an obtaining unit, an area setting unit, and an adding unit. The obtaining unit obtains an adding method by which additional information is to be added to image data containing content information. The area setting unit sets an additional-information area to which the additional information is to be added based on the adding method and the content information. The adding unit adds the additional information to the additional-information area by the adding method.Type: GrantFiled: March 18, 2008Date of Patent: December 4, 2012Assignee: Ricoh Company, LimitedInventors: Masaaki Ishikawa, Yasushi Abe, Masaichi Niro, Hiroshi Shimura, Taeko Ishizu, Motohiro Kuroda
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Patent number: 8315424Abstract: An image processing apparatus configured to embed embedment information in image data includes an embedment information acquisition unit configured to acquire embedment information to be embedded in the image data, an information embedment manner determination unit configured to determine an information embedment manner to embed the embedment information according to one of the acquired embedment information and image data to be generated by embedding the acquired embedment information in the image data, and an information embedment unit configured to embed the acquired embedment information in image data according to the information embedment manner determined by the information embedment manner determination unit.Type: GrantFiled: March 18, 2008Date of Patent: November 20, 2012Assignee: Ricoh Company, Ltd.Inventors: Taeko Ishizu, Akihiro Mihara, Hiroshi Shimura, Masaaki Ishikawa, Haike Guan, Yasushi Abe, Motohiro Kuroda
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Publication number: 20120228945Abstract: A power converter can be configured of a first series circuit, formed from a first semiconductor switching element and a second semiconductor switching element connected in series to either end of a direct current voltage supply series circuit formed from a first direct current voltage supply and a second direct current voltage supply connected in series, and a second series circuit, formed from a third semiconductor switching element and a fourth semiconductor switching element connected in series between a connection point of the first direct current voltage supply and the second direct current voltage supply and a connection point of the first semiconductor switching element and the second semiconductor switching element. The first semiconductor switching element and the third semiconductor switching element can be configured of a first semiconductor device, and the second semiconductor switching element and the fourth semiconductor switching element can be configured of a second semiconductor device.Type: ApplicationFiled: March 6, 2012Publication date: September 13, 2012Applicant: FUJI ELECTRIC CO., LTD.Inventors: Yasushi ABE, Makoto HASHII, Kiyoshi TAKAHASHI
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Publication number: 20120141711Abstract: The present invention relates to an acrylic rubber composition that is unlikely to be deteriorated even when it is exposed to high temperature for a long time and that has excellent heat resistance and a cross-linked product of the composition. Provided is an acrylic rubber composition including an acrylic rubber and a functionalized silicone oil. Here, the functionalized silicone oil preferably has a particular polydimethylsiloxane structure having at least one binding site bonded with at least one of a monoamino group, a diamino group, a polyether group, an epoxy group, an alicyclic epoxy group, a hydroxyl group, a thiol group, a carboxyl group, a hydrogen group (Si—H group), a methacryl group, a phenol group, an alkoxy group, an ester group, an amide group, an alkyl group, a fluoroalkyl group, and a diol group and has a functional group equivalent weight of 1 to 100,000 (g/mol).Type: ApplicationFiled: August 18, 2010Publication date: June 7, 2012Inventors: Uichiro Yamagishi, Yasushi Abe, Toshiaki Miyauchi
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Patent number: 8180102Abstract: An image processing device including an area generation unit configured to generate a supplemental data-embedded area in image data having content data separate from an area occupied by the content data, and a data embedding unit configured to embed supplemental data in the supplemental data-embedded area.Type: GrantFiled: March 19, 2008Date of Patent: May 15, 2012Assignee: Ricoh Company, Ltd.Inventors: Yasushi Abe, Masaichi Niro, Hiroshi Shimura, Masaaki Ishikawa, Taeko Ishizu, Motohiro Kuroda
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Publication number: 20120025873Abstract: When there is a short circuit failure between the gate and emitter of a main switching element such as an IGBT, the temperature of a turn-on gate resistor or turn-off gate resistor is detected by a thermistor, and a drive circuit is protected by turning off a turn-on gate drive switching element or a turn-off gate drive switching element. Furthermore, instead of detecting the temperature of the turn-on gate resistor or turn-off gate resistor, a thermistor is connected in series with the turn-on gate drive switching element or turn-off gate drive switching element, the resistance change corresponding to a change in temperature of the thermistor is detected, and the drive circuit is protected by turning off the turn-on gate drive switching element or turn-off gate drive switching element.Type: ApplicationFiled: July 28, 2010Publication date: February 2, 2012Applicant: FUJI ELECTRIC CO., LTD.Inventor: Yasushi Abe
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Publication number: 20120020137Abstract: A single phase three-level power converter can include a first half bridge and a second half bridge. A half bridge operation is implemented in either the first half bridge or second half bridge when outputting a single phase alternating current voltage having an amplitude a half or less than that of a direct current input voltage, and also, by alternately switching between the bridges carrying out the half bridge operation. In certain configurations, the power converter can convert a direct current input voltage into alternating current phase voltages having three levels of potential, which are positive, negative, and intermediate voltages, by controlling on-off conditions of a plurality of switch elements, and a controller that, by supplying gate signals to the switch elements configuring the first half bridge and second half bridge, controls the related on-off conditions.Type: ApplicationFiled: July 22, 2011Publication date: January 26, 2012Applicant: FUJI ELECTRIC CO., LTD.Inventor: Yasushi ABE
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Publication number: 20120022195Abstract: Provided is a sulfur-modified chloroprene elastomer composition superior both in viscosity stability during storage and scorching resistance during processing and a blend and vulcanized article thereof. A sulfur-modified chloroprene elastomer composition, containing a thiuram compound in an amount of 1 to 2.5 mass % and having an organic acid content, as determined in accordance with JIS K6237, of 1.5 to 15 mass %, an ash content, as determined in accordance with JIS K6228, of 0.03 to 0.2 mass %, and a mass ratio of the organic acid content to the ash content (organic acid content/ash content) of 50 to 500, as they are so regulated by modification of the blending amount of the emulsifier.Type: ApplicationFiled: February 15, 2010Publication date: January 26, 2012Applicant: DENKI KAGAKU KOGYO KABUSHIKI KAISHAInventors: Toshiaki Miyauchi, Yasushi Abe, Toshiaki Otsu
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Patent number: 8012556Abstract: The present invention provides an acrylic rubber composition and its vulcanized product, having good vulcanization characteristics and an excellent balance between processability, mechanical properties of rubber and compression set. The acrylic rubber composition comprises a carboxyl group-containing acrylic rubber, a diazabicycloalkene compound, a polyamine compound, and a tertiary amine compound represented by the following formula (1): where each of R1, R2 and R3 is independently a substituent having at least one saturated aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon having a linear structure, a branched structure or a cyclic structure, or benzyl group.Type: GrantFiled: December 4, 2007Date of Patent: September 6, 2011Assignee: Denki Kagaku Kogyo Kabushiki KaishaInventors: Uichiro Yamagishi, Toshiaki Miyauchi, Yasushi Abe
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Publication number: 20100227095Abstract: To provide an acrylic rubber composition and a vulcanized rubber that ensure heat resistance of the vulcanized rubber, especially less changes in the elongation at break (EB) and hardness of the vulcanized rubber under heating conditions. An acrylic rubber composition comprising a carboxyl group-containing acrylic rubber and, per 100 parts by mass of the carboxyl group-containing acrylic rubber, from 10 to 100 parts by mass of carbon black, from 0.1 to 15 parts by mass of at least one primary antioxidant selected from the group consisting of an amine antioxidant and a phenolic antioxidant and from 0.1 to 15 parts by mass of at least one secondary antioxidant selected from the group consisting of a phosphorus antioxidant and a sulfur antioxidant.Type: ApplicationFiled: May 21, 2008Publication date: September 9, 2010Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Toshiaki Miyauchi, Yasushi Abe
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Publication number: 20100209644Abstract: To provide a chloroprene rubber composition with which a vulcanized rubber having further improved heat resistance without impairing mechanical properties, the compression set and the tension fatigue can be obtained, and a rubber member for an automobile, a hose, a rubber molded article and a rubber vibration insulator comprising the vulcanized rubber. A chloroprene rubber composition, which comprises 100 parts by mass of at least one chloroprene rubber selected from the group consisting of a xanthogen-modified chloroprene rubber and a mercaptan-modified chloroprene rubber, and from 15 to 200 parts by mass of carbon black having a number average particle size of from 70 nm to 600 nm and having a DBP oil absorption of from 15 ml/100 g to 60 ml/100 g by oil absorption method A of JIS K6221.Type: ApplicationFiled: September 12, 2008Publication date: August 19, 2010Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Yasushi Abe, Hiroyuki Ishiguro
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Publication number: 20100196644Abstract: To provide an acrylic rubber composition and its vulcanized product, having excellent workability and an excellent balance of the vulcanization properties, the reduction of scorching, the rubber mechanical properties, the compression set and the heat resistance. An acrylic rubber composition comprising a carboxy group-containing acrylic rubber, a novolac phenol resin salt of a diazabicycloalkene compound and a polyamine compound. Particularly, the diazabicycloalkene compound is preferably 2,3,4,6,7,8,9,10-octahydropyrimido(1,2-a)azepine or 2,3,4,6,7,8-hexahydropyrrolo(1,2-a)pyrimidine, and the polyamine compound is preferably an aromatic polyamine or an aliphatic polyamine.Type: ApplicationFiled: January 29, 2008Publication date: August 5, 2010Applicant: Denki Kagaku Kogyo Kabushiki KaishaInventors: Uichiro Yamagishi, Toshiaki Miyauchi, Yasushi Abe
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Publication number: 20100134840Abstract: A plurality of sets of a printed document for distribution to a plurality of destinations is generated. For each one of the plurality of destinations, whether to perform conceal processing to document data is determined, and destination-specific print data is generated by performing conceal processing to the document data when it is determined that conceal processing is to be performed and by adding each one of the destination identification information identifying each one of the plurality of destinations to the document data.Type: ApplicationFiled: December 2, 2009Publication date: June 3, 2010Inventor: Yasushi ABE
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Patent number: 7715055Abstract: Exemplary embodiments of the present invention provide an image processing apparatus, system, method, computer program and product, capable of generating verification data for detecting document alteration, generating a protected document embedded with the verification data, and detecting document alteration using the verification data. Other exemplary embodiments of the present invention provide an image processing apparatus, system, method, computer program and product, capable of generating verification data for detecting image alteration or document duplication, generating a protected document embedded with the verification data, and detecting image alteration or document duplication using the verification data.Type: GrantFiled: December 27, 2004Date of Patent: May 11, 2010Assignee: Ricoh Company, Ltd.Inventors: Yasushi Abe, Masaki Ishii
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Publication number: 20100009105Abstract: The present invention provides an acrylic rubber composition and its vulcanized product, having good vulcanization characteristics and an excellent balance between processability, mechanical properties of rubber and compression set. The acrylic rubber composition comprises a carboxyl group-containing acrylic rubber, a diazabicycloalkene compound, a polyamine compound, and a tertiary amine compound represented by the following formula (1): where each of R1, R2 and R3 is independently a substituent having at least one saturated aliphatic hydrocarbon or unsaturated aliphatic hydrocarbon having a linear structure, a branched structure or a cyclic structure, or benzyl group.Type: ApplicationFiled: December 4, 2007Publication date: January 14, 2010Applicant: DENKI KAGAKU KIGYO KABUSHIKI KAISHAInventors: Uichiro Yamagishi, Toshiaki Miyauchi, Yasushi Abe