Patents by Inventor Teruo Saito
Teruo Saito 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: 20150291129Abstract: An information processing system of the present invention includes: a mobile wireless device including a first wireless communicating means; a wireless authentication device; and a distance acquiring means for acquiring distance information representing a distance between the mobile wireless device and the wireless authentication device. The second wireless communicating means transmits an authentication information request to the mobile wireless device. The first wireless communicating means receives the authentication information request and transmits the authentication information to the wireless authentication device. The second wireless communicating means receives the authentication information.Type: ApplicationFiled: January 29, 2013Publication date: October 15, 2015Inventor: Teruo Saito
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Publication number: 20140328482Abstract: An encryption evaluation device 100 is a device evaluating the security of a block cipher encrypting data of a predetermined size for each block by repeatedly executing, a predetermined number of rounds, a round process using a round function converting data based on a key. The encryption evaluation device 100 includes: a structure specification information accepting part 101 configured to accept structure specification information for specifying a structure of the block cipher; and a security index value calculating part 102 configured to specify a non-use number as the number of round functions that are not used in meet-in-the-middle attack, based on the accepted structure specification information, and calculate a security index value indicating a calculation amount required to specify the key by performing the meet-in-the-middle attack, based on the specified non-use number.Type: ApplicationFiled: September 18, 2012Publication date: November 6, 2014Applicant: NEC SOFTWARE HOKURIKU, LTD.Inventor: Teruo Saito
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Patent number: 8619976Abstract: An encryption/decryption method comprises by using a generalized Feistel structure in which data is divided into n pieces and mixing processing with key data is performed, diffusion processing, in which data transformation via linear operation is executed, is performed at least once between rounds of the generalized Feistel structure, wherein. As the diffusion processing, linear transformation is performed in which each of n pieces of output data is operated on by two or more pieces of input data. The method is adapted for encryption or decryption.Type: GrantFiled: December 11, 2008Date of Patent: December 31, 2013Assignees: NEC Corporation, NEC Software Hokuriku, Ltd.Inventors: Tomoyasu Suzaki, Yukiyasu Tsunoo, Hiroyasu Kubo, Maki Shigeri, Teruo Saito, Takeshi Kawabata, Hiroki Nakashima
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Patent number: 8374351Abstract: Disclosed is an encryption device for generating a pseudo-random number based on a secret key and generates an encrypted text by applying the pseudo-random number sequence to a plain text, uses, an internal state in accordance with a state based on a permutation of a sequence of a finite number of numeric values, as an internal state used for generation of the pseudo-random number sequence, executes a predetermined leftward or rightward rotate shift, depending on a number smaller than an internal state number, based on the result of linear or non-linear, or combination of linear and non-linear using one or more numeric values of the internal state and sets at least one temporary variable used for generation of the pseudo-random number sequence to be a temporary variable having as a value a result of the execution of the predetermined leftward or rightward rotate shift, and generates the pseudo-random number by a predetermined prescribed operation on one or a plurality of numeric values of the internal state aType: GrantFiled: July 11, 2007Date of Patent: February 12, 2013Assignee: NEC CorporationInventors: Yukiyasu Tsunoo, Teruo Saito, Hiroyasu Kubo, Tomoyasu Suzaki
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Publication number: 20110110519Abstract: A data transmission device (100) performs encryption processing on transmission data, performs encryption processing of a Feistel structure on the obtained first converted data, and performs processing in the relationship of an inverse function with the first encryption processing on the obtained second converted data. A first converting unit (105) divides transmission data into N sets (N being three or greater) of divided transmission data, performs operation processing on the divided transmission data to generate at least N sets of operation processing data, and combines the generated N sets of operation processing data to generate the first converted data.Type: ApplicationFiled: January 9, 2009Publication date: May 12, 2011Inventors: Tomoyasu Suzaki, Yukiyasu Tsunoo, Hiroyasu Kubo, Maki Shigeri, Teruo Saito, Takeshi Kawabata, Hiroki Nakashima
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Publication number: 20100266122Abstract: An encryption/decryption method comprises by using a generalized Feistel structure in which data is divided into n pieces and mixing processing with key data is performed, diffusion processing, in which data transformation via linear operation is executed, is performed at least once between rounds of the generalized Feistel structure, wherein. As the diffusion processing, linear transformation is performed in which each of n pieces of output data is operated on by two or more pieces of input data. The method is adapted for encryption or decryption.Type: ApplicationFiled: December 11, 2008Publication date: October 21, 2010Applicants: NEC CORPORATION, NEC SOFTWARE HOKURIKU, LTD.Inventors: Tomoyasu Suzaki, Yukiyasu Tsunoo, Hiroyasu Kubo, Maki Shigeri, Teruo Saito, Takeshi Kawabata, Hiroki Nakashima
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Publication number: 20100128870Abstract: A pseudorandom number generation apparatus used for a stream cipher comprises at least one internal state, a non-linear conversion means that updates numeric data saved in the internal state, and a transposition means that performs only bit transposition for the numeric data, updated by the non-linear conversion means, based on a predefined rule.Type: ApplicationFiled: March 25, 2008Publication date: May 27, 2010Inventors: Yukiyasu Tsunoo, Hiroyasu Kubo, Tomoyasu Suzaki, Teruo Saito, Hiroki Nakashima
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Patent number: 7667072Abstract: An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Type: GrantFiled: April 23, 2008Date of Patent: February 23, 2010Assignee: Mitsubishi Chemical CorporationInventors: Shuhei Yada, Hirochika Hosaka, Teruo Saito, Yoshiro Suzuki
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Publication number: 20090323956Abstract: Disclosed is an encryption device for generating a pseudo-random number based on a secret key and generates an encrypted text by applying the pseudo-random number sequence to a plain text, uses, an internal state in accordance with a state based on a permutation of a sequence of a finite number of numeric values, as an internal state used for generation of the pseudo-random number sequence, executes a predetermined leftward or rightward rotate shift, depending on a number smaller than an internal state number, based on the result of linear or non-linear, or combination of linear and non-linear using one or more numeric values of the internal state and sets at least one temporary variable used for generation of the pseudo-random number sequence to be a temporary variable having as a value a result of the execution of the predetermined leftward or rightward rotate shift, and generates the pseudo-random number by a predetermined prescribed operation on one or a plurality of numeric values of the internal state aType: ApplicationFiled: July 11, 2007Publication date: December 31, 2009Inventors: Yukiyasu Tsunoo, Teruo Saito, Hiroyasu Kubo, Tomoyasu Suzaki
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Patent number: 7528281Abstract: An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Type: GrantFiled: June 10, 2004Date of Patent: May 5, 2009Assignee: Mitsubishi Chemical CorporationInventors: Shuhei Yada, Hirochika Hosaka, Kimikatsu Jinno, Teruo Saito
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Publication number: 20080253943Abstract: An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Type: ApplicationFiled: April 23, 2008Publication date: October 16, 2008Inventors: Shuhei Yoda, Masayasu Goriki, Hirochika Hosaka, Kimikatsu Jinno, Teruo Saito, Yoshiro Suzuki
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Publication number: 20080234522Abstract: An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Type: ApplicationFiled: April 23, 2008Publication date: September 25, 2008Inventors: Shuhei Yada, Masayasu Goriki, Hirochika Hosaka, Kimikatsu Jinno, Teruo Saito, Yoshiro Suzuki
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Patent number: 7288156Abstract: The invention provides a water supplying apparatus and method thereof which has a high capacity of peeling and removing a disused material such as a resist film and the like, and can efficiently use water vapor. A water supplying apparatus for executing a washing process, a cleaning process and a working process of a subject, is provided with a water vapor body supplying means for supplying a water vapor body, and a water mist body supplying means for supplying a water mist body containing liquid water fine particles, and the structure is made such that said water vapor body and said water mist body are supplied to the subject by independently controlling said two means.Type: GrantFiled: January 10, 2006Date of Patent: October 30, 2007Assignee: Lam Research CorporationInventors: Yoichi Isago, Kazuo Nojiri, Naoaki Kobayashi, Teruo Saito, Shu Nakajima
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Patent number: 7147011Abstract: A method for packing a solid catalyst is provided, whereby the pressure loss of a reaction tube packed with the catalyst can be reduced. The method is characterized in that prior to packing a solid catalyst in a reactor, the solid catalyst is sieved to remove a cracked catalyst. For example, sieving is carried out against a solid catalyst of a columnar or cylindrical shape having an outer diameter A being larger than the length B in the axial direction by using a sieve having a sieve mesh with a width C satisfying the condition of A>C>B and a length being at least the width, or against a solid catalyst of a columnar or cylindrical shape with an outer diameter A being from 1 to 0.5 time the length B in the axial direction by using a sieve having a sieve mesh with a width C satisfying the condition of A>C>0.5B and a length being at least the width.Type: GrantFiled: January 31, 2005Date of Patent: December 12, 2006Assignee: Mitsubishi Chemical CorporationInventors: Kazuharu Tazawa, Isao Teshigahara, Teruo Saito
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Publication number: 20060112974Abstract: The invention provides a water supplying apparatus and method thereof which has a high capacity of peeling and removing a disused material such as a resist film and the like, and can efficiently use water vapor. A water supplying apparatus for executing a washing process, a cleaning process and a working process of a subject, is provided with a water vapor body supplying means for supplying a water vapor body, and a water mist body supplying means for supplying a water mist body containing liquid water fine particles, and the structure is made such that said water vapor body and said water mist body are supplied to the subject by independently controlling said two means.Type: ApplicationFiled: January 10, 2006Publication date: June 1, 2006Inventors: Yoichi Isago, Kazuo Nojiri, Naoaki Kobayashi, Teruo Saito, Shu Nakajima
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Patent number: 7004181Abstract: The invention provides a water supplying apparatus and method thereof which has a high capacity of peeling and removing a disused material such as a resist film and the like, and can efficiently use water vapor. A water supplying apparatus for executing a washing process, a cleaning process and a working process of a subject, is provided with a water vapor body supplying means for supplying a water vapor body, and a water mist body supplying means for supplying a water mist body containing liquid water fine particles, and the structure is made such that said water vapor body and said water mist body are supplied to the subject by independently controlling said two means.Type: GrantFiled: August 27, 2002Date of Patent: February 28, 2006Assignee: Lam Research CorporationInventors: Yoichi Isago, Kazuo Nojiri, Naoaki Kobayashi, Teruo Saito, Shu Nakajima
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Publication number: 20050161373Abstract: A method for packing a solid catalyst is provided, whereby the pressure loss of a reaction tube packed with the catalyst can be reduced. The method is characterized in that prior to packing a solid catalyst in a reactor, the solid catalyst is sieved to remove a cracked catalyst. For example, sieving is carried out against a solid catalyst of a columnar or cylindrical shape having an outer diameter A being larger than the length B in the axial direction by using a sieve having a sieve mesh with a width C satisfying the condition of A>C>B and a length being at least the width, or against a solid catalyst of a columnar or cylindrical shape with an outer diameter A being from 1 to 0.5 time the length B in the axial direction by using a sieve having a sieve mesh with a width C satisfying the condition of A>C>0.5B and a length being at least the width.Type: ApplicationFiled: January 31, 2005Publication date: July 28, 2005Applicant: MITSUBISHI CHEMICAL CORPORATIONInventors: Kazuharu Tazawa, Isao Teshigahara, Teruo Saito
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Publication number: 20040250868Abstract: An object of the present invention is to provide a method for vapor phase catalytic oxidation which is almost free of variations in reaction states in respective reaction tubes of the fixed bed multi-tube heat-exchanger type reactor.Type: ApplicationFiled: June 10, 2004Publication date: December 16, 2004Inventors: Shuhei Yada, Masayasu Goriki, Hirochika Hosaka, Kimikatsu Jinno, Teruo Saito, Yoshiro Suzuki
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Patent number: 6585461Abstract: This invention aims at avoiding interference of a blade when a plurality of grooves of a diffraction grating element are formed. In order to achieve this object, in a method of working a diffraction optical grating element shape on a working target surface, a main spindle for rotatably supporting a cutting blade is provided on X-, Y-, and Z-coordinate axes of the working target surface, and an angle of an edge of the cutting blade mounted on the main spindle performs working to have an inclination with such an angle that interference with a planned working position at an outer peripheral portion of a curved surface of the diffraction optical grating element is avoided.Type: GrantFiled: June 29, 2000Date of Patent: July 1, 2003Assignee: Canon Kabushiki KaishaInventor: Teruo Saito
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Patent number: 6576409Abstract: A photosensitive resin composition and a method of forming a positive resist pattern by the use of the composition are disclosed. The photosensitive resin composition comprises (A) a resinous compound containing an acid-decomposing ester group, (B) a compound containing one ethylenically unsaturated bond in its molecule and possessing a group capable of forming a carboxylic acid via decomposition by the action of an acid, (C) a photo-acid generator, (D) a photo-radical polymerization initiator, and optionally (E) an epoxy resin.Type: GrantFiled: January 14, 2002Date of Patent: June 10, 2003Assignee: Taiyo Ink Manufacturing Co., Ltd.Inventors: Miyako Ichikawa, Masaki Sasaki, Teruo Saito