Patents by Inventor Susumu Saito

Susumu 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).

  • Publication number: 20120302792
    Abstract: The present invention is directed to a process of making ?-aminooxyketone and ?-hydroxyketone compounds. The synthetic pathway generally involves reacting an aldehyde or ketone substrate and a nitroso substrate in the presence of a catalyst of the formula (IV): wherein Xa-Xc represent independently nitrogen, carbon, oxygen or sulfur and Z represents a 4 to 10-membered ring with or without a substituent and optionally a further step to convert the ?-aminooxyketone compound formed to the ?-hydroxyketone compound. The present invention results in ?-aminooxyketone and ?-hydroxyketone compounds with high enantioselectivity and high purity. The present invention is also directed to a catalytic asymmetric O-nitroso Aldol/Michael reaction. The substrates of this reaction are generally cyclic ?,?-unsaturated ketone substrate and a nitroso substrate.
    Type: Application
    Filed: August 3, 2012
    Publication date: November 29, 2012
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: NORIE MOMIYAMA, HIROMI TORII, SUSUMU SAITO, HISASHI YAMAMOTO, YUHEI YAMAMOTO
  • Patent number: 8252941
    Abstract: The present invention is directed to a process of making ?-aminooxyketone and ?-hydroxyketone compounds. The synthetic pathway generally involves reacting an aldehyde or ketone substrate and a nitroso substrate in the presence of a catalyst of the formula (IV): wherein Xa—Xc represent independently nitrogen, carbon, oxygen or sulfur and Z represents a 4 to 10-membered ring with or without a substituent and optionally a further step to convert the ?-aminooxyketone compound formed to the ?-hydroxyketone compound. The present invention results in ?-aminooxyketone and ?-hydroxyketone compounds with high enantioselectivity and high purity. The present invention is also directed to a catalytic asymmetric O-nitroso Aldol/Michael reaction. The substrates of this reaction are generally cyclic ?,?-unsaturated ketone substrate and a nitroso substrate.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: August 28, 2012
    Assignee: Japan Science and Technology Agency
    Inventors: Norie Momiyama, Hiromi Torii, Susumu Saito, Hisashi Yamamoto, Yuhei Yamamoto
  • Patent number: 8198394
    Abstract: A membrane-electrode assembly for polymer electrolyte fuel cells which is excellent in water repellency and gas diffusivity and which exhibits a high output power density, can be obtained by using, as an electrolyte material for polymer electrolyte fuel cells, a fluoropolymer obtained by contacting a fluoropolymer which is excellent in gas diffusivity and which has alicyclic structures in its main chain and further has sulfonic acid groups, with fluorine gas for fluorination to increase water repellency and stabilize the molecule ends.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: June 12, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Jun-ichi Tayanagi, Atsushi Watakabe, Susumu Saito, Katsuya Ueno
  • Patent number: 8182951
    Abstract: To provide a fuel cell system provided with a polymer electrolyte fuel cell which is excellent in the power generation characteristics under high temperature and low or no humidity conditions. A fuel cell system 20 comprising a polymer electrolyte fuel cell 22 having a membrane/electrode assembly 10 having a catalyst layer containing a polymer (H) which has repeating units based on a perfluoromonomer having an alicyclic structure and has ion exchange groups, a temperature controlling means for controlling temperature of the polymer electrolyte fuel cell 22, a temperature sensor 38 for detecting temperature of the polymer electrolyte fuel cell 22, and a controlling device 40 for controlling the temperature controlling means based on temperature information from the temperature sensor 38 so that the maximum temperature of the polymer electrolyte fuel cell 22 becomes within the range of from 90 to 140° C.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: May 22, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Satoru Hommura, Susumu Saito, Tetsuji Shimohira, Atsushi Watakabe, Junichi Tayanagi
  • Patent number: 8178257
    Abstract: A membrane/electrode assembly for a polymer electrolyte fuel cell capable of exhibiting high power generation performance constantly for a long period of time in a high temperature and low humidity environment, and a polymer electrolyte membrane whereby such a membrane/electrode assembly is obtainable. A polymer electrode membrane 15, comprising a proton conductive polymer which has an electrical conductivity of at least 0.07 S/cm at a temperature of 80° C. at a relative humidity of 40% and which has a water content of less than 15 mass; and a membrane/electrode assembly 10 comprising an anode 13 and a cathode 14 each having a catalyst layer 11, and a polymer electrolyte membrane 15 disposed between the anode 13 and the cathode 14.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: May 15, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Satoru Hommura, Tetsuji Shimohira, Takashi Saeki, Susumu Saito
  • Patent number: 8124295
    Abstract: A polymer electrolyte membrane made of a polymer has a low electrical resistance, high heat resistance and is strong against repeats of swelling and shrinkage. Thus, a membrane/electrode assembly for polymer electrolyte fuel cells having high power generation performance and excellent in durability can be provided. For a polymer electrolyte membrane 15 or for a catalyst layer 11 constituting electrodes 13 and 14, a polymer comprising units (U1) and units (U2) is used: Q1, Q2: a perfluoroalkylene group which may have —O— or the like; Rf1, Rf2: a perfluoroalkyl group which may have —O—; X: an oxygen atom or the like; a: 0 or the like; Y, Z: a fluorine atom, or a monovalent perfluoroorganic group such as —CF3; S: 0 to 1; and t: 0 to 3.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: February 28, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Tetsuji Shimohira, Kazuo Hamazaki, Susumu Saito, Satoru Hommura, Seigo Kotera
  • Publication number: 20120046498
    Abstract: The present invention is a method for producing a polyhydric phenol, including the following steps (a) to (d): (a) a first step of producing (4S,5R,6S)-4,5,6-trihydroxy-2-cyclohexcene-1-one from 2-deoxy-scyllo-inosose by a dehydration reaction; (b) a second step of producing 1,2,4-trihydroxybenzene from the (4S,5R,6S)-4,5,6-trihydroxy-2-cyclohexene-1-one obtained in the first step by a dehydration reaction; (c) a third step of producing 4-hydroxycyclohexane-1,3-dione from the 1,2,4-trihydroxybenzene by a catalytic hydrogenation reaction with the use of a metal catalyst; and (d) a fourth step of producing hydroquinone by heating the 4-hydroxycyclohexane-1,3-dione.
    Type: Application
    Filed: April 27, 2010
    Publication date: February 23, 2012
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Hideo Kitagawa, Junya Kiyosu, Susumu Saito, Takaomi Hayashi, Naritoshi Yoshimura, Aya Nakagawa
  • Patent number: 8097383
    Abstract: To provide a polymer electrolyte material for polymer electrolyte fuel cells, which is an electrolyte material having a high ion exchange capacity and a low resistance, and which has a higher softening temperature than a conventional electrolyte material.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: January 17, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Isamu Kaneko, Tetsuji Shimohira, Atsushi Watakabe, Seigo Kotera, Satoru Hommura, Koichi Murata, Jyunichi Tayanagi, Susumu Saito
  • Patent number: 8017257
    Abstract: A polymer electrolyte membrane made of a polymer having a low electrical resistance, high heat resistance and is strong against repeats of swelling and shrinkage. Thus, a membrane/electrode assembly for polymer electrolyte fuel cells having high power generation performance and excellent in durability can be provided.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: September 13, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Tetsuji Shimohira, Kazuo Hamazaki, Susumu Saito, Satoru Hommura, Seigo Kotera
  • Publication number: 20110217796
    Abstract: An etching method capable of controlling the film thickness of a hard mask layer uniformly is provided. A plasma etching is performed on a native oxide film by using an etching gas containing, for example, CF4 and Ar while a thickness of a silicon nitride film is being monitored and the etching is finished when the thickness of the silicon nitride film reaches a predetermined value. Then, a plasma etching is performed on a silicon substrate by employing an etching gas containing, for example, Cl2, HBr and Ar and using the silicon nitride film as a mask while a depth of a trench is being monitored and the etching is finished when the depth of the trench reaches a specified value.
    Type: Application
    Filed: May 13, 2011
    Publication date: September 8, 2011
    Applicant: TOKYO ELECTRON LIMTED
    Inventors: Susumu Saito, Akitaka Shimizu
  • Patent number: 8014891
    Abstract: An etching amount calculating method that can stably and accurately calculate the amount of etching even if a disturbance is added. Superposed interference light resulting from superposition of interference light of reflected light from a mask film and reflected light from the bottom of a concave portion on other interference light is received. A waveform in a predetermined time period is extracted from a superposed interference wave calculated from the superposed interference light. The period of an interference wave of the reflected light from the mask film and the reflected light from the bottom is detected from the distribution of frequencies of the extracted waveform. The steps described above are repeated while shifting the predetermined time period by a predetermined time, and the detected periods are integrated and averaged at each repetition. The etching amount of the concave portion is calculated based on the integrated and averaged periods.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: September 6, 2011
    Assignee: Tokyo Electron Limited
    Inventor: Susumu Saito
  • Patent number: 8013193
    Abstract: Disclosed is a method for producing an alcohol from a lactone or a carboxylic acid ester, which enables to produce an alcohol from a lactone or a carboxylic acid ester under relatively mild conditions with high yield and high catalytic efficiency. This method also enables to produce an optically active alcohol from an optically active lactone or an optically active carboxylic acid ester. Specifically disclosed is a method for producing an alcohol by hydrogen reducing a lactone or a carboxylic acid ester in the presence of a catalyst containing ruthenium and a phosphine compound represented by the following general formula (1): wherein R1 represents a spacer; R2, R3, R4, R5, R6 and R7 independently represent a hydrogen atom, an alkyl group having 1-12 carbon atoms, an aryl group or a heterocyclic group; and R8, R9, R10, R11, R12 and R13 independently represent an alkyl group having 1-12 carbon atoms, an aryl group or a heterocyclic group.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: September 6, 2011
    Assignees: Kaneka Corporation, Takasago International Corporation
    Inventors: Hirofumi Maeda, Kenji Inoue, Takaji Matsumoto, Izuru Nagasaki, Ryoji Noyori, Susumu Saito
  • Patent number: 7965487
    Abstract: A neutralization apparatus comprising an ion generation element employing a novel, high efficiency discharge system capable of generating high concentration ions with a low ozone concentration. In the neutralization apparatus, the ion generation element is a minute electrode ion generation element consisting of a discharge electrode and an induction electrode having minute protrusions arranged in one direction on a plane, and a thin dielectric film sandwiched between them.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: June 21, 2011
    Assignees: FISA Corporation, National Institute of Advanced Industrial Science and Technology
    Inventors: Takafumi Seto, Makoto Hirasawa, Masaaki Tsuji, Akira Okuyama, Susumu Saito
  • Publication number: 20110071272
    Abstract: A fluorosulfonyl group-containing monomer having a high polymerization reactivity and plural fluorosulfonyl groups, a fluorosulfonyl group-containing polymer and a sulfonic acid group-containing polymer, obtained by using the monomer.
    Type: Application
    Filed: November 29, 2010
    Publication date: March 24, 2011
    Applicant: Asahi Glass Company, Limited
    Inventors: Atsushi WATAKABE, Hiromasa Yamamoto, Masao Iwaya, Susumu Saito
  • Publication number: 20110027687
    Abstract: It is to provide a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions; and an electrolyte material having a low water content, suitable for a catalyst layer of a membrane/electrode assembly. It is to use an electrolyte material, which comprises a polymer (H) having ion exchange groups converted from precursor groups in a polymer (F), the polymer (F) having repeating units (A) based on a perfluoromonomer having a precursor group of an ion exchange group and a 5-membered ring to which the precursor group is bonded and repeating units (B) represented by the formula (u2), and having an intrinsic viscosity of at least 2.3 dL/g. wherein R1 to R4 are a fluorine atom, a C1-6 perfluoroalkyl group or the like.
    Type: Application
    Filed: July 14, 2010
    Publication date: February 3, 2011
    Applicant: Asahi Glass Company, Limited
    Inventors: Satoru HOMMURA, Susumu Saito, Tetsuji Shimohira, Atsushi Watakabe
  • Publication number: 20110027677
    Abstract: To provide a fuel cell system provided with a polymer electrolyte fuel cell which is excellent in the power generation characteristics under high temperature and low or no humidity conditions. A fuel cell system 20 comprising a polymer electrolyte fuel cell 22 having a membrane/electrode assembly 10 having a catalyst layer containing a polymer (H) which has repeating units based on a perfluoromonomer having an alicyclic structure and has ion exchange groups, a temperature controlling means for controlling temperature of the polymer electrolyte fuel cell 22, a temperature sensor 38 for detecting temperature of the polymer electrolyte fuel cell 22, and a controlling device 40 for controlling the temperature controlling means based on temperature information from the temperature sensor 38 so that the maximum temperature of the polymer electrolyte fuel cell 22 becomes within the range of from 90 to 140° C.
    Type: Application
    Filed: July 1, 2010
    Publication date: February 3, 2011
    Applicant: Asahi Glass Company, Limited
    Inventors: Satoru HOMMURA, Susumu SAITO, Tetsuji SHIMOHIRA, Atsushi WATAKABE, Junichi TAYANAGI
  • Publication number: 20110027688
    Abstract: It is to provide a membrane/electrode assembly excellent in the power generation characteristics under low or no humidity conditions and under high humidity conditions, and an electrolyte material suitable for a catalyst layer of the membrane/electrode assembly. It is to use an electrolyte material, which comprises a polymer (H) having ion exchange groups converted from precursor groups in a polymer (F) having repeating units (A) having a precursor group represented by the formula (g1) and repeating units (B) based on a perfluoromonomer having a 5-membered ring, and having a density of at most 2.03 g/cm3, the polymer (H) having an ion exchange capacity of from 1.3 to 2.3 meq/g dry resin: wherein Q1 and Q2 are a perfluoroalkylene group having an etheric oxygen atom, or the like, and Y is F or the like.
    Type: Application
    Filed: July 26, 2010
    Publication date: February 3, 2011
    Applicant: Asahi Glass Company, Limited
    Inventors: Satoru Hommura, Susumu Saito, Tetsuji Shimohira, Atsushi Watakabe
  • Patent number: 7872123
    Abstract: The present invention is directed to a process of making ?-aminooxyketone and ?-hydroxyketone compounds. The synthetic pathway involves reacting an aldehyde or ketone substrate and a nitroso substrate in the presence of a catalyst of the formula (IV): wherein Xa-Xc represent independently nitrogen, carbon, oxygen or sulfur and Z represents a 4 to 10-membered ring with or without a substituent and optionally a further step to convert the ?-aminooxyketone compound formed to the ?-hydroxyketone compound which results in ?-aminooxyketone and ?-hydroxyketone compounds with high enantioselectivity and high purity. The present invention is also directed to a catalytic asymmetric O-nitroso Aldol/Michael reaction involving a cyclic ?,?-unsaturated ketone substrate and a nitroso substrate. This methodology involves reacting the cyclic ?,?-unsaturated ketone substrate and the nitroso substrate in the presence of a proline-based catalyst, to provide a heterocyclic product.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: January 18, 2011
    Assignee: Japan Science And Technology Agency
    Inventors: Norie Momiyama, Hiromi Torii, Susumu Saito, Hisashi Yamamoto, Yuhei Yamamoto
  • Patent number: 7871532
    Abstract: A plasma processing method for performing a plasma process on a target object placed in a chamber includes a first plasma process of turning a gas containing at least a halogen element into plasma to generate first plasma, thereby processing the target object; a second plasma process, subsequent to the first plasma process, of supplying a gas containing oxygen into the chamber to generate second plasma, thereby processing the chamber and the target object; and a third plasma process, subsequent to the second plasma process, of turning a gas containing at least fluorine into plasma to generate third plasma, thereby processing the target object.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: January 18, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Akitaka Shimizu, Kosuke Ogasawara, Susumu Saito
  • Patent number: RE43652
    Abstract: In a substrate processing control method, a first process acquires a first-reflectance-spectrum of a beam reflected from the first-fine-structure and a second-reflectance-spectrum of a beam reflected from the second-fine-structure for each of varying-pattern-dimensions of the first-fine-structure when the pattern-dimension of the first-fine-structure is varied. A second process acquires reference-spectrum-data for each of the varying-pattern-dimensions of the first-fine-structure by overlapping the first-reflectance-spectrum with the second-reflectance-spectrum. A third process actually measures beams reflected from the first and the second-fine-structure, respectively, after irradiating light beam on to the substrate and acquiring reflectance-spectrums of the actual-measured beams as actual-measured spectrum data.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: September 11, 2012
    Assignee: Tokyo Electron Limited
    Inventors: Susumu Saito, Akitaka Shimizu