Patents by Inventor Tohru Hayashi

Tohru Hayashi 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: 20210309987
    Abstract: An object of the present invention is to provide a microorganism that efficiently produces a PUFA and a method for producing a PUFA using the microorganism. The present invention relates to a microorganism capable of producing a polyunsaturated fatty acid (PUFA), in which a gene encoding an exogenous polyketide synthase dehydratase (PS-DH) domain having a higher activity against 3-hydroxyhexanoyl acyl carrier protein (3-hydroxyhexanoyl ACP) than an endogenous FabA-like ?-hydroxyacyl-ACP dehydratase (FabA-DH) domain has been introduced into a microorganism having a PUFA metabolic pathway, and the like.
    Type: Application
    Filed: August 9, 2019
    Publication date: October 7, 2021
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Tohru DAIRI, Yasuharu SATOH, Shohei HAYASHI, Yasushi OGASAWARA, Tetsuro UJIHARA
  • Publication number: 20210309960
    Abstract: An object of the present invention is to provide a microorganism that efficiently produces EPA and a method for producing EPA using the microorganism. The present invention relates to a microorganism having an ability to produce docosahexaenoic acid (DHA), wherein the microorganism contains a protein composed of an amino acid sequence in which at least one of the amino acid residues at positions 6, 65, 230, 231, and 275 in the amino acid sequence represented by SEQ ID NO: 2 has been substituted with another amino acid residue (mutated OrfB), and is capable of producing eicosapentaenoic acid (EPA), and the like.
    Type: Application
    Filed: August 9, 2019
    Publication date: October 7, 2021
    Applicant: KYOWA HAKKO BIO CO., LTD.
    Inventors: Tohru DAIRI, Yasuharu SATOH, Shohei HAYASHI, Mai NAKA, Tetsuro UJIHARA
  • Patent number: 7678207
    Abstract: We provide a steel product that includes, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and has a structure of bainite and/or martensite, the total volume fraction of bainite and martensite being 10% or more, and an induction hardened member that is made of the steel product having a hardened surface layer formed by induction hardening and has a prior austenite grain size of 12 ?m or less through the layer thickness. The member has high fatigue strength and therefore is suitable for an automobile drive shaft, an automobile constant velocity joint or the like.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: March 16, 2010
    Assignee: JFE Steel Corporation
    Inventors: Yasuhiro Omori, Tohru Hayashi, Akihiro Matsuzaki, Takaaki Toyooka
  • Publication number: 20080264524
    Abstract: A high-strength steel having excellent character of delayed fracture can be manufactured at a low cost without adding expensive alloy elements such as Ni, Co or V in large quantities. The steel including a steel microstructure in which a ratio of martensite phase is 90% or more and a diameter of prior austenite grains is 10 ?m or less, the steel microstructure being made by hardening and then tempering at 100° C. to 400° C., the steel including C: more than 0.30% and not more than 0.50% by mass, Si: not more than 1.0% by mass, Mn: not more than 1.5% by mass, Ti: not more than 0.1% by mass, Mo: not less than 0.3% and not more than 0.50% by mass, B: not less than 0.0005% and not more than 0.01% by mass, and a balance composed of Fe and inevitable impurities.
    Type: Application
    Filed: October 27, 2006
    Publication date: October 30, 2008
    Inventors: Keiichi Maruta, Tohru Hayashi, Nobutaka Kurosawa, Hideto Kimura, Takaaki Toyooka, Kazukuni Hase
  • Publication number: 20080017283
    Abstract: A steel for machine structural use with a better strength-ductility-toughness balance than maraging steel and applications thereof are provided. The steel for machine structural use with excellent strength, ductility, and toughness contains, in percent by mass, more than 0.30% to 0.5% of carbon, 1.0% or less of silicon, 1.5% or less of manganese, 0.025% or less of aluminum, 0.3% to 0.5% of molybdenum, and 0.0005% to 0.01% of boron, and the balance is iron and incidental impurities. The steel has a structure including at least 90% by volume of martensitic structure. The martensitic structure includes blocks having a size of 1.5 ?m or less. Dissolved boron is contained in an amount of at least 0.0005% and is present at boundaries of prior austenite grains in a concentration at least 1.5 times that in the prior austenite grains.
    Type: Application
    Filed: June 30, 2006
    Publication date: January 24, 2008
    Inventors: Keiichi Maruta, Tohru Hayashi, Nobutaka Kurosawa, Hideto Kimura, Takaaki Toyooka, Kazukuni Hase, Katsumi Yamada
  • Publication number: 20070163687
    Abstract: A component for machine structural use having improved fatigue strength. The component for machine structural use is produced by subjecting at least a part of a steel material to hardening, and the hardened structure is controlled such that the average grain diameter of former austenitic grains is 12 ?m or less and the maximum grain diameter does not exceed four times the average grain diameter.
    Type: Application
    Filed: February 1, 2005
    Publication date: July 19, 2007
    Inventors: Nobutaka Kurosawa, Yasuhiro Omori, Tohru Hayashi, Aklhiro Matsuzaki, Takaaki Toyooka
  • Publication number: 20070000582
    Abstract: The present invention provides a steel material for induction quenching, containing 0.3% to 0.7% of C, 1.1% or less of Si, 0.2% to 1.1% of Mn, 0.05% to 0.6% of Mo, 0.06% or less of S, 0.025% or less of P, 0.25% or less of Al, 0.3% or less of Cr on a mass basis, and the balance being Fe and unavoidable impurities. The steel material has a ferrite structure and a pearlite structure, the total volume fraction of the ferrite structure and the pearlite structure is 90% or more, the thickness of the ferrite structure is 30 ?m or less, and the average prior austenite grain diameter of a hard layer obtained by induction quenching is 12 ?m or less. Since having superior machinability and superior fatigue strength after induction quenching, this steel material is suitable, for an automobile drive shaft, constant velocity joint, and the like.
    Type: Application
    Filed: July 16, 2004
    Publication date: January 4, 2007
    Inventors: Akihiro Matsuzaki, Yasuhiro Omori, Nobutaka Kurosawa, Tohru Hayashi, Takaaki Toyooka, Katsumi Yamada
  • Publication number: 20060196583
    Abstract: The present invention provides a machine structural part composed of 0.3% to 0.7% of C, 0.30% or less of Si, 0.2% to 2.0% of Mn, 0.005% to 0.25% of Al, 0.005% to 0.1% of Ti, 0.05% to 0.6% of Mo, 0.0003% to 0.006% of B, 0.06% or less of S, 0.020% or less of P, 0.0030% or less of O on a mass basis, and the balance being Fe and unavoidable impurities. In addition, the machine structural part has a hard layer on at least a part of a surface thereof formed by induction quenching, an average prior austenite grain diameter of the hard layer is 7 ?m or less, and the maximum diameter of a non-metal inclusion composed of oxides is 15 ?m or less. Since having a high fatigue strength, this machine structural part is suitable for an automobile drive shaft, constant velocity joint, and the like.
    Type: Application
    Filed: July 16, 2004
    Publication date: September 7, 2006
    Inventors: Tohru Hayashi, Yasuhisa Omori, Nobutaka Kurosawa, Akihiro Matsuzaki, Takaaki Toyooka, Katsumi Yamada
  • Publication number: 20060162823
    Abstract: The present invention provides a steel product that consists of, by mass %, C: 0.35-0.7%, Si: 0.30-1.1%, Mn: 0.2-2.0%, Al: 0.005-0.25%, Ti: 0.005-0.1%, Mo: 0.05-0.6%, B: 0.0003-0.006%, S: 0.06% or less, P: 0.02% or less, Cr: 0.2% or less, and the balance Fe and inevitable impurities, and has a structure of bainite and/or martensite, the total volume fraction of bainite and martensite being 10% or more, and an induction hardened member that is made of the steel product having a hardened surface layer formed by induction hardening and has a prior austenite grain size of 12 ?m or less through the layer thickness. The member has high fatigue strength and therefore is suitable for an automobile drive shaft, an automobile constant velocity joint or the like.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 27, 2006
    Inventors: Yasuhiro Omori, Tohru Hayashi, Akihiro Matsuzaki, Takaaki Toyooka
  • Patent number: 6959894
    Abstract: An impact resistant structure of a helicopter having an energy absorber positioned under a floor of the helicopter and directly connected to a cabin frame of the helicopter. The energy absorber is arranged in accordance with a distribution of a ground reaction force on a general ground at a time of crash situation. The energy absorber also includes a plurality of independent hollow tubes of fiber reinforced composite material integrally formed by bundling only the hollow tubes. The hollow tubes are arranged so as to reduce a number of intersecting wall surfaces of the hollow tubes.
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: November 1, 2005
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Tohru Hayashi
  • Publication number: 20050001093
    Abstract: One aspect of the present invention provides an impact resistant structure of a helicopter, which includes: an energy absorber positioned under a floor of the helicopter and directly connected to a cabin frame of the helicopter. The energy absorber is arranged in accordance with a distribution of a ground reaction force on a general ground at a time of crash situation. Another aspect of the present invention provides an energy absorber includes: a plurality of independent hollow tubes of fiber reinforced composite material integrally formed by bundling only the hollow tubes. The hollow tubes are arranged so as to reduce a number of intersecting wall surfaces of the hollow tubes.
    Type: Application
    Filed: December 1, 2003
    Publication date: January 6, 2005
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventor: Tohru Hayashi
  • Patent number: 6572716
    Abstract: A fine ferrite-based steel is disclosed, wherein at least 60% of the ferrite grain boundary is a large angle grain boundary of at least 15°, and the mean ferrite grain size is not more than 2.5 &mgr;m. The fine ferrite-based steel of the invention has a high strength and a long fatigue life.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: June 3, 2003
    Assignee: National Research Institute for Metals
    Inventors: Tohru Hayashi, Shiro Torizuka, Kaneaki Tsuzaki, Kotobu Nagai, Osamu Umezawa
  • Publication number: 20020014285
    Abstract: A fine ferrite-based steel is disclosed, wherein at least 60% of the ferrite grain boundary is a large angle grain boundary of at least 15°, and the mean ferrite grain size is not more than 2.5 &mgr;m. The fine ferrite-based steel of the invention has a high strength and a long fatigue life.
    Type: Application
    Filed: September 21, 1998
    Publication date: February 7, 2002
    Inventors: TOHRU HAYASHI, SHIRO TORIZUKA, KANEAKI TSUZAKI, KOTOBU NAGAI, OSAMU UMEZAWA
  • Patent number: 6162389
    Abstract: A non heat-treated steel of high strength, toughness and machinability which can be used in its as-worked state without calling for any special treatment after working. It contains less than 0.05 wt % C, 0.005 to 2.0 wt % Si, 0.5 to 5.0 wt % Mn, 0.1 to 10.0 wt % Ni, more than 1.0 to 4.0 wt % Cu, 0.0002 to 1.0 wt % Al, 0.005 to 0.50 wt % S and 0.0010 to 0.0200 wt % N.
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: December 19, 2000
    Assignee: Kawasaki Steel Corporation
    Inventors: Kazukuni Hase, Takashi Iwamoto, Yasuhiro Omori, Toshiyuki Hoshino, Tohru Hayashi, Keniti Amano, Toshio Fujita
  • Patent number: 5989366
    Abstract: A method of manufacturing a thick steel product of high strength and high toughness having excellent weldability with minimal variation of material properties, comprises heating a steel raw material to the temperature of Ac.sub.3 to 1350.degree. C., hot rolling and then cooling at the cooling rate of 10.degree. C./sec. or less. The steel raw material has the following composition:C: 0.001-0.25 wt %;Mn: 1.0-3.0 wt %;Ti: 0.005-0.20 wt %;Nb: 0.005-0.20 wt %;B: 0.0003-0.0050 wt %; andAl: 0.01-0.100 wt %balance substantially Fe and incidental impurities. The composition has a transformation start temperature (Bs) of 670.degree. C. or less. Since the steel product obtained by the method has no variation in physical properties regardless of variation in cooling rate, it is possible to supply steel products of high strength and high toughness which have uniform microstructure and properties along their thickness direction and are excellent in weldability.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: November 23, 1999
    Assignee: Kawasaki Steel Corporation
    Inventors: Tohru Hayashi, Mitsuhiro Okatsu, Fumimaru Kawabata, Keniti Amano
  • Patent number: 5900076
    Abstract: This invention provides bainite steel materials having a less scattering of properties in a thickness direction or between steel materials by using a chemical composition of C: not less than 0.001 wt % but less than 0.030 wt %, Si: not more than 0.60 wt %, Mn: 1.00-3.00 wt %, Nb: 0.005-0.20 wt %, B: 0.0003-0.0050 wt % and Al: not more than 0.100 wt % and rendering not less than 90% of the material into a bainite texture in steel materials such as thick steel plates, steel sheets, section steels, rod steels and the like.
    Type: Grant
    Filed: November 28, 1997
    Date of Patent: May 4, 1999
    Assignee: Kawasaki Steel Corporation
    Inventors: Tohru Hayashi, Keniti Amano, Mitsuhiro Okatsu, Kenji Oi, Fumimaru Kawabata, Tomoya Koseki, Noritsugu Itakura, Hiroki Ota
  • Patent number: 5766381
    Abstract: This invention provides bainite steel materials having a less scattering of properties in a thickness direction or between steel materials by using a chemical composition of C: not less than 0.001 wt % but less than 0.030 wt %, Si: not more than 0.60 wt %, Mn: 1.00-3.00 wt %, Nb: 0.005-0.20 wt %, B: 0.0003-0.0050 wt % and Al: not more than 0.100 wt % and rendering not less than 90% of the material into a bainite texture in steel materials such as thick steel plates, steel sheets, section steels, rod steels and the like.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: June 16, 1998
    Assignee: Kawasaki Steel Corporation
    Inventors: Tohru Hayashi, Keniti Amano, Mitsuhiro Okatsu, Kenji Oi, Fumimaru Kawabata, Tomoya Koseki, Noritsugu Itakura, Hiroki Ota
  • Patent number: 4903156
    Abstract: A magnetic recording and/or reproducing apparatus comprises a first magnetic head mounted on a carriage and a second magnetic head mounted on an arm which swings to and from the carriage, for engagement with a first and second side respectively of a flexible magnetic disc. The first and second magnetic heads are mounted on the carriage and the arm respectively via first and second gimbal plates. The elastic modules of the first gimbal plate is chosen such that the resonance of the first and second magnetic heads due to external vibration is avoided.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: February 20, 1990
    Assignee: TEAC Corporation
    Inventors: Tohru Hayashi, Yoshiaki Sakai, Shinichi Aikawa, Hiroshi Matsunaga, Jun Makabe