Patents by Inventor Yasuhiko Fujii

Yasuhiko Fujii 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: 20160039128
    Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which can provide a bonded magnet molded product capable of realizing a high magnetic force and a complicated multipolar waveform owing to such a feature that the ferrite particles are readily and highly oriented against an external magnetic field in a flowing resin upon injection molding, as well as a bonded magnet molded product obtained by injection-molding the above composition. According to the present invention, there are provided ferrite particles for bonded magnets which have a crystallite size of not less than 500 nm as measured in an oriented state by XRD, and an average particle diameter of not less than 1.30 ?m as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the composition.
    Type: Application
    Filed: April 1, 2014
    Publication date: February 11, 2016
    Inventors: Yasushi NISHIO, Yasuhiko FUJII, Hiromitsu SAKURAI
  • Patent number: 9249033
    Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which exhibit a good moldability, in particular, a good mechanical strength even when rapidly quenched upon injection-cooling, and is capable of producing a bonded magnet molded product having excellent magnetic properties, as well as a bonded magnet molded product such as a magnet roll using the ferrite particles and the resin composition. There are provided ferrite particles for bonded magnets which comprise phosphorus adsorbed and/or incorporated in ferrite, in which a content of the phosphorus in the ferrite is 120 to 5000 mg/kg (0.012 to 0.50% by weight) in terms of P; a resin composition for bonded magnets; and a magnet roll.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 2, 2016
    Assignee: TODA KOGYO CORPORATION
    Inventors: Yasuhiko Fujii, Yasushi Nishio, Kazuhisa Kanefuji, Tatsuya Ishida, Shigeru Takaragi
  • Publication number: 20150041702
    Abstract: The present invention relates to ferrite particles for bonded magnets having a bulk density of not more than 0.75 g/cm3 and a degree of compaction of not less than 65%, a resin composition for bonded magnets using the ferrite particles and the composition, and a rotor. The ferrite particles for bonded magnets and the resin composition for bonded magnets according to the present invention are capable of providing a bonded magnet molded product having a good tensile elongation and an excellent magnetic properties.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 12, 2015
    Inventors: Yasushi Nishio, Hiromitsu Sakurai, Norihiro Fukushina, Yasuhiko Fujii
  • Publication number: 20140225023
    Abstract: The present invention relates to ferrite particles for bonded magnet, having a volume-average particle diameter of 2.1 to 2.7 ?m and a particle diameter ×90 of 4.3 to 5.4 ?m wherein the ×90 represents a particle diameter at which a cumulative percentage of particles under sieve (undersize particles) based on a volume thereof is 90%, when determined from a particle size distribution thereof measured by using a laser diffraction type particle size distribution measuring apparatus.
    Type: Application
    Filed: April 18, 2014
    Publication date: August 14, 2014
    Applicant: TODA KOGYO CORPORATION
    Inventors: Yasuhiko FUJII, Minoru OHSUGI, Yasushi NISHIO, Yosuke KOYAMA, Shigeru TAKARAGI
  • Patent number: 8741170
    Abstract: The present invention relates to ferrite particles for bonded magnet, having a volume-average particle diameter of 2.1 to 2.7 ?m and a particle diameter x90 of 4.3 to 5.4 ?m wherein the x90 represents a particle diameter at which a cumulative percentage of particles under sieve (undersize particles) based on a volume thereof is 90%, when determined from a particle size distribution thereof measured by using a laser diffraction type particle size distribution measuring apparatus.
    Type: Grant
    Filed: October 2, 2009
    Date of Patent: June 3, 2014
    Assignee: Toda Kogyo Corporation
    Inventors: Yasuhiko Fujii, Minoru Ohsugi, Yasushi Nishio, Yosuke Koyama, Shigeru Takaragi
  • Patent number: 8546475
    Abstract: The present invention provides an inexpensive infrared reflecting black pigment which comprises Fe and Mn but comprises no harmful elements, and exhibits an excellent infrared reflecting property. The infrared reflecting black pigment according to the present invention comprises a compound comprising Fe, Mn and at least one element selected from the group consisting of Mg, Al, Ca, Si, Sr and Ba, and has a blackness (L* value) of not more than 30 and a solar radiation reflectance of not less than 15%.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: October 1, 2013
    Assignee: Toda Kogyo Corporation
    Inventors: Shinsuke Maruyama, Kazushi Nishimoto, Hiroshi Akai, Kazutoshi Sanada, Yasuhiko Fujii
  • Publication number: 20130172317
    Abstract: The present invention provides novel compounds having a P2X3 and/or P2X2/3 receptor antagonistic effect. A pharmaceutical composition having an analgesic effect or an improving effect of urination disorder comprising a compound of the formula (I): wherein Rh and Rj are taken together to form a bond; Ra and Rb and/or Rd and Re are taken together to form oxo or the like; Rc is hydrogen, substituted or unsubstituted alkyl or the like; Rf is —(CR4aR4b)n—R2; R4a and R4b are hydrogen, substituted or unsubstituted alkyl or the like; R2 is substituted or unsubstituted cycloalkyl or the like; n is an integer of 1 to 4; —Rg is —X—R3; —X— is —O—, —S— or the like; R3 is substituted or unsubstituted cycloalkyl or the like, or its pharmaceutically acceptable salt or a solvate thereof.
    Type: Application
    Filed: August 9, 2011
    Publication date: July 4, 2013
    Inventors: Hiroyuki Kai, Takayuki Kameyama, Tohru Horiguchi, Kentaro Asahi, Takeshi Endoh, Yasuhiko Fujii, Takuya Shintani, Ken'ichiroh Nakamura, Sae Jikihara, Tsuyoshi Hasegawa, Miho Oohara, Yukio Tada, Toshikatsu Maki, Akira Iida
  • Publication number: 20120270986
    Abstract: The present invention provides an inexpensive infrared reflecting black pigment which comprises Fe and Mn but comprises no harmful elements, and exhibits an excellent infrared reflecting property. The infrared reflecting black pigment according to the present invention comprises a compound comprising Fe, Mn and at least one element selected from the group consisting of Mg, Al, Ca, Si, Sr and Ba, and has a blackness (L* value) of not more than 30 and a solar radiation reflectance of not less than 15%.
    Type: Application
    Filed: November 9, 2010
    Publication date: October 25, 2012
    Inventors: Shinsuke Maruyama, Kazushi Nishimoto, Hiroshi Akai, Kazutoshi Sanada, Yasuhiko Fujii
  • Publication number: 20120208813
    Abstract: The present invention provides compounds having an agonistic activity to the cannabinoid receptor, which is represented by the formula (I): wherein R1, R2, R3, R4, and G are defined as herein, a pharmaceutically acceptable salt or a solvate thereof, and pharmaceutical compositions, atopic dermatitis treating agents, and anti-pruritus agents, especially anti-pruritus agents for oral used and for external application, which each contains the said compound as an active ingredient.
    Type: Application
    Filed: February 28, 2012
    Publication date: August 16, 2012
    Inventors: Natsuki ISHIZUKA, Takashi SASATANI, Yoshiharu HIRAMATSU, Masanao INAGAKI, Masahide ODAN, Hiroshi HASHIZUMI, Susumu MITSUMORI, Yasuhiko FUJII, Yoshikazu FUKUI, Hideaki WATANABE, Jun SATO
  • Patent number: 8178681
    Abstract: The present invention provides compounds having an agonistic activity to the cannabinoid receptor, which is represented by the formula (I): wherein R1 is optionally substituted C1-C8 alkyl and the like; R2 is C1-C6 alkyl; R3 is C1-C6 alkyl and the like; or R2 and R3 taken together with may form an optionally substituted 5 to 10 membered non-aromatic carbon ring; R4 is hydrogen and the like; G is a group selected from the groups shown by the formula an the like: wherein R5 is hydrogen and the like; X1 is a single bond and the like; X2 is optionally substituted C1-C8 alkylene that may be replaced by one or two groups of —O—, or —N(R6)—, wherein R6 is hydrogen and the like, and the like; X3 is a single bond and the like; a pharmaceutically acceptable salt or a solvate thereof, and pharmaceutical compositions, atopic dermatitis treating agents, and anti-pruritus agents, especially anti-pruritus agents for oral used and for external application, which each contains the said compound as an active ingredie
    Type: Grant
    Filed: October 28, 2005
    Date of Patent: May 15, 2012
    Assignee: Shionogi & Co., Ltd.
    Inventors: Natsuki Ishizuka, Yoshiharu Hiramatsu, Yasuhiko Fujii, Yoshikazu Fukui
  • Publication number: 20100108935
    Abstract: The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which exhibit a good moldability, in particular, a good mechanical strength even when rapidly quenched upon injection-cooling, and is capable of producing a bonded magnet molded product having excellent magnetic properties, as well as a bonded magnet molded product such as a magnet roll using the ferrite particles and the resin composition. There are provided ferrite particles for bonded magnets which comprise phosphorus adsorbed and/or incorporated in ferrite, in which a content of the phosphorus in the ferrite is 120 to 5000 mg/kg (0.012 to 0.50% by weight) in terms of P; a resin composition for bonded magnets; and a magnet roll.
    Type: Application
    Filed: March 14, 2008
    Publication date: May 6, 2010
    Inventors: Yasuhiko Fujii, Yasushi Nishio, Kazuhisa Kanefuji, Tatsuya Ishida, Shigeru Takaragi
  • Publication number: 20100099676
    Abstract: A compound represented by the general formula (I): wherein R1 is wherein R26 and R28 are each independently lower alkyloxy and the like; n1 is an integer of 0 to 3; Z is a optionally substituted C1-C5 alkynylene which may be interrupted with a substituent selected from Substituent group a and the like; A is a group represented by the formula: wherein R6 and R7 are each independently lower alkyl and the like; m and n are each independently 0, 1, or 2; R2 is a hydrogen atom and the like; R3 is optionally substituted lower alkyl and the like; R4 is a hydrogen atom; or R3 and R4 may be taken together with an adjacent carbon atom to from a ring; R5 is hydroxyl and the like, or an optically active isomer, a pharmaceutically acceptable salt or a solvate thereof.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 22, 2010
    Applicant: SHIONOGI & CO., LTD.
    Inventors: Takeshi Endoh, Yasuhiko Fujii, Eiichi Kojima, Genta Tadano, Naoko Yamaguchi, Yo Adachi, Sachie Tagashira, Yuki Tachibana, Naohiro Onodera
  • Publication number: 20100065771
    Abstract: The present invention relates to ferrite particles for bonded magnet, having a volume-average particle diameter of 2.1 to 2.7 ?m and a particle diameter x90 of 4.3 to 5.4 ?m wherein the x90 represents a particle diameter at which a cumulative percentage of particles under sieve (undersize particles) based on a volume thereof is 90%, when determined from a particle size distribution thereof measured by using a laser diffraction type particle size distribution measuring apparatus.
    Type: Application
    Filed: October 2, 2009
    Publication date: March 18, 2010
    Applicant: TODA KOGYO CORPORATION
    Inventors: Yasuhiko FUJII, Minoru Ohsugi, Yasushi Nishio, Yosuke Koyama, Shigeru Takaragi
  • Publication number: 20080103139
    Abstract: The present invention provides compounds having an agonistic activity to the cannabinoid receptor, which is represented by the formula (I): wherein R1 is optionally substituted C1-C8 alkyl and the like; R2 is C1-C6 alkyl; R3 is C1-C6 alkyl and the like; or R2 and R3 taken together with may form an optionally substituted 5 to 10 membered non-aromatic carbon ring; R4 is hydrogen and the like; G is a group selected from the groups shown by the formula an the like: wherein R5 is hydrogen and the like; X1 is a single bond and the like; X2 is optionally substituted C1-C8 alkylene that may be replaced by one or two groups of —O—, or —N(R6)—, wherein R6 is hydrogen and the like, and the like; X3 is a single bond and the like; a pharmaceutically acceptable salt or a solvate thereof, and pharmaceutical compositions, atopic dermatitis treating agents, and anti-pruritus agents, especially anti-pruritus agents for oral used and for external application, which each contains the said compound as an active ingredien
    Type: Application
    Filed: October 28, 2005
    Publication date: May 1, 2008
    Inventors: Natsuki Ishizuka, Takashi Sasatani, Yoshiharu Hiramatsu, Masanao Inagaki, Masahide Odan, Hiroshi Hashizume, Susumu Mitsumori, Yasuhiko Fujii, Yoshikazu Fukui, Hideaki Watanabe, Jun Sato
  • Patent number: 7220366
    Abstract: Iron particles for purifying soil or ground water of the present invention comprise a mixed phase of ?-Fe phase and Fe3O4 phase, and having a BET specific surface area of 5 to 60 m2/g, an Fe content of not less than 75% by weight based on the weight of the iron particles and a sulfur content of not less than 1,000 ppm. The iron particles are capable of decomposing or insolubilizing harmful substances such as organohalogen compounds and/or heavy metals, cyanogen, etc. contained in the soil or ground water in efficient, continuous and economical manners.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: May 22, 2007
    Assignee: Toda Kogyo Corporation
    Inventors: Masayuki Uegami, Junichi Kawano, Tomoko Okita, Yasuhiko Fujii, Kenji Okinaka, Koji Kakuya, Soichi Yatagai
  • Patent number: 7214318
    Abstract: A method for separation of actinide elements comprising feeding a solution containing actinide elements such as americium, curium, californium and the like, into a resin column in which a weakly basic primary, secondary or tertiary anion exchange resin obtained by resinifying pyridine, imidazole or alkylamine has been packed, and then feeding an eluent of a mixed solution of nitric acid and alkyl alcohol such as methanol, ethanol, propanol and the like into the resin column to chromatographically separate the actinide elements from each other. This method makes it possible to efficiently separate the actinide elements from each other by a unit operation at ordinary temperature and ordinary pressure while avoiding oxidation operation, and hence makes it possible to avoid generation of secondary wastes and operations difficult in terms of engineering, such as precipitation.
    Type: Grant
    Filed: February 4, 2005
    Date of Patent: May 8, 2007
    Assignee: Japan Nuclear Cycle Development Institute
    Inventors: Tatsuya Suzuki, Yasuhiko Fujii, Masaki Ozawa
  • Publication number: 20060163172
    Abstract: Iron particles for purifying soil or ground water of the present invention comprise a mixed phase of ?-Fe phase and Fe3O4 phase, and having a BET specific surface area of 5 to 60 m2/g, an Fe content of not less than 75% by weight based on the weight of the iron particles and a sulfur content of not less than 1,000 ppm. The iron particles are capable of decomposing or insolubilizing harmful substances such as organohalogen compounds and/or heavy metals, cyanogen, etc. contained in the soil or ground water in efficient, continuous and economical manners.
    Type: Application
    Filed: March 7, 2006
    Publication date: July 27, 2006
    Applicant: TODA KOGYO CORPORATION
    Inventors: Masayuki Uegami, Junichi Kawano, Tomoko Okita, Yasuhiko Fujii, Kenji Okinaka, Koji Kakuya, Soichi Yatagai
  • Publication number: 20060081811
    Abstract: Iron composite particles for purifying soil or ground water, comprise an iron component, at least one noble metal selected from the group consisting of ruthenium, rhodium and palladium, and carbon or aluminum, and having a noble metal content of 0.01 to 5.00% by weight and a particle diameter of 0.01 to 1.0 ?m. The iron composite particles and the purifying agent according to the present invention are capable of decomposing aliphatic organohalogen compounds such as dichloromethane, carbon tetrachloride, 1,2-dichloroethane, 1,1-dichloroethylene, cis-1,2-dichloroethylene, 1,1,1-trichloroethane, 1,1,2-trichloroethane, trichloroethylene, tetrachloroethylene, 1,3-dichloropropene or the like, and aromatic organohalogen compounds such as dioxins, PCB (polychlorinated biphenyl) or the like, which are contained in soil, ground water or waste water, at ordinary temperature in an efficient and economical manner.
    Type: Application
    Filed: March 7, 2005
    Publication date: April 20, 2006
    Applicant: TODA KOGYO CORPORATION
    Inventors: Toshiki Matsui, Tomoyuki Imai, Yasuhiko Fujii, Tomoko Okita, Kenji Okinaka, Masayuki Uegami, Osamu Okimoto, Junichi Kawano, Koji Kakuya
  • Patent number: 7022256
    Abstract: Iron particles for purifying soil or ground water of the present invention comprise a mixed phase of ?-Fe phase and Fe3O4 phase, and having a BET specific surface area of 5 to 60 m2/g, an Fe content of not less than 75% by weight based on the weight of the iron particles and a sulfur content of not less than 1,000 ppm. The iron particles are capable of decomposing or insolubilizing harmful substances such as organohalogen compounds and/or heavy metals, cyanogen, etc. contained in the soil or ground water in efficient, continuous and economical manners.
    Type: Grant
    Filed: December 3, 2002
    Date of Patent: April 4, 2006
    Assignee: Toda Kogyo Corporation
    Inventors: Masayuki Uegami, Junichi Kawano, Tomoko Okita, Yasuhiko Fujii, Kenji Okinaka, Koji Kakuya, Soichi Yatagi
  • Publication number: 20050214538
    Abstract: A master batch pellet comprises a thermoplastic resin and 2.0 to 60% by weight of a white combustion catalyst blended in the thermoplastic resin, the white combustion catalyst comprising composite particles obtained by carrying 0.001 to 0.10% by weight of metallic Pd colloid particles having an average particle diameter of not more than 10 nm on surface of respective inorganic carrier particles having an average particle diameter of 0.1 to 1.0 ?m and composed of at least one selected from the group consisting of aluminum oxide, silicon oxide, calcium carbonate and titanium oxide. The master batch pellet of the present invention is suitable for producing a thermoplastic resin composition exhibiting an excellent combustion-promoting effect, more specifically a thermoplastic resin composition which is promoted in complete combustion upon incineration thereof and effectively inhibited from generating harmful organic substances.
    Type: Application
    Filed: March 21, 2005
    Publication date: September 29, 2005
    Applicant: TODA KOGYO CORPORATION
    Inventors: Toshiki Matsui, Yasuhiko Fujii, Tomoko Okita, Minoru Ohsugi, Shigekazu Jikuhara