Patents by Inventor Toshio Tada

Toshio Tada 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).

  • Patent number: 8883329
    Abstract: An aspect of the present invention relates to a hexagonal ferrite magnetic powder manufactured by a glass crystallization method as well as having an average plate diameter ranging from 15 to 25 nm, an average plate ratio ranging from 2.0 to 2.8 and a coercive force (Hc) ranging from 159 to 279 kA/m.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: November 11, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Satoshi Matsubaguchi, Ayako Matsumoto, Toshio Tada, Akira Manabe
  • Publication number: 20140295214
    Abstract: Hexagonal ferrite magnetic particles have an activation volume ranging from 1,000 nm3 to 1,500 nm3, and ?E10%/kT, thermal stability at 10% magnetization reversal, is equal to or greater than 40.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Toshio TADA, Hiroyuki SUZUKI, Osamu SHIMIZU
  • Publication number: 20140287270
    Abstract: An aspect of the present invention relates to hexagonal ferrite magnetic powder, which has an activation volume ranging from 900 nm3 to 1,600 nm3, and a ratio of a coefficient of plate thickness variation to a coefficient of particle diameter variation, coefficient of plate thickness variation/coefficient of particle diameter coefficient, ranging from 0.20 to 0.60.
    Type: Application
    Filed: March 24, 2014
    Publication date: September 25, 2014
    Applicant: FUJIFILM CORPORATION
    Inventors: Hiroyuki SUZUKI, Toshio TADA
  • Publication number: 20140031489
    Abstract: The present invention provides a tire rubber composition that makes it possible to suppress discoloration of tires, and a pneumatic tire formed from the rubber composition. The present invention relates to a tire rubber composition containing a bluing agent.
    Type: Application
    Filed: July 24, 2013
    Publication date: January 30, 2014
    Inventor: Toshio TADA
  • Patent number: 8419966
    Abstract: An aspect of the present invention relates to a method of manufacturing a hexagonal ferrite magnetic powder comprising preparing a melt by melting a starting material mixture comprising a hexagonal ferrite-forming component and a glass-forming component; rapidly cooling the melt to obtain an amorphous material comprising 0.3 to 2.0 weight percent of carbon atoms; heating the amorphous material to a temperature range of 580 to 700° C. and maintaining the amorphous material within the temperature range to precipitate hexagonal ferrite magnetic particles; and collecting the hexagonal ferrite magnetic particles precipitated.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: April 16, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Shiho Kamisawa, Toshio Tada, Nobuo Yamazaki
  • Publication number: 20120251844
    Abstract: An aspect of the present invention relates to magnetic recording powder, which comprises hexagonal ferrite magnetic particles, the hexagonal ferrite magnetic particle comprising 0.5 to 5.0 atomic percent of an Fe substitution element in the form of just a divalent element per 100 atomic percent of a content of Fe and having an activation volume ranging from 1,200 to 1,800 nm3.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 4, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Nobuo YAMAZAKI, Toshio TADA, Hiroyuki SUZUKI
  • Publication number: 20110299198
    Abstract: The present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support, wherein the magnetic layer has a thickness ? ranging from 10 to 80 nm, a product, Mr?, of a residual magnetization Mr of the magnetic layer and the thickness ? of the magnetic layer is equal to or greater than 1 mA but less than 5 mA, a ratio, Sdc/Sac, of an average area Sdc of magnetic clusters in a DC demagnetized state to an average area Sac of magnetic clusters in an AC demagnetized state as measured by a magnetic force microscope, MFM, ranges from 0.8 to 2.0.
    Type: Application
    Filed: May 4, 2011
    Publication date: December 8, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Toshio TADA, Takeshi Harasawa
  • Patent number: 7909959
    Abstract: It is an object of the invention to provide a separation method of an adherend capable of easily and reliably separating an adherend stuck using an adhesive, a method for recovering an electronic part from an electronic part laminate, and a separation method of laminate glass. The invention provides a separation method of an adherend, which is a method of separating an adherend stuck by using an adhesive, and comprises the steps of: air-tightly sealing the adherend together with a fluid being a gas at a normal temperature and normal pressure in a pressure resistant container, making the inside of the pressure resistant container in a high pressure state, and releasing the pressure of the inside of the pressure resistant container.
    Type: Grant
    Filed: April 14, 2004
    Date of Patent: March 22, 2011
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Toshio Tada, Yohei Nishimura, Katsunori Toyoshima, Juichi Fukatani, Tadahiko Yoshioka
  • Publication number: 20100304187
    Abstract: An aspect of the present invention relates to a hexagonal ferrite magnetic powder manufactured by a glass crystallization method as well as having an average plate diameter ranging from 15 to 25 nm, an average plate ratio ranging from 2.0 to 2.8 and a coercive force (Hc) ranging from 159 to 279 kA/m.
    Type: Application
    Filed: June 1, 2010
    Publication date: December 2, 2010
    Applicants: FUJIFILM Corporation, ASAHI GLASS COMPANY LIMITED
    Inventors: Satoshi MATSUBAGUCHI, Ayako Matsumoto, Toshio Tada, Akira Manabe
  • Publication number: 20100246063
    Abstract: An aspect of the present invention relates to a method of manufacturing a hexagonal ferrite magnetic powder comprising preparing a melt by melting a starting material mixture comprising a hexagonal ferrite-forming component and a glass-forming component; rapidly cooling the melt to obtain an amorphous material comprising 0.3 to 2.0 weight percent of carbon atoms; heating the amorphous material to a temperature range of 580 to 700° C. and maintaining the amorphous material within the temperature range to precipitate hexagonal ferrite magnetic particles; and collecting the hexagonal ferrite magnetic particles precipitated.
    Type: Application
    Filed: March 30, 2010
    Publication date: September 30, 2010
    Applicant: FUJIFILM CORPORATION
    Inventors: Shiho KAMISAWA, Toshio TADA, Nobuo YAMAZAKI
  • Publication number: 20100209716
    Abstract: A laminated glass and an interlayer film for laminated glasses are provided, which have the high performance for mitigating the impact given externally and, particularly in the case of using it as glass for vehicles, and which have the high performance for mitigating the impact when a person's head comes into collision with the glass due to the occurrence of a personal accident. Also provided is a laminated glass, wherein at least an interlayer film for laminated glasses and a glass sheet are laminated and unified, Head Injury Criteria (HIC) values, measured according to regulations of European Enhanced Vehicle-safety Committee; EEVC/WG 17, being 1,000 or lower.
    Type: Application
    Filed: April 28, 2010
    Publication date: August 19, 2010
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Juichi Fukatani, Toshio Tada, Tsuyoshi Hasegawa, Masaki Matsudo
  • Patent number: 7732042
    Abstract: A laminated glass and an interlayer film for laminated glasses are provided, which have the high performance for mitigating the impact given externally and, particularly in the case of using it as glass for vehicles, and which have the high performance for mitigating the impact when a person's head comes into collision with the glass due to the occurrence of a personal accident. Also provided is a laminated glass, wherein at least an interlayer film for laminated glasses and a glass sheet are laminated and unified, Head Injury Criteria (HIC) values, measured according to regulations of European Enhanced Vehicle-safety Committee; EEVC/WG 17, being 1,000 or lower.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: June 8, 2010
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Juichi Fukatani, Toshio Tada, Tsuyoshi Hasegawa, Masaki Matsudo
  • Patent number: 7674854
    Abstract: It is an object of the present invention to provide a method of producing a polyvinyl acetal resin by which a polyvinyl acetal resin having a high acetalization degree can be produced even in a solid catalyst system, a polyvinyl butyral resin produced by the above-mentioned production method of a polyvinyl acetal resin, and a method of producing an esterified polyvinyl alcohol resin by which the esterification can be performed at high efficiency even in a solid catalyst system. The present invention is a method of producing a polyvinyl acetal resin, wherein a solution or a suspension containing a polyvinyl alcohol resin and a carbonyl compound is pressurized in the presence of a solid catalyst.
    Type: Grant
    Filed: August 4, 2004
    Date of Patent: March 9, 2010
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Toshio Tada, Yohei Nishimura, Katsunori Toyoshima
  • Publication number: 20100021771
    Abstract: An aspect of the present invention relates to a method of manufacturing a hexagonal ferrite magnetic powder comprising preparing a melt by melting a starting material mixture, wherein the starting material mixture comprises at least one hexagonal ferrite-forming component and glass-forming component comprising at least one B2O3 component and a content of the B2O3 component in the mixture ranges from 15 to 27 mole percent in terms of B2O3; rapidly cooling the melt to obtain a solid having a saturation magnetization level of equal to or lower than 0.6 A·m2/kg; and heating the solid to a temperature range of 600 to 690° C. and maintaining the solid within the temperature range to precipitate a hexagonal ferrite magnetic powder having an average plate diameter ranging from 15 to 25 nm.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 28, 2010
    Applicant: FUJIFILM Corporation
    Inventors: Nobuo YAMAZAKI, Toshio Tada
  • Patent number: 7629419
    Abstract: It is an object of the invention to provide a method for producing a modified polymer compound and a production apparatus of a modified polymer capable of producing a modified polymer compound with a high purity in a short time, and such a modified polymer compound. The invention provides a method for producing a modified polymer compound, which comprises chemically modifying a polymer compound in a supercritical fluid or a high temperature and high pressure fluid, said modified polymer compound being composed of monomer units obtainable by chemically modifying part of or all of monomer units composed of the polymer compound before modification reaction.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: December 8, 2009
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Katsunori Toyoshima, Toshio Tada, Yohei Nishimura
  • Publication number: 20090174969
    Abstract: The present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support, wherein the magnetic layer has a thickness ? ranging from 10 to 80 nm, a product, Mr?, of a residual magnetization Mr of the magnetic layer and the thickness ? of the magnetic layer is equal to or greater than 1 mA but less than 5 mA, a ratio, Sdc/Sac, of an average area Sdc of magnetic clusters in a DC demagnetized state to an average area Sac of magnetic clusters in an AC demagnetized state as measured by a magnetic force microscope, MFM, ranges from 0.8 to 2.0.
    Type: Application
    Filed: March 30, 2007
    Publication date: July 9, 2009
    Applicant: Fujifilm Corporation
    Inventors: Toshio Tada, Takeshi Harasawa
  • Patent number: 7452608
    Abstract: It is an object of the present invention to provide a laminated glass and an interlayer film for laminated glasses, which have the high performance for mitigating the impact given externally and, particularly in the case of using it as glass for vehicles, have the high performance for mitigating the impact when head comes into collision with the glass due to the occurrence of a personal accident. The present invention is directed to a laminated glass, wherein at least an interlayer film for laminated glasses and a glass sheet are laminated and unified, Head Injury Criteria (HIC) values, measured according to regulations of European Enhanced Vehicle-safety Committee; EEVC/WG 17, being 1,000 or lower.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: November 18, 2008
    Assignee: Sekisui Chemical Co., Ltd.
    Inventors: Juichi Fukatani, Toshio Tada, Tsuyoshi Hasegawa, Masaki Matsudo
  • Publication number: 20080280116
    Abstract: It is an object of the present invention to provide a laminated glass and an interlayer film for laminated glasses, which have the high performance for mitigating the impact given externally and, particularly in the case of using it as glass for vehicles, have the high performance for mitigating the impact when head comes into collision with the glass due to the occurrence of a personal accident. The present invention is directed to a laminated glass, wherein at least an interlayer film for laminated glasses and a glass sheet are laminated and unified, Head Injury Criteria (HIC) values, measured according to regulations of European Enhanced Vehicle-safety Committee; EEVC/WG 17, being 1,000 or lower.
    Type: Application
    Filed: July 9, 2008
    Publication date: November 13, 2008
    Applicant: Sekisui Chemical Co., Ltd.
    Inventors: Juichi FUKATANI, Toshio Tada, Tsuyoshi Hasegawa, Masaki Matsudo
  • Publication number: 20070293651
    Abstract: It is an object of the present invention to provide a method of producing a polyvinyl acetal resin by which a polyvinyl acetal resin having a high acetalization degree can be produced even in a solid catalyst system, a polyvinyl butyral resin produced by the above-mentioned production method of a polyvinyl acetal resin, and a method of producing an esterified polyvinyl alcohol resin by which the esterification can be performed at high efficiency even in a solid catalyst system. The present invention is a method of producing a polyvinyl acetal resin, wherein a solution or a suspension containing a polyvinyl alcohol resin and a carbonyl compound is pressurized in the presence of a solid catalyst.
    Type: Application
    Filed: August 4, 2004
    Publication date: December 20, 2007
    Inventors: Toshio Tada, Yohei Nishimura, Katsunori Toyoshima
  • Publication number: 20070240993
    Abstract: An electrochemical deposition method in which the structure of a substance to be deposited on the surface of a working electrode is determined, an electrochemical deposition apparatus, and a microstructure are provided. A positive electrode 1 and a negative electrode 2 functioning as a working electrode are arranged oppositely in a liquid tank 5 containing an electrolytic (acid) solution (hereinafter referred to as “solution”) 4 in which plural substance are dissolved in an ionic state, and then a predetermined voltage is applied between the positive electrode 1 and the negative electrode 2. A reference electrode 3 is also arranged in the liquid tank 5 and the potential between the negative electrode 2 and the reference electrode 3 is measured. Since the solution 4 can be considered as a conductor, the potential V1 of the negative electrode 2 relative to the solution 4 can be determined.
    Type: Application
    Filed: March 30, 2007
    Publication date: October 18, 2007
    Inventors: Yoshihiro Nakato, Shuji Nakanishi, Kazuhiro Fukami, Toshio Tada, Sho-Ichiro Sakai, Tomoyuki Nagai, Haruka Yamasaki