Patents by Inventor Kazuya Serizawa

Kazuya Serizawa 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: 7993475
    Abstract: A firing agent which is used in a gas generating device of a vehicle occupant protection device together with a non-azide gas generating agent, for firing the non-azide gas generating agent, wherein the firing agent contains a fuel and an oxidizing agent and is configured to burn at a combustion speed higher than that of the non-azide gas generating agent; a method for using the firing agent; and a gas generating device of a vehicle occupant protection device using the firing agent.
    Type: Grant
    Filed: November 25, 2009
    Date of Patent: August 9, 2011
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Tomonori Tasaki, Katsuhiko Takahashi
  • Publication number: 20100109304
    Abstract: A firing agent which is used in a gas generating device of a vehicle occupant protection device together with a non-azide gas generating agent, for firing the non-azide gas generating agent, wherein the firing agent contains a fuel and an oxidizing agent and is configured to burn at a combustion speed higher than that of the non-azide gas generating agent; a method for using the firing agent; and a gas generating device of a vehicle occupant protection device using the firing agent.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 6, 2010
    Applicant: NOF CORPORATION
    Inventors: Kazuya SERIZAWA, Tomonori TASAKI, Katsuhiko TAKAHASHI
  • Patent number: 7645351
    Abstract: An explosive material composition containing, as an active ingredient, particles of a water-soluble reactive ingredient having an uniform particle size. Each particle is coated with an oil ingredient and/or a thickener. The coated particles form an agglomerate.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: January 12, 2010
    Assignee: NOF Corporation
    Inventors: Yoshio Ohno, Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20080217893
    Abstract: A firing agent which is used in a gas generating device of a vehicle occupant protection device together with a non-azide gas generating agent, for firing the non-azide gas generating agent, wherein the firing agent contains a fuel and an oxidizing agent and is configured to burn at a combustion speed higher than that of the non-azide gas generating agent; a method for using the firing agent; and a gas generating device of a vehicle occupant protection device using the firing agent.
    Type: Application
    Filed: June 17, 2005
    Publication date: September 11, 2008
    Applicant: NOF CORPORATION
    Inventors: Kazuya Serizawa, Tomonori Tasaki, Katsuhiko Takahashi
  • Patent number: 7335270
    Abstract: A stable, low-temperature ignition gas generating composition has a heating starting temperature of 170 to 220° C. The gas generating composition includes ammonium perchlorate, a chlorine scavenger, and microcrystalline carbon powder. The chlorine scavenger is sodium nitrate or aluminun/magnesium mixed powder, and the microcrystalline carbon powder is activated carbon or charcoal. The gas generating composition may include 40 to 58% by weight of ammonium perchlorate, 30 to 43% by weight of the chlorine scavenger, and 1 to 30% by weight of the microcrystalline carbon powder.
    Type: Grant
    Filed: October 22, 2002
    Date of Patent: February 26, 2008
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 7081175
    Abstract: A gas generating composition includes ammonium nitrate as an oxidizing agent, microcrystalline carbon powder as a reducing agent, and a stabilizer for preventing decomposition of ammonium nitrate. The amounts of the ammonium nitrate, the carbon powder, and the stabilizer are 89 to 99 wt %, 1 to 6 wt %, and 0.2 to 6 wt %, respectively, with respect to the total amount of ammonium nitrate, microcrystalline carbon and stabilizer. The amount of microcrystalline carbon is preferably 1.5 to 6 wt % with respect to the amount of ammonium nitrate, and the amount of the stabilizer is preferably 10 to 200 wt % with respect to the amount of microcrystalline carbon powder. The stability of present composition is improved, especially, at high temperatures. The composition has an appropriate burn rate, produces substantially no carbon dioxide, and has a proper sensitivity. The present composition is easy to handle and is inexpensive.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: July 25, 2006
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20050189049
    Abstract: An explosive material composition containing, as an active ingredient, particles of a water-soluble reactive ingredient having an uniform particle size. Each particle is coated with an oil ingredient and/or a thickener. The coated particles form an agglomerate.
    Type: Application
    Filed: November 1, 2004
    Publication date: September 1, 2005
    Inventors: Yoshio Ohno, Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 6846373
    Abstract: A gas-generating composition having superior gasification rate, appropriate combustion rate, and suppressed carbon monoxide generation. The gas-generating composition includes ammonium nitrate, metal oxyacid salt, ammonium perchlorate, and combusting component. A basic combustion residue derived from the metal oxyacid salt is neutralized by hydrogen chloride derived from the ammonium perchlorate, thereby substantially neutralizing combustion residue of the gas-generating composition.
    Type: Grant
    Filed: December 26, 2001
    Date of Patent: January 25, 2005
    Assignee: NOF Corporation
    Inventors: Shinsuke Takayama, Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20040216819
    Abstract: A gas generating composition includes ammonium nitrate as an oxidizing agent, microcrystalline carbon powder as a reducing agent, and a stabilizer for preventing decomposition of ammonium nitrate. The amounts of the ammonium nitrate, the carbon powder, and the stabilizer are 89 to 99 wt %, 1 to 6 wt %, and 0.2 to 6 wt %, respectively, with respect to the total amount of ammonium nitrate, microcrystalline carbon and stabilizer. The amount of microcrystalline carbon is preferably 1.5 to 6 wt % with respect to the amount of ammonium nitrate, and the amount of the stabilizer is preferably 10 to 200 wt % with respect to the amount of microcrystalline carbon powder. The stability of present composition is improved, especially, at high temperatures. The composition has an appropriate burn rate, produces substantially no carbon dioxide, and has a proper sensitivity. The present composition is easy to handle and is inexpensive.
    Type: Application
    Filed: March 17, 2004
    Publication date: November 4, 2004
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 6811626
    Abstract: A gas-generating composition is provided resistant to temperature changes between −40° C. and 100° C., repeated 200 times. The gas-generating composition includes a nitrogen compound stabilizer having nitrogen atom with an unpaired electron. The gas-generating composition is stabilized by the stabilizer by improving the adhesiveness between the organic binder and ammonium nitrate.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: November 2, 2004
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20030097953
    Abstract: Disclosed is a gas generating composition being stable and having a heating starting temperature of 170 to 220° C., which is of a low-temperature ignition type. The gas generating composition comprises ammonium perchlorate, a chlorine scavenger, and microcrystalline carbon powder. The chlorine scavenger is sodium nitrate or aluminum/magnesium mixed powder, and the microcrystalline carbon powder is activated carbon or charcoal. The gas generating composition preferably comprises 40 to 58% by weight of ammonium perchlorate, 30 to 41% by weight of the chlorine scavenger, and 1 to 30% by weight of the microcrystalline carbon powder.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 29, 2003
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20020121321
    Abstract: A gas-generating composition having superior gasification rate, appropriate combustion rate, and suppressed carbon monoxide generation. The gas-generating composition includes ammonium nitrate, metal oxyacid salt, ammonium perchlorate, and combusting component. A basic combustion residue derived from the metal oxyacid salt is neutralized by hydrogen chloride derived from the ammonium perchlorate, thereby substantially neutralizing combustion residue of the gas-generating composition.
    Type: Application
    Filed: December 26, 2001
    Publication date: September 5, 2002
    Applicant: NOF Corporation
    Inventors: Shinsuke Takayama, Kazuya Serizawa, Katsuhiko Takahashi
  • Publication number: 20020059969
    Abstract: A gas-generating composition is provided resistant to temperature changes between −40° C. and 100° C., repeated 200 times. The gas-generating composition includes a nitrogen compound stabilizer having nitrogen atom with an unpaired electron. The gas-generating composition is stabilized by the stabilizer by improving the adhesiveness between the organic binder and ammonium nitrate.
    Type: Application
    Filed: September 14, 2001
    Publication date: May 23, 2002
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi
  • Patent number: 6368432
    Abstract: A gas generating composition for generating gas by a combustion reaction to inflate, for example, an airbag. The gas generating composition includes an oxidant and crystalline carbon powder that reacts with the oxidant. The oxidant is preferably ammonium nitrate. The crystalline carbon powder is preferably activated carbon powder. The gas generating composition preferably includes a high energy substance, binder and plasticizer.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: April 9, 2002
    Assignee: NOF Corporation
    Inventors: Kazuya Serizawa, Katsuhiko Takahashi, Kenji Nakamichi
  • Publication number: 20020007885
    Abstract: A gas generating composition for generating gas by a combustion reaction to inflate, for example, an airbag. The gas generating composition includes an oxidant and crystalline carbon powder that reacts with the oxidant. The oxidant is preferably ammonium nitrate. The crystalline carbon powder is preferably activated carbon powder. The gas generating composition preferably includes a high energy substance, binder and plasticizer.
    Type: Application
    Filed: December 15, 1998
    Publication date: January 24, 2002
    Inventors: KAZUYA SERIZAWA, KATSUHIKO TAKAHASHI, KENJI NAKAMICHI