Patents by Inventor Kazuma Nakazawa
Kazuma Nakazawa 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).
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Patent number: 10227743Abstract: The invention provides an apparatus, program, and method for controlling the automatic spraying of an antifreezing agent that can reduce the cost of the antifreezing agent and the impact of salt damages caused by the antifreezing agent. This is accomplished by reducing the amount of antifreezing agent to be sprayed automatically according to road surface condition and reducing the amount of the antifreezing agent left unused on completion of the spray operation by grasping in advance the total spray amount of the antifreezing agent.Type: GrantFiled: November 6, 2014Date of Patent: March 12, 2019Assignee: BRIDGESTONE CORPORATIONInventors: Kazuma Nakazawa, Yasumichi Wakao, Go Nagaya, Shinya Tsuchida, Yasushi Hanatsuka, Hiroshi Morinaga, Tomonori Ohiro
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Publication number: 20170241778Abstract: The invention provides a method for accurately predicting a road surface condition at a location within a predetermined range. To that end, the road surface conditions at the location within the predetermined range are predicted using road surface estimation decision values calculated using vehicular information, which is the information on the behavior of a vehicle Wi during travel obtained by an on-board sensor mounted on the vehicle, or estimated road surface conditions estimated using the road surface estimation decision values. In doing so, the road surface condition at the location within the predetermined range is predicted based on the road surface estimation decision values calculated for the location within the predetermined range or the time-dependent changes in the estimated road surface conditions.Type: ApplicationFiled: October 14, 2015Publication date: August 24, 2017Applicant: BRIDGESTONE CORPORATIONInventors: Yasushi HANATSUKA, Kazuma NAKAZAWA, Yasumichi WAKAO
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Patent number: 9561695Abstract: The present invention provides a tire internal pressure warning system, comprising: an internal pressure data acquisition apparatus for obtaining data of internal pressure of each tire 5 of a vehicle 6 (a TPMS sensor transmitter 1 and a TPMS receiver 2); and an information terminal device 3 for determining whether there is a puncture-based failure or a failure resulting from a natural pressure drop, based on a change in the internal pressure of each tire received from the TPMS receiver 2, and displaying a warning in accordance with the failure condition.Type: GrantFiled: September 10, 2013Date of Patent: February 7, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Shotaro Horikoshi, Kazuma Nakazawa
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Publication number: 20160281312Abstract: The invention provides an apparatus, program, and method for controlling the automatic spraying of an antifreezing agent that can reduce the cost of the antifreezing agent and the impact of salt damages caused by the antifreezing agent. This is accomplished by reducing the amount of antifreezing agent to be sprayed automatically according to road surface condition and reducing the amount of the antifreezing agent left unused on completion of the spray operation by grasping in advance the total spray amount of the antifreezing agent.Type: ApplicationFiled: November 6, 2014Publication date: September 29, 2016Applicant: BRIDGESTONE CORPORATIONInventors: Kazuma NAKAZAWA, Yasumichi WAKAO, Go NAGAYA, Shinya TSUCHIDA, Yasushi HANATSUKA, Hiroshi MORINAGA, Tomonori OHIRO
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Publication number: 20150239307Abstract: The present invention provides a tire internal pressure warning system, comprising: an internal pressure data acquisition apparatus for obtaining data of internal pressure of each tire 5 of a vehicle 6 (a TPMS sensor transmitter 1 and a TPMS receiver 2); and an information terminal device 3 for determining whether there is a puncture-based failure or a failure resulting from a natural pressure drop, based on a change in the internal pressure of each tire received from the TPMS receiver 2, and displaying a warning in accordance with the failure condition.Type: ApplicationFiled: September 10, 2013Publication date: August 27, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Shotaro Horikoshi, Kazuma Nakazawa
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Patent number: 7891385Abstract: To reliably supply a predetermined amount of sealing agent into a pneumatic tire even if the device is inclined and after the predetermined amount of sealing agent is supplied, to automatically start feeding compressed air into the pneumatic tire. In pumping device 30, when compressed air is supplied to air chamber 54, internal pressure of air chamber 54 increases, and as the internal pressure of air chamber 54 rises, a contained volume of air chamber 54 increases while a contained volume of liquid container 52 decreases. Thus, sealing agent 100 in an amount corresponding to the amount corresponding to the reduction in the contained volume of liquid container 52, is forcibly discharged from discharge outlet 64 and the discharged sealing agent 100 is injected into tire 90.Type: GrantFiled: May 26, 2005Date of Patent: February 22, 2011Assignee: Bridgestone CorporationInventors: Hideshi Yanagi, Daisuke Sugio, Kazuma Nakazawa, Shinichi Iwasaki, Rieko Iwasaki, legal representative, Yuji Takeda, Masaki Yoshida
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Patent number: 7589135Abstract: A puncture sealing agent includes at least a rubber latex solution, a short fiber and a clay base viscosity improver, the viscosity of the rubber latex solution after addition of the clay base viscosity improver being 3 to 6000 mPa·s in a range of +50 to ?20° C.Type: GrantFiled: December 6, 2004Date of Patent: September 15, 2009Assignee: Bridgestone CorporationInventors: Daisuke Sugio, Ryuji Izumoto, Kazuma Nakazawa
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Patent number: 7531056Abstract: A manufacturing method for annular run-flat tire support which has a supporting part and a leg part, and which, at the time of run-flat running, is capable of carrying load, comprises the steps of supplying said supporting part and said leg part, applying a bonding agent including a chemical conversion treatment to the bonding region of the radial-direction inside end part of said supporting part that is provided for bonding to said leg part, and bonding between said radial-direction inside end part and said leg part. Thereby, a manufacturing method for run-flat tire support which maintains a high bondability between the supporting part and the leg part, and is excellent in durability, and a run-flat tire support are provided.Type: GrantFiled: November 25, 2004Date of Patent: May 12, 2009Assignee: Bridgestone CorporationInventors: Shinichi Iwasaki, Kazuma Nakazawa, Humitaka Ino, Yoshikatsu Hatakeyama, Shintaro Hayashi
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Publication number: 20090056850Abstract: To reliably supply a predetermined amount of sealing agent into a pneumatic tire even if the device is inclined and after the predetermined amount of sealing agent is supplied, to automatically start feeding compressed air into the pneumatic tire. In pumping device 30, when compressed air is supplied to air chamber 54, internal pressure of air chamber 54 increases, and as the internal pressure of air chamber 54 rises, a contained volume of air chamber 54 increases while a contained volume of liquid container 52 decreases. Thus, sealing agent 100 in an amount corresponding to the amount corresponding to the reduction in the contained volume of liquid container 52, is forcibly discharged from discharge outlet 64 and the discharged sealing agent 100 is injected into tire 90.Type: ApplicationFiled: May 26, 2005Publication date: March 5, 2009Applicant: BRIDGESTONE CORPORATIONInventors: Hideshi Yanagi, Daisuke Sugio, Kazuma Nakazawa, Shinichi Iwasaki, Rieko Iwasaki, Yuji Takeda, Masaki Yoshida
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Publication number: 20070149653Abstract: A puncture sealing agent includes at least a rubber latex solution, a short fiber and a clay base viscosity improver, the viscosity of the rubber latex solution after addition of the clay base viscosity improver being 3 to 6000 mPa·s in a range of +50 to ?20° C.Type: ApplicationFiled: December 6, 2004Publication date: June 28, 2007Inventors: Daisuke Sugio, Ryuji Izumoto, Kazuma Nakazawa
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Publication number: 20070102087Abstract: A manufacturing method for annular run-flat tire support which has a supporting part and a leg part, and which, at the time of run-flat running, is capable of carrying load, comprises the steps of supplying said supporting part and said leg part, applying a bonding agent including a chemical conversion treatment to the bonding region of the radial-direction inside end part of said supporting part that is provided for bonding to said leg part, and bonding between said radial-direction inside end part and said leg part. Thereby, a manufacturing method for run-flat tire support which maintains a high bondability between the supporting part and the leg part, and is excellent in durability, and a run-flat tire support are provided.Type: ApplicationFiled: November 25, 2004Publication date: May 10, 2007Applicant: BRIDGESTONE CORPORATIONInventors: Shinichi Iwasaki, Kazuma Nakazawa, Humitaka Ino, Yoshikatsu Hatakeyama, Shintaro Hayashi
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Publication number: 20070084538Abstract: A production method for a supporting member without a joint, a supporting member without a joint, and a pneumatic run flat tire comprising the supporting member are obtained. The shell without a joint can be obtained by shaping a cylindrical member having a bottom part out of a metal plate by the deep drawing process, removing an opening part side and the bottom part side of the cylindrical member, and curving the cylindrical member into a shape comprising a convex part at the axial direction middle part of the cylindrical member projecting to the outside in the radial direction.Type: ApplicationFiled: November 12, 2004Publication date: April 19, 2007Inventors: Kazuma Nakazawa, Daisuke Sugio, Humitaka Ino, Ryuji Izumoto, Shinichi Iwasaki, Narukuni Hirata
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Publication number: 20060196589Abstract: The purpose of the present invention is to provide a support, a support manufacturing method, and a pneumatic run-flat tire by which predetermined strength is ensured while lightening is achieved. An aluminum tube 54 is electromagnetically formed and a support (supporting portion) is manufactured. Due to this, process hardening can be avoided and it can be formed in the desired shape. Further, at this time, due to exhaust holes 64 provided in the metal molds 52A, 52B, discharging of the air intervening between the metal molds 52A, 52B and the aluminum tube 54 at the time of forming is performed, and the support can be formed with good precision. The support 16 having the shell 26 made from an aluminum alloy formed in this manner is formed in a predetermined shape with good precision while being sufficiently lightened, and if a run-flat tire including this support 16 is installed on a vehicle, the gas mileage and handling of the vehicle can be improved.Type: ApplicationFiled: September 17, 2003Publication date: September 7, 2006Applicant: Bridgestone CorporationInventors: Ryuji Izumoto, Kazuma Nakazawa, Fumitaka Ino, Narukuni Hirata
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Publication number: 20060142420Abstract: The present invention is directed to provide a puncture-sealant that can maintain high sealing ability and is excellent in practicality. The invention is a puncture-sealant for sealing a hole in a punctured tire, the puncture-sealant including: (1) at least one type of rubber latex selected from the group consisting of SBR latex, NBR latex, carboxyl-modified SBR latex and carboxyl-modified NBR latex; (2) an antifreezing agent; and (3) at least one of a short fiber or a resin adhesive that is compatible with the rubber latex.Type: ApplicationFiled: November 25, 2003Publication date: June 29, 2006Applicant: BRIDGESTONE CORPORATIONInventors: Kazuma Nakazawa, Hideshi Yanagi, Ryuji Izumoto, Shinichi Iwasaki
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Publication number: 20040131895Abstract: The present invention provides a process for forming an antifouling coating containing a photocatalyst and amorphous titanium peroxide with substantially no photocatalytic capability provided on a treatment face of a substrate having a surface made of a plastic or a rubber, including a step of performing dry treatment for introducing a hydrophilic group to the treatment face of the substrate, and a step of forming the antifouling coating by applying an aqueous coating agent containing the photocatalyst and the amorphous titanium peroxide with substantially no photocatalytic capability to the treatment face of the substrate after the dry treatment. It is preferable that the above-mentioned dry treatment is a plasma discharge treatment, corona discharge treatment or ultraviolet irradiation treatment. The present invention also provides an antifouling material having an antifouling coating formed by the process for forming an antifouling coating of the present invention.Type: ApplicationFiled: September 22, 2003Publication date: July 8, 2004Inventors: Narukuni Hirata, Kazuma Nakazawa, Ryuji Izumoto, Shinichi Iwasaki, Daisuke Sugio, Fumitaka Ino
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Patent number: 5578670Abstract: A magnetic powder for bonded magnets is obtained by subjecting starting magnetic particles to agitation in a high speed air stream whereby individual particles are mechanically impacted with one another by the action of the stream. A magnetic composition comprising the magnetic powder and a resin binder is also described wherein the magnetic powder can be highly packed in the resin binder to ensure good fluidity of the composition. The magnetic composition can be prepared by mixing magnetic particles and a resin binder powder, subjecting the mixture to agitation in a high speed air stream for impactness of the particles and heading the mixture or by subjecting magnetic particles to agitation in a high speed air stream, mixing the agitated particles with a powder of a resin binder and heading the resultant mixture.Type: GrantFiled: May 17, 1995Date of Patent: November 26, 1996Assignee: Bridgestone CorporationInventors: Kazuma Nakazawa, Munehiko Kato, Toshikazu Shinogaya