Patents by Inventor Nobumasa Arashiba
Nobumasa Arashiba 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: 9464183Abstract: This invention provides a rubber composition comprising 1-10 parts by mass of sulfur and 0.1-10 parts by mass of a compound represented by the following general formula (1) or a composition containing the compound as a main component based on 100 parts by mass of a rubber component as well as a pneumatic tire in which at least one of a carcass (4) and a belt (6) includes a layer composed of steel cords covered with a coating rubber, characterized in that the above rubber composition is used as the coating rubber covering the steel cords in at least one of the carcass (4) and the belt (6): (wherein R represents a divalent aliphatic group having a carbon number of 1-16 or a divalent aromatic group).Type: GrantFiled: February 25, 2011Date of Patent: October 11, 2016Assignee: BRIDGESTONE CORPORATIONInventors: Kazunori Kaneda, Yoshinori Kuriya, Kazuya Tsukamoto, Nobumasa Arashiba, Akinori Nagatomo, Kouki Oogaki, Takeshi Kobayashi
-
Publication number: 20110146886Abstract: This invention provides a rubber composition comprising 1-10 parts by mass of sulfur and 0.1-10 parts by mass of a compound represented by the following general formula (1) or a composition containing the compound as a main component based on 100 parts by mass of a rubber component as well as a pneumatic tire in which at least one of a carcass (4) and a belt (6) includes a layer composed of steel cords covered with a coating rubber, characterized in that the above rubber composition is used as the coating rubber covering the steel cords in at least one of the carcass (4) and the belt (6): (wherein R represents a divalent aliphatic group having a carbon number of 1-16 or a divalent aromatic group).Type: ApplicationFiled: February 25, 2011Publication date: June 23, 2011Applicants: BRIDGESTONE CORPORATION, MITSUI CHEMICALS, INC.Inventors: Kazunori KANEDA, Yoshinori KURIYA, Kazuya TSUKAMOTO, Nobumasa ARASHIBA, Akinori NAGATOMO, Kouki OOGAKI, Takeshi KOBAYASHI
-
Patent number: 7491840Abstract: This invention provides a compound represented by the following general formula (1) and capable of suppressing the blooming, which is observed in the compounding of the resorcin or the RF resin, as far as possible while maintaining the workability and high humidity-aged adhesion of the rubber composition obtained by compounding with rubber, reducing the deterioration of the adhesiveness during the storage of the rubber composition and stably developing the adhesiveness as well as the composition containing the above-mentioned compound as a main component: (wherein R represents a divalent aliphatic group having a carbon number of 1-16).Type: GrantFiled: February 24, 2006Date of Patent: February 17, 2009Assignee: Mitsui Chemicals, Inc.Inventors: Kazuya Tsukamoto, Nobumasa Arashiba, Akinori Nagatomo, Kouki Oogaki, Takeshi Kobayashi
-
Publication number: 20080047650Abstract: This invention provides a rubber composition comprising 1-10 parts by mass of sulfur and 0.1-10 parts by mass of a compound represented by the following general formula (1) or a composition containing the compound as a main component based on 100 parts by mass of a rubber component as well as a pneumatic tire in which at least one of a carcass (4) and a belt (6) includes a layer composed of steel cords covered with a coating rubber, characterized in that the above rubber composition is used as the coating rubber covering the steel cords in at least one of the carcass (4) and the belt (6): (wherein R represents a divalent aliphatic group having a carbon number of 1-16 or a divalent aromatic group).Type: ApplicationFiled: March 7, 2005Publication date: February 28, 2008Inventors: Kazunori Kaneda, Yoshinori Kuriya, Kazuya Tsukamoto, Nobumasa Arashiba, Akinori Nagatomo, Takeshi Kobayashi
-
Publication number: 20060205971Abstract: This invention provides a compound represented by the following general formula (1) and capable of suppressing the blooming, which is observed in the compounding of the resorcin or the RF resin, as far as possible while maintaining the workability and high humidity-aged adhesion of the rubber composition obtained by compounding with rubber, reducing the deterioration of the adhesiveness during the storage of the rubber composition and stably developing the adhesiveness as well as the composition containing the above-mentioned compound as a main component: (wherein R represents a divalent aliphatic group having a carbon number of 1-16).Type: ApplicationFiled: February 24, 2006Publication date: September 14, 2006Applicant: MITSUI CHEMICALS, INC.Inventors: Kazuya Tsukamoto, Nobumasa Arashiba, Akinori Nagatomo, Kouki Oogaki, Takeshi Kobayashi
-
Patent number: 4994586Abstract: A novel method for preparing an epoxy compound is disclosed which comprises the step of reacting an olefin compound having 4 to 16 carbon atoms with an organic hydroperoxide in an inactive solvent in the presence of a molybdenum compound and at least one metal halide selected from the group consisting of halides of alkali metals and alkaline earth metals, in order to form the corresponding epoxy compound. Typical examples of the aforesaid metal halide include sodium chloride, potassium iodide, sodium bromide and barium chloride. According to the present invention, the epoxy compound having 4 to 16 carbon atoms can be prepared in an extremely high yield.Type: GrantFiled: May 25, 1989Date of Patent: February 19, 1991Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Nobumasa Arashiba, Takashi Shimizu, Masaru Takeshita, Akira Otsu
-
Patent number: 4555583Abstract: Glyoxal may be produced with a high yield by bringing a gas, which has been formed by diluting ethylene glycol and molecular oxygen with an inert gas, into contact at a high temperature with a silver catalyst in the simultaneous presence of phosphorus or a phosphorus compound so as to effect the gas phase oxidation of the ethylene glycol.In the above process, it is possible to suppress the formation of glycolaldehyde, a reaction intermediate, and also to enhance the stability of the reaction by using silver powder having particle sizes of 1.times.10.sup.-3 mm or smaller as at least part of the silver catalyst.Type: GrantFiled: March 28, 1984Date of Patent: November 26, 1985Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Yoshiaki Toyoda, Kazuo Wakimura, Tadaharu Hase, Nobumasa Arashiba
-
Patent number: 4425255Abstract: A method for regenerating a catalyst containing molybdenum as an active component comprising subjecting a catalyst, which has been deactivated through the use for a reaction, with or without a molybdenum source added thereto, to a heat treatment in a reducing gas atmosphere under specific temperature conditions and then subjecting same to a further heat treatment in a gaseous atmosphere containing molecular oxygen and at specific temperature conditions.Type: GrantFiled: May 13, 1982Date of Patent: January 10, 1984Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yoshiaki Toyoda, Yoshihiro Ikeda, Nobumasa Arashiba