1
David F Lawson, Koichi Morita, Yoichi Ozawa, Mark L Stayer Jr, Ryota Fujio: Soluble anionic polymerization initiators and preparation thereof. Bridgestone Corporation, Daniel N Hall, July 12, 1994: US05329005 (77 worldwide citation)

The present invention is directed toward anionic polymerization initiators which are soluble in hydrocarbon solvents. The initiators include a lithio amine having the general formula ALi. The component A is a dialkyl or dicycloalkyl amine radical or a cyclic amine. The invention is also directed tow ...


2
Yoichi Ozawa, H Jerrold Miller, Koji Masaki, Tatsuo Fujimaki, Takuo Sone, Iwakazu Hattori, Koichi Morita: Modified polymers prepared with lanthanide-based catalysts. Bridgestone Corporation, Arthur M Reginelli, January 31, 2006: US06992147 (69 worldwide citation)

A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst, and reacting the pseudo-living polymer with at least one functionalizing agent defined by the formula (I) where A is a ...


3
Yoichi Ozawa, H Jerrold Miller, Koji Masaki: Modified polymers prepared with lanthanide-based catalysts. Bridgestone Corporation, Arthur M Reginelli, December 20, 2005: US06977281 (62 worldwide citation)

A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyst, where said pseudo-living polymer is characterized by having greater than about 85 percent of the polymer in the cis mic ...


4
Takashi Kitamura, David F Lawson, Koichi Morita, Yoichi Ozawa: Anionic polymerization initiators and reduced hysteresis products therefom. Bridgestone Corporation, Daniel N Hall, February 28, 1995: US05393721 (59 worldwide citation)

The present invention is directed toward artionic polymerization employing lithio amines mixed with an organic alkali metal compound and optionally, a chelating reagent. The lithio amines have the general formula (A)Li(SOL)y, where SOL is a solubilizing component, A is an alkyl, dialkyl, cycloalkyl ...


5
Steven Luo, Yoichi Ozawa, Koji Masaki, David Lawson: Lanthanide-based catalyst composition for the manufacture of polydienes. Bridgestone Corporation, Arthur M Reginelli, March 2, 2004: US06699813 (55 worldwide citation)

A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) an lanthanide compound, (b) an alkylating agent, (c) a nickel-containing compound, and optionally (d) a halogen-containing compound, with the proviso that the halogen-containing compound must be p ...


6
Yoichi Ozawa, Ryota Fujio: Process for preparing a block copolymer. Bridgestone Corporation, Sughrue Mion Zinn Macpeak & Seas, May 7, 1996: US05514753 (47 worldwide citation)

A block copolymer containing a non-polar polymer block and a polar polymer block was prepared by using an anionic polymerization initiator, by reacting an organic compound which can form an ate complex at the active end of the non-polar polymer block, the compound which contains a main group element ...


7
Steven Luo, William M Cole, Yoichi Ozawa: Bulk polymerization process for producing polydienes. Bridgestone Corporation, Arthur M Reginelli, August 22, 2006: US07094849 (45 worldwide citation)

A method of producing cis-1,4-polydienes, the method comprising the step of contacting conjugated diene monomer with a lanthanide-based catalyst system in the presence of less than 20% by weight of organic solvent based on the total weight of monomer, organic solvent, and resulting polymer, where th ...


8
Yoichi Ozawa, David M Roggeman, H Jerrold Miller, Koji Masaki, Steven Luo, Thomas A Antkowiak: Continuous process for the production of conjugated diene polymers having narrow molecular weight distribution and products therefrom. Bridgestone Corporation, Arthur M Reginelli, May 24, 2005: US06897270 (43 worldwide citation)

A continuous process for producing conjugated diene polymers comprising the steps of contacting, within an hydrocarbon solvent and within a continuous reactor, conjugated diene monomer and a catalyst composition prepared by combining: (a) a lanthanide compound, (b) an alkylating agent, and (c) a hal ...


9
Xiaorong Wang, Yoichi Ozawa, James E Hall: Polymeric nano-particles of flower-like structure and applications. Bridgestone Corporation, Meredith E Hooker, April 17, 2007: US07205370 (35 worldwide citation)

A flower-like nano-particle composition including a poly (alkenylbenzene) core and a poly (conjugated diene) or a poly(alkylene) surface layer is provided. The nano-particles have a mean average diameter less than about 100 nm and are substantially free of chain ends. The nano-particles can be modif ...


10
Toru Haneda, Akihiko Tsuruoka, Junichi Kamata, Tadashi Okabe, Keiko Takahashi, Kazumasa Nara, Shinichi Hamaoka, Norihiro Ueda, Toshiaki Wakabayashi, Yasuhiro Funahashi, Taro Semba, Naoko Hata, Yuji Yamamoto, Yoichi Ozawa, Naoko Tsukahara, Takashi Owa: Sulfonamide-containing heterocyclic compounds. Eisai, Birch Stewart Kolasch & Birch, September 7, 2004: US06787534 (32 worldwide citation)

The present invention provides a sulfonamide- or sulfonylurea-containing heterocyclic compounds. Specifically, it provides a heterocyclic compound represented by the formula (I), a pharmacologically acceptable salt thereof or a hydrate of them.