Patents by Inventor Yosuke Numao
Yosuke Numao 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: 6261649Abstract: A high-quality optical compensator for use in liquid crystal display elements can be prepared from a film comprising an end unit modified liquid crystalline polymer which has a monofunctional structural unit and which exhibits an optically positive uniaxiality, and, as needed, a liquid crystalline polymer which has a logarithmic viscosity at least 0.01 dl/g higher than that of the end unit modified liquid crystalline polymer and a glass transition point at least 5° C. higher than that of the end unit modified liquid crystalline polymer and which exhibits an optically positive uniaxiality, wherein a nematic hybrid orientation which is formed in the liquid crystal state is immobilized.Type: GrantFiled: January 16, 1998Date of Patent: July 17, 2001Assignee: Nippon Mitsubishi Oil CorporationInventors: Akira Takagi, Tadahiro Kaminade, Takuya Matsumoto, Yosuke Numao, Takayuki Hirayama, Masato Sone
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Patent number: 5824618Abstract: A catalyst component is disclosed for use in the homo- or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula M.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q, M.sup.1 being titanium a second compound of the formula M.sup.2 (OR.sup.3).sub.m R.sup.4.sub.n X.sup.2.sub.z-m-n, with M.sup.2 being a metal of Groups Ia-IIIa or IIb of the Periodic Table, and a third compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified organoaluminum compound to form a catalyst composition capable of providing controlled molecular weight, wide distribution thereof and other desirable qualities in the polymer product.Type: GrantFiled: June 6, 1995Date of Patent: October 20, 1998Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Tajima, Naoki Kataoka, Yosuke Numao, Takashi Seki, Kazuo Matsuura
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Patent number: 5795839Abstract: A process for the polymerization of olefinic hydrocarbons is carried out in the presence of a catalyst comprising a catalyst component derived from reacting a compound of the formula Me.sup.1 R.sup.1.sub.n X.sup.1.sub.4-n, a compound of the formula Me.sup.2 R.sup.2.sub.m X.sup.2.sub.z-m, an organocyclic compound having two or more conjugated double bonds and a carrier of inorganic or polymeric material, and a modified organoaluminum compound having Al--O--Al bonds, the resulting polyolefins having a relatively wide molecular weight distribution, a relatively narrow composition distribution and increased bulk density.Type: GrantFiled: June 5, 1995Date of Patent: August 18, 1998Assignee: Nippon Oil Co., Ltd.Inventors: Naoki Kataoka, Yosuke Numao, Takashi Seki, Yoshio Tajima, Kazuo Matsuura
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Patent number: 5707914Abstract: A process for the polymerization of olefinic hydrocarbons is carried out in the presence of a catalyst comprising a catalyst component derived from reacting a compound of the formula Me.sup.1 R.sup.1.sub.n X.sup.1.sub.4-n, a compound of the formula Me.sup.2 R.sup.2.sub.m X.sup.2.sub.z-m, an organocyclic compound having two or more conjugated double bonds and a carrier of inorganic or polymeric material, and a modified organoaluminum compound having Al--O--Al bonds, the resulting polyolefins having a relatively wide molecular weight distribution, a relatively narrow composition distribution and increased bulk density.Type: GrantFiled: June 5, 1995Date of Patent: January 13, 1998Assignee: Nippon Oil Co., Ltd.Inventors: Naoki Kataoka, Yosuke Numao, Takashi Seki, Yoshio Tajima, Kazuo Matsuura
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Patent number: 5677401Abstract: A process for the polymerization of olefinic hydrocarbons is carried out in the presence of a catalyst comprising a catalyst component derived from reacting a compound of the formula Me.sup.1 R.sup.1.sub.n X.sup.1.sub.4-n, a compound of the formula Me.sup.2 R.sup.2.sub.m X.sup.2.sub.z-m, an organocyclic compound having two or more conjugated double bonds and a carrier of inorganic or polymeric material, and a modified organoaluminum compound having Al--O--Al bonds, the resulting polyolefins having a relatively wide molecular weight distribution, a relatively narrow composition distribution and increased bulk density.Type: GrantFiled: June 7, 1995Date of Patent: October 14, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Naoki Kataoka, Yosuke Numao, Takashi Seki, Yoshio Tajima, Kazuo Matsuura
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Patent number: 5670588Abstract: A catalyst component is disclosed for use in the homo- or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q and a second compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified organoaluminum compound to form a catalyst composition capable of providing high molecular weight, wide distribution thereof and other desirable qualities in the polymer product.Type: GrantFiled: December 1, 1995Date of Patent: September 23, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Tajima, Naoki Kataoka, Yosuke Numao, Takashi Seki, Kazuo Matsuura
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Patent number: 5643845Abstract: A catalyst component is disclosed for use in the homo- or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q and a second compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified or organoaluminum compound to form a catalyst composition capable of providing high molecular weight, wide distribution thereof and other desirable qualities in the polymer product.Type: GrantFiled: November 4, 1994Date of Patent: July 1, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Tajima, Naoki Kataoka, Yosuke Numao, Takashi Seki, Kazuo Matsuura
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Patent number: 5625014Abstract: A process for the polymerization of olefinic hydrocarbons is carried out in the presence of a catalyst comprising a catalyst component derived from reacting a compound of the formula Me.sup.1 R.sup.1.sub.n X.sup.1.sub.4-n, a compound of the formula Me.sup.2 R.sup.2.sub.m X.sup.2.sub.z-m, an organocyclic compound having two or more conjugated double bonds and a carrier of inorganic or polymeric material, and a modified organoaluminum compound having Al--O--Al bonds, the resulting polyolefins having a relatively wide molecular weight distribution, a relatively narrow composition distribution and increased bulk density.Type: GrantFiled: June 6, 1995Date of Patent: April 29, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Naoki Kataoka, Yosuke Numao, Takashi Seki, Yoshio Tajima, Kazuo Matsuura
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Patent number: 5594082Abstract: A catalyst component is disclosed for use in the homo-or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q, a second compound of the formula Me.sup.2 (OR.sup.3).sub.m R.sup.4.sub.n X.sup.2.sub.z-m-n and a third compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified organoaluminum compound to form a catalyst composition capable of providing controlled molecular weight, wide distribution thereof and other desirable qualities in the polymer product.Type: GrantFiled: June 6, 1995Date of Patent: January 14, 1997Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Tajima, Naoki Kataoka, Yosuke Numao, Takashi Seki, Kazuo Matsuura
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Patent number: 5451555Abstract: A catalyst component is disclosed for use in the homo- or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q, a second compound of the formula Me.sup.2 (OR.sup.3).sub.m R.sup.4.sub.n X.sup.2.sub.z-m-n and a third compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified organoaluminum compound to form a catalyst composition capable of providing controlled molecular weight, wide distribution thereof and other desirable qualities in the polymer product.Type: GrantFiled: June 26, 1992Date of Patent: September 19, 1995Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Tajima, Naoki Kataoka, Yosuke Numao, Takashi Seki, Kazuo Matsuura
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Patent number: 5391660Abstract: Polyolefins having a high molecular weight, an appropriate molecular weight distribution and a relatively narrow composition distribution are prepared in high activity.The polymerization of an olefin or olefins is performed in the presence of a catalyst comprising a catalyst component and a modified organoaluminum compound, the catalyst component being prepared by mutually contacting (1) a compound of the general formula Me.sup.1 R.sup.1.sub.n X.sup.1.sub.4-n and (2) an alkali metal salt of cyclopentadiene or indene and optionally (3) a compound of the general formula Me.sup.2 R.sup.2.sub.m X.sup.2.sub.3-m, and the modified organoaluminum compound and water and containing Al--O--Al bond(s).Type: GrantFiled: January 12, 1993Date of Patent: February 21, 1995Assignee: Nippon Oil Company, LimitedInventors: Yosuke Numao, Yoshio Tajima
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Patent number: 5387567Abstract: A catalyst component is disclosed for use in the homo-or copolymerization of olefinic hydrocarbons. The catalyst component is comprised of a first compound of the formula Me.sup.1 (OR.sup.1).sub.p R.sup.2.sub.q X.sup.1.sub.4-p-q and a second compound which is an organocyclic compound having two or more conjugated double bonds. A process is also disclosed for the production of hydrocarbon polymers in which the above catalyst component is combined with a modified organoaluminum compound to form a catalyst composition capable of providing high molecular weight, wide distribution thereof and other desirable qualities in the polymer product.Type: GrantFiled: June 26, 1992Date of Patent: February 7, 1995Assignee: Nippon Oil Co., Ltd.Inventors: Yoshio Tajima, Naoki Kataoka, Yosuke Numao, Takashi Seki, Kazuo Matsuura
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Patent number: 5331071Abstract: A process for the polymerization of olefinic hydrocarbons is carried out in the presence of a catalyst comprising a catalyst component derived from reacting a compound of the formula Me.sup.1 R.sup.1.sub.n X.sup.1.sub.4-n, a compound of the formula Me.sup.2 R.sup.2.sub.m X.sup.2.sub.z-m, an organocyclic compound having two or more conjugated double bonds and a carrier of inorganic or polymeric material, and a modified organoaluminum compound having Al--O--Al bonds, the resulting polyolefins having a relatively wide molecular weight distribution, a relatively narrow composition distribution and increased bulk density.Type: GrantFiled: November 12, 1992Date of Patent: July 19, 1994Assignee: Nippon Oil Co., Ltd.Inventors: Naoki Kataoka, Yosuke Numao, Takashi Seki, Yoshio Tajima, Kazuo Matsuura