Patents by Inventor Hideyuki Murakita

Hideyuki Murakita 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).

  • Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst
    Patent number: 7368516
    Abstract: A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: (iii) a halogenated inorganic compound, (iv) a specific alkyl group-containing compound, (v) a combination of a halogenated inorganic compound with a specific alkyl group-containing compound, (vi) an amine compound and/or an amide compound, and (vii) a combination of an amine compound and/or an amide compound with a specific alkyl group-containing compound.
    Type: Grant
    Filed: March 28, 2005
    Date of Patent: May 6, 2008
    Assignee: Tosoh Corporation
    Inventors: Toru Yoshida, Toshihide Yamamoto, Hisanori Okada, Hideyuki Murakita
  • Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst
    Publication number: 20050187419
    Abstract: A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: (iii) a halogenated inorganic compound, (iv) a specific alkyl group-containing compound, (v) a combination of a halogenated inorganic compound with a specific alkyl group-containing compound, (vi) an amine compound and/or an amide compound, and (vii) a combination of an amine compound and/or an amide compound with a specific alkyl group-containing compound.
    Type: Application
    Filed: March 28, 2005
    Publication date: August 25, 2005
    Applicant: TOSOH CORPORATION
    Inventors: Toru Yoshida, Toshihide Yamamoto, Hisanori Okada, Hideyuki Murakita
  • Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst
    Patent number: 6900152
    Abstract: A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from: (iii) a halogenated inorganic compound, (iv) a specific alkyl group-containing compound, (v) a combination of a halogenated inorganic compound with a specific alkyl group-containing compound, (vi) an amine compound and/or an amide compound, and (vii) a combination of an amine compound and/or an amide compound with a specific alkyl group-containing compound.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: May 31, 2005
    Assignee: Tosoh Corporation
    Inventors: Toru Yoshida, Toshihide Yamamoto, Hisanori Okada, Hideyuki Murakita
  • Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst
    Publication number: 20020035029
    Abstract: A catalyst used for trimerization of ethylene into 1-hexene is descrobed, which comprises (i) a specific organometallic complex having a neutral multidentate ligand having a tripod structure, (ii) an alkylaluminoxane, and an optional ingredient selected from:
    Type: Application
    Filed: September 28, 2001
    Publication date: March 21, 2002
    Applicant: TOSOH CORPORATION
    Inventors: Toru Yoshida, Toshihide Yamamoto, Hisanori Okada, Hideyuki Murakita
  • Catalyst for trimerization of ethylene and process for trimerizing ethylene using the catalyst
    Patent number: 6337297
    Abstract: A catalyst for trimerization of ethylene is disclosed which comprises (a) a chromium complex having a neutral multidentate ligand having a tripod structure, represented by the formula, ACrJnQ3-n wherein A is a neutral multidentate ligand having a tripod structure, J is a carbonyl ligand or halogen, n is an integer of 0-3, and Q is at least one member selected from hydrogen, a C1-C10 hydrocarbon group, a C1-C10 carboxylate group, a C3-C10 diketonato group, an amide group, an imide group, an C1-C10 alkoxide group, a C1-C10 thioalkoxide group, an C6-C15 arene ligand, an C2-C10 alkene ligand, an C2-C15 alkyne ligand, an amine ligand, an imine ligand, an isonitrile ligand, a phosphine ligand, a phosphine oxide ligand, a phosphite ligand, an ether ligand, a sulfide ligand, a sulfone ligand and a sulfoxide ligand, and (b) a metal alkyl compound.
    Type: Grant
    Filed: December 9, 1999
    Date of Patent: January 8, 2002
    Assignee: Tosoh Corporation
    Inventors: Hideyuki Mimura, Motohiro Oguri, Toshihide Yamamoto, Hideyuki Murakita, Hisanori Okada, Toru Yoshida