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Yoshiyuki ISHIHAMA
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Patents Grants
last 30 patents
Information
Patent Grant
Ethylene-based polymer, polyethylene-based resin composition and us...
Patent number
11,643,485
Issue date
May 9, 2023
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Metallocene compound, catalyst component for olefin polymerization...
Patent number
11,485,808
Issue date
Nov 1, 2022
Japan Polyethylene Corporation
Tsutomu Sakuragi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Metallocene compound, catalyst component for olefin polymerization...
Patent number
10,995,167
Issue date
May 4, 2021
Japan Polyethylene Corporation
Tsutomu Sakuragi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Metallocene compound, catalyst component for olefin polymerization...
Patent number
10,919,994
Issue date
Feb 16, 2021
Japan Polyethylene Corporation
Tsutomu Sakuragi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Ethylene-based polymer, polyethylene-based resin composition and us...
Patent number
10,633,471
Issue date
Apr 28, 2020
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene-α-olefin copolymer and olefin resin composition
Patent number
10,066,036
Issue date
Sep 4, 2018
Japan Polyethylene Corporation
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene-α-olefin copolymer and olefin resin composition
Patent number
10,066,037
Issue date
Sep 4, 2018
Japan Polyethylene Corporation
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene-based polymer, polyethylene-based resin composition and us...
Patent number
9,975,972
Issue date
May 22, 2018
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene-α-olefin copolymer and olefin resin composition
Patent number
9,963,525
Issue date
May 8, 2018
Japan Polyethylene Corporation
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene-based polymer, polyethylene-based resin composition and us...
Patent number
9,309,340
Issue date
Apr 12, 2016
Japan Polyethylene Corporation
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Propylene-based polymer, production method therefor, composition us...
Patent number
8,080,624
Issue date
Dec 20, 2011
Japan Polypropylene Corporation
Masaaki Ito
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene polymers
Patent number
6,953,831
Issue date
Oct 11, 2005
Japan Polychem Corporation
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Catalyst for olefin polymerization and method of polymerization of...
Patent number
6,943,227
Issue date
Sep 13, 2005
Japan Polypropylene Corporation
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Component of catalyst for olefin polymerization
Patent number
6,677,411
Issue date
Jan 13, 2004
Japan Polychem Corporation
Hideshi Uchino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Ethylene/α-olefin copolymer and film made thereof
Patent number
6,632,911
Issue date
Oct 14, 2003
Japan Polychem Corporation
Kuninori Takahashi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing olefin polymer
Patent number
6,353,063
Issue date
Mar 5, 2002
Japan Polychem Corporation
Masafumi Shimizu
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
METALLOCENE COMPOUND, CATALYST COMPONENT FOR OLEFIN POLYMERIZATION...
Publication number
20210122856
Publication date
Apr 29, 2021
JAPAN POLYETHYLENE CORPORATION
Tsutomu SAKURAGI
C07 - ORGANIC CHEMISTRY
Information
Patent Application
ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND US...
Publication number
20200031965
Publication date
Jan 30, 2020
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METALLOCENE COMPOUND, CATALYST COMPONENT FOR OLEFIN POLYMERIZATION...
Publication number
20190092887
Publication date
Mar 28, 2019
JAPAN POLYETHYLENE CORPORATION
Tsutomu SAKURAGI
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METALLOCENE COMPOUND, CATALYST COMPONENT FOR OLEFIN POLYMERIZATION...
Publication number
20190010265
Publication date
Jan 10, 2019
JAPAN POLYETHYLENE CORPORATION
Tsutomu SAKURAGI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND US...
Publication number
20180237565
Publication date
Aug 23, 2018
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ETHYLENE-a-OLEFIN COPOLYMER AND OLEFIN RESIN COMPOSITION
Publication number
20170114165
Publication date
Apr 27, 2017
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki ISHIHAMA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ETHYLENE-a-OLEFIN COPOLYMER AND OLEFIN RESIN COMPOSITION
Publication number
20170101490
Publication date
Apr 13, 2017
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki ISHIHAMA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ETHYLENE-A-OLEFIN COPOLYMER AND OLEFIN RESIN COMPOSITION
Publication number
20170101491
Publication date
Apr 13, 2017
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki ISHIHAMA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND US...
Publication number
20160244544
Publication date
Aug 25, 2016
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
ETHYLENE-BASED POLYMER, POLYETHYLENE-BASED RESIN COMPOSITION AND US...
Publication number
20140194277
Publication date
Jul 10, 2014
JAPAN POLYETHYLENE CORPORATION
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
PROPYLENE-BASED POLYMER, PRODUCTION METHOD THEREFOR, COMPOSITION US...
Publication number
20100227987
Publication date
Sep 9, 2010
JAPAN POLYPROPYLENE CORPORATION
Masaaki Ito
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Catalyst for olefin polymerization and method of polymerization of...
Publication number
20040176242
Publication date
Sep 9, 2004
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Ethylene polymer
Publication number
20040048993
Publication date
Mar 11, 2004
Yoshiyuki Ishihama
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Component of catalyst for olefin polymerization
Publication number
20030027950
Publication date
Feb 6, 2003
Hideshi Uchino
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...