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For the Inventor, By the Inventor

Yamaguchi, Japan

Masatoshi Nitabaru

USPTO Granted Patents = 16


Average Co-Inventor Count = 6.4

ph-index = 11

Forward Citations = 372(Granted Patents)


Location History:

  • Hiroshima, JP (1988 - 1989)
  • Kuga, JP (1994)
  • Waki, JP (1998)
  • Kuga-gun, JP (1997 - 2001)
  • Yamaguchi, JP (1993 - 2007)

Company Filing History:

goldMedal8 out of 1,786 
 
Mitsui Chemicals, Inc.
 patents
silverMedal7 out of 1,008 
 
Mitsui Petrochemical Industries, Ltd.
 patents
bronzeMedal1 out of 3 
 
Mitsui Petrochemical Industries Co., Ltd.
 patents

Years Active: 1988-2007

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16 patents (USPTO):Explore Patents
1. 7300903 - Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and α-olefin/conjugated diene copolymers (2007-11-27),
2. 6962890 - Olefin polymerization catalyst and process for olefin polymerization using the olefin polymerization catalyst (2005-11-08),
3. 6875718 - Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and α-olefin/conjugated diene copolymers (2005-04-05),
4. 6770723 - &agr;-olefin/conjugated diene copolymers (2004-08-03),
5. 6593266 - Olefin polymerization catalyst and polymerization process (2003-07-15),
6. 6451728 - Olefin polymerization catalyst and process for olefin polymerization (2002-09-17),
7. 6399724 - Catalyst for olefin polymerization and method of polymerizing olefin (2002-06-04),
8. 6309997 - Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and &agr;-olefin/conjugated diene copolymers (2001-10-30),
9. 5723640 - Transition metal compound having indenyl-containing metallocene (1998-03-03),
10. 5710223 - Process for polymerizing propylene by using a novel metallocene catalyst (1998-01-20),
11. 5658997 - Process for polymerizing propylene by using a novel metallocene catalyst (1997-08-19),
12. 5629254 - Substituted indenyl ring containing metallocene catalyst for propylene (1997-05-13),
13. 5360921 - Process for preparing cyclopentadienyl group-containing silicon compound (1994-11-01),
14. 5210065 - Color-forming recording material (1993-05-11),
15. 4835325 - Process for producing hydroxybenzenes (1989-05-30),

Title: Innovations of Masatoshi Nitabaru in Olefin Polymerization

Introduction

Masatoshi Nitabaru is a prominent inventor based in Yamaguchi, Japan. He has made significant contributions to the field of polymer chemistry, particularly in olefin polymerization. With a total of 16 patents to his name, Nitabaru's work has advanced the understanding and application of polymerization catalysts.

Latest Patents

Nitabaru's latest patents focus on olefin polymerization catalysts and processes. One of his notable inventions provides a process using olefin polymerization catalysts that exhibit excellent polymerization activities. These catalysts contain a transition metal compound and at least one organometallic compound, organoaluminum oxy-compound, or a compound that reacts with the transition metal compound to form an ion pair. This innovative process is particularly useful in producing α-olefin/conjugated diene copolymers with specific properties. Another patent details an olefin polymerization catalyst that demonstrates high polymerization activity at elevated temperatures. This catalyst comprises a transition metal compound characterized by a specific formula, ensuring effective polymerization.

Career Highlights

Throughout his career, Masatoshi Nitabaru has worked with leading companies in the chemical industry. He has been associated with Mitsui Chemicals, Inc. and Mitsui Petrochemical Industries, Ltd., where he has contributed to various research and development projects. His expertise in polymer chemistry has positioned him

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