Inventor

Iwakazu Hattori

Inventor

Tokyo, JP

Overview

1984–2019

Patent span

Chemistry

Primary field (CPC C)

Patents· 32 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C08Fprimary

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds30%

C08CTreatment or chemical modification of rubbers23%

C08LCompositions of macromolecular compounds23%

C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients13%

B60CVehicle tyres4%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing1%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry1%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds1%

PatentTitleYear

10,428,161Method for producing modified solution-polymerized diene rubber to be blended with silica, and rubber composition containing same2019 9,644,052'Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents'2017 8,987,362'Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents'2015 8,618,199'Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents'2013 8,362,126'Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents'2013 7,750,087'Modified polymers prepared with lanthanide-based catalysts'2010 7,642,322'Functionalized high cis-1,4-polybutadiene prepared using novel functionalizing agents'2010 7,294,680'Method of producing conjugated diene polymers with narrow molecular weight distribution and polymer produced'2007 6,992,147'Modified polymers prepared with lanthanide-based catalysts'2006 6,887,929'Resin composition and golf ball'2005 6,838,538'Hydrogenated modified polymer, process for producing the same and composition containing the same'2005 6,838,526'Modified conjugated diene polymer and method of producing the same and rubber composition'2005 6,747,085'Conjugated diene polymer and rubber composition'2004 6,548,598'Thermoplastic resin composition'2003 6,391,990'Method of producing conjugated diene polymer'2002 6,291,596'Catalyst and process for hydrogenating olefinically unsaturated compound'2001 6,255,416'Method of producing conjugated diene polymers'2001 6,194,505'Rubber composition for solid golf ball and solid golf ball'2001 6,191,234'Conjugated diolefin-based copolymer rubber and composition thereof'2001 6,130,299'Method for preparing conjugated diene polymer'2000 5,548,045'Process for producing polybutadiene'1996 5,527,860'Process for producing a diolefin polymer or copolymer and a rubber composition containing such a diolefin polymer or copolymer'1996 5,432,232'Rubber compositions'1995 5,206,301'Hydrogenated block copolymer and composition comprising the same'1993 5,086,136'Process for producing high trans low vinyl conjugated diene (co)polymer'1992 5,064,910'Preparation of conjugated diene polymers modified with an organo-tin or germanium halide'1991 5,034,465'Rubber compositions'1991 5,017,636'Rubber compositions from modified trans-polybutadiene and rubber for tires'1991 4,933,401'Catalyst composition for polymerization of conjugated diene and process for producing conjugated diene polymer'1990 4,906,706'Modified conjugated diene polymer and process for production thereof'1990 4,894,409'Rubber composition'1990 4,433,109'Styrene-butadiene block copolymer'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1996Patents assigned to JAPAN SYNTHETIC RUBBER CO LTD (12)· patent assignee history

1990–2017Patents assigned to BRIDGESTONE CORP (11)· patent assignee history

1990–1996Based in Aichi, JP· patent location history

1991–2019Based in Tokyo, JP· patent location history

2000–2017Patents assigned to JSR CORP (14)· patent assignee history

2004Based in Toyko, JP· patent location history

2005Based in Mie, JP· patent location history

2013Patents assigned to FUJIMAKI TATSUO (2)· patent assignee history

2013Patents assigned to HATTORI IWAKAZU (2)· patent assignee history

2013–2017Based in Chuo-ku, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
JSR CORP	14	2000–2017
JAPAN SYNTHETIC RUBBER CO LTD	12	1984–1996
BRIDGESTONE CORP	11	1990–2017
FUJIMAKI TATSUO	2	2013
HATTORI IWAKAZUself	2	2013

Locations

Location	Patents	Span
Tokyo, JP	17	1991–2019
Aichi, JP	6	1990–1996
Chuo-ku, JP	3	2013–2017
Mie, JP	2	2005
Toyko, JP	1	2004