Inventor
Tutomu Iwatani
Inventor
Osaka, JP
Overview
Patents· 13 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 bonds32%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests29%
C08LCompositions of macromolecular compounds18%
Y10TTechnical subjects covered by former us classification9%
H01BCables6%
C08JWorking-up3%
C09JAdhesives3%
PatentTitleYear
6,255,425'Syndiotactic polypropylene copolymer and extruded polypropylene articles'20016,121,394'Metallocene-catalyzed olefin polymerization in the absence of aluminoxane'20005,573,840'Polymeric insulating material and formed article making use of the material'19965,476,709'Polymeric insulating material and formed article making use of the material'19955,428,127'Preparation process of syndiotactic polyproplene'19955,314,956'Polypropylene resin compositions of high syndiotacticity and preparation process thereof'19945,266,641'Butene-1 copolymers and resin compositions containing the same'19935,219,968'Propylene copolymer'19935,212,247'Polypropylene resin compositions of high syndiotacticity and preparation process thereof'19935,206,324'Butene-1 copolymer and resin composition containing the same'19935,175,208'Method for preparing block copolymers of propylene'19925,169,924'Copolymer of propylene and butene-1'19925,157,092'Polymer of 4-methylpentene-1'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–1996Patents assigned to MITSUI TOATSU CHEMICALS (11)· patent assignee history
1992–2001Based in Osaka, JP· patent location history
1992–1993Based in Takaishi, JP· patent location history
2000–2001Patents assigned to MITSUI CHEMICALS INC (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MITSUI TOATSU CHEMICALS | 11 | 1992–1996 |
| MITSUI CHEMICALS INC | 2 | 2000–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 9 | 1992–2001 |
| Takaishi, JP | 4 | 1992–1993 |