Inventor
Stefan Hess
Inventor
Gross-Gerau, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds25%
C04BLime, magnesia13%
C08JWorking-up13%
B01DSeparation6%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients6%
C08LCompositions of macromolecular compounds6%
C09JAdhesives6%
C09KMaterials for miscellaneous applications, not provided for elsewhere6%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
8,993,796'Process for the manufacturing of vinyl acetate'20157,301,048'Process for isolating vinyl acetate'20077,202,377'Process for preparing vinyl acetate'20076,228,226'Process for working up crude, liquid vinyl acetate'20015,907,011'Heterogeneous polyvinyl ester dispersions and powders'19995,763,508'Dispersion powders and method of preparation and use thereof'19985,747,578'Heterogeneous vinyl acetate/ethylene dispersion'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998–1999Patents assigned to CLARIANT GMBH (3)· patent assignee history
1998–2015Based in Gross-Gerau, DE· patent location history
2001Patents assigned to CELANESE GMBH (1)· patent assignee history
2001Based in Gross-Berau, DE· patent location history
2007Patents assigned to CELANESE CHEM EUROPE GMBH (2)· patent assignee history
2015Patents assigned to BAYER MICHAEL J (1)· patent assignee history
2015Patents assigned to CELANESE INT CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CLARIANT GMBH | 3 | 1998–1999 |
| CELANESE CHEM EUROPE GMBH | 2 | 2007 |
| BAYER MICHAEL J | 1 | 2015 |
| CELANESE GMBH | 1 | 2001 |
| CELANESE INT CORP | 1 | 2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gross-Gerau, DE | 6 | 1998–2015 |
| Gross-Berau, DE | 1 | 2001 |