Inventor
Christian Steffens
Inventor
Köln, 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 compounds47%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry20%
B01DSeparation7%
B01FMixing, e.g. dissolving, emulsifying or dispersing7%
B01LChemical or physical laboratory apparatus for general use7%
C01BNon-metallic elements7%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds7%
PatentTitleYear
10,875,827Process for preparing an isocyanate by partly adiabatic phosgenation of the corresponding amine202010,851,048Process for preparing an isocyanate by partly adiabatically operated phosgenation of the corresponding amine202010,815,193Process for providing hydrogen chloride for chemical reactions202010,112,892Process for preparing polyisocyanates20189,272,988'Method for producing diisocyanates by phosgenating diamine suspensions'20168,079,752'Process and mixing unit for the preparation of isocyanates by phosgenation of primary amines'20117,368,595'Process for the production of light-colored isocyanates'2008Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2008–2016Patents assigned to BAYER MATERIALSCIENCE AG (3)· patent assignee history
2008–2018Based in Köln, DE· patent location history
2011Patents assigned to BOEHM MATTHIAS (1)· patent assignee history
2011Patents assigned to GRUENEWALD MARCUS (1)· patent assignee history
2011Patents assigned to KELLER-KILLEWALD MANFRED (1)· patent assignee history
2016–2020Patents assigned to COVESTRO DEUTSCHLAND AG (5)· patent assignee history
2020Based in Cologne, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| COVESTRO DEUTSCHLAND AG | 5 | 2016–2020 |
| BAYER MATERIALSCIENCE AG | 3 | 2008–2016 |
| BOEHM MATTHIAS | 1 | 2011 |
| GRUENEWALD MARCUS | 1 | 2011 |
| KELLER-KILLEWALD MANFRED | 1 | 2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Köln, DE | 4 | 2008–2018 |
| Cologne, DE | 3 | 2020 |