Inventor
David Karl Schisla
Inventor
Amsterdam, NL
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 bonds38%
B01DSeparation13%
C07CAcyclic or carbocyclic compounds8%
C11DDetergent compositions8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
A61KPreparations for medical, dental or toiletry purposes4%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium4%
C07GCompounds of unknown constitution4%
C07HSugars4%
C07KPeptides4%
PatentTitleYear
10,023,607Purification of biological conjugates by size exclusion chromatography20187,390,856'Method for making selectively hydrogenated block copolymers of vinyl aromatic hydrocarbons and conjugated dienes'20087,166,679'Conjugated diene polymers and copolymer blocks having high vinyl content prepared using mixed microstructure control agents and process for preparing same'20076,262,145'Process for the extraction of material from multi-phase systems'20016,228,947'Deprotection of polymers prepared with silyloxy protected functional initiators by reaction with aqueous fluoroboric acid'20016,217,798'Method for synthesis of a dilithium diisopropenylbenzene-based diinitiator'2001H0001956'Enhanced hydrogenation catalyst removal from block copolymers by reduction in polymer cement viscosity by increasing the vinyl content of the block copolymers'20016,184,307'Minimum residence time hydrogenation process for polyisoprene-polybutadiene block copolymers'20016,103,846'Process for making anionic polymeric di-and polyfunctional polymers using protected functional initiators'20006,043,299'Process for the extraction of material from multi-phase systems'20005,427,717'Secondary alkyl sulfate/zeolite-containing surfactant compositions'19955,349,101'Process for the preparation of secondary alkyl sulfate-containing surfactant compositions'19945,160,627'Process for making microporous membranes having gel-filled pores, and separations methods using such membranes'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992Patents assigned to HOECHST CELANESE CORP (1)· patent assignee history
1992Based in St. Louis, MO, US· patent location history
1994–2001Patents assigned to SHELL OIL CO (9)· patent assignee history
1994–1995Based in Houston, TX, US· patent location history
2000–2001Based in Amsterdam, NL· patent location history
2000–2001Based in Sugar Land, TX, US· patent location history
2007Patents assigned to KRATON POLYMERS LLC (1)· patent assignee history
2007–2018Based in Pleasant Prairie, WI, US· patent location history
2008Patents assigned to KRATON POLYMERS US LLC (1)· patent assignee history
2018Patents assigned to ABBOTT LAB (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SHELL OIL CO | 9 | 1994–2001 |
| ABBOTT LAB | 1 | 2018 |
| HOECHST CELANESE CORP | 1 | 1992 |
| KRATON POLYMERS LLC | 1 | 2007 |
| KRATON POLYMERS US LLC | 1 | 2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Amsterdam, NL | 4 | 2000–2001 |
| Pleasant Prairie, WI, US | 3 | 2007–2018 |
| Sugar Land, Texas, US | 3 | 2000–2001 |
| Houston, Texas, US | 2 | 1994–1995 |
| St. Louis, MO, US | 1 | 1992 |