Inventor
Harvey E. Atwood
Inventor
Kingwood, TX, US
Overview
Patents· 12 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 bonds37%
C08LCompositions of macromolecular compounds11%
C10MLubricating compositions11%
C07CAcyclic or carbocyclic compounds7%
C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium7%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds7%
C08JWorking-up7%
C09KMaterials for miscellaneous applications, not provided for elsewhere7%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions4%
PatentTitleYear
7,625,979'Process for preparing block copolymer and resulting composition'20097,550,537'Organo-dilithium compound and process for preparing the same'20097,285,596'Anionic polymerization diinitiator and process for preparing same'20077,220,798'Process for preparing block copolymer and resulting composition'20077,009,000'Coupled styrenic block copolymers and process for preparing same'20066,221,968'Process for producing specific tapered block copolymers'2001H0001799'Star polymer viscosity index improver for oil compositions'19995,278,252'Solid viscosity index improvers which provide excellent low temperature viscosity'19945,223,579'Solid viscosity index improvers which provide excellant low temperature viscosity'19935,212,249'Method for preparing asymmetric radial polymers'19935,035,794'Isoprene recovery in the butyl rubber process'19914,921,924'Isoprene recovery in the butyl rubber process'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–1991Patents assigned to EXXON CHEMICAL PATENTS INC (2)· patent assignee history
1990–2009Based in Kingwood, TX, US· patent location history
1993–2001Patents assigned to SHELL OIL CO (5)· patent assignee history
2006–2009Patents assigned to KRATON POLYMERS US LLC (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KRATON POLYMERS US LLC | 5 | 2006–2009 |
| SHELL OIL CO | 5 | 1993–2001 |
| EXXON CHEMICAL PATENTS INC | 2 | 1990–1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kingwood, Texas, US | 12 | 1990–2009 |