Inventor
John L. Sands
Inventor
West Lafayette, IN, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds30%
A61KPreparations for medical, dental or toiletry purposes20%
C07DHeterocyclic compounds20%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds20%
Y02PClimate change mitigation technologies in the production or processing of goods10%
PatentTitleYear
5,328,983'Process for purifying brominated polystyrene'19944,879,353'Bromination of polystyrene using bromine as the reaction solvent'19894,327,227'Process for producing purified brominated aromatic compounds'19824,287,373'Perbromination of phenol and diphenyl ether at elevated temperature using bromine as the reaction medium'19814,208,419'N-Heterocyclic ureas as immune regulants'19804,171,364'N-heterocyclic ureas as immune regulants'19794,160,112'Process for the isolation of pentabromophenol'19794,153,709'N-Heterocyclic ureas as immune regulants'19794,088,768'N-heterocyclic ureas as immune regulants'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1980Patents assigned to LILLY CO ELI (4)· patent assignee history
1978–1994Based in West Lafayette, IN, US· patent location history
1979–1994Patents assigned to GREAT LAKES CHEMICAL CORP (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GREAT LAKES CHEMICAL CORP | 5 | 1979–1994 |
| LILLY CO ELI | 4 | 1978–1980 |
Locations
| Location | Patents | Span |
|---|---|---|
| West Lafayette, IN, US | 9 | 1978–1994 |