Inventor

Chester R. Willis

Inventor
Kingston, JM

Overview

15→
Patents
1976–1994
Patent span
Chemistry
Primary field (CPC C)

Patents· 15 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Dprimary
C07DHeterocyclic compounds43%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations14%
C07CAcyclic or carbocyclic compounds10%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients10%
C11DDetergent compositions10%
A61KPreparations for medical, dental or toiletry purposes5%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds5%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1978Patents assigned to SMITHKLINE CORP (10)· patent assignee history
1976–1979Patents assigned to LEVER BROTHERS LTD (3)· patent assignee history
1976–1978Based in Blackwood, NJ, US· patent location history
1977–1978Based in Kingston, JM· patent location history
1978–1979Based in Mapleshade, NJ, US· patent location history
1984–1994Patents assigned to HERCULES INC (2)· patent assignee history
1984Based in East Marlborough, PA, US· patent location history
1994Based in Kennett Square, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SMITHKLINE CORP101976–1978
LEVER BROTHERS LTD31976–1979
HERCULES INC21984–1994
Locations
LocationPatentsSpan
Kingston, JM71977–1978
Mapleshade, New Jersey, US21978–1979
Blackwood, New Jersey, US21976–1978
Kennett Square, Pennsylvania, US11994
East Marlborough, Pennsylvania, US11984