Inventor

Stephen Challenger

Inventor
Sandwich, GB

Overview

7→
Patents
1992–2005
Patent span
Chemistry
Primary field (CPC C)

Patents· 7 as inventor

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

C07Cprimary
C07CAcyclic or carbocyclic compounds55%
C07DHeterocyclic compounds27%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations9%
Y02PClimate change mitigation technologies in the production or processing of goods9%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2005Patents assigned to PFIZER (7)· patent assignee history
1992Based in Walmer, GB· patent location history
1997–2005Based in Sandwich, GB· patent location history
1998Based in Kingsdown, GB· patent location history
1998Based in New York, NY, US· patent location history
2001Based in Kent, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PFIZER71992–2005
Locations
LocationPatentsSpan
Sandwich, GB31997–2005
Kent, GB12001
Kingsdown, GB11998
New York, New York, US11998
Walmer, GB11992