Inventor

John R. Powell

Inventor
Burlington, MA, US

Overview

17→
Patents
1976–2016
Patent span
Electricity
Primary field (CPC H)

Patents· 17 as inventor

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

H01Mprimary
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy10%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution10%
C07HSugars8%
A61KPreparations for medical, dental or toiletry purposes5%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations5%
B08BCleaning in general5%
B63HMarine propulsion or steering5%
C07KPeptides5%
C08BPolysaccharides5%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general5%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1984Patents assigned to BROWN FINTUBE CO (2)· patent assignee history
1976–1984Based in Tulsa, OK, US· patent location history
1980Patents assigned to GEN MOTORS CORP (2)· patent assignee history
1980Based in Bellbrook, OH, US· patent location history
1995–1996Patents assigned to LITTLE INC A (4)· patent assignee history
1995–1996Based in Burlington, MA, US· patent location history
2013–2015Patents assigned to POWELL JOHN (3)· patent assignee history
2013–2015Patents assigned to SHARP ROBERT (2)· patent assignee history
2013–2016Based in Cambridgeshire, GB· patent location history
2013–2015Based in Santa Clarita, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
LITTLE INC A41995–1996
POWELL JOHNself32013–2015
BROWN FINTUBE CO21976–1984
GEN MOTORS CORP21980
SHARP ROBERT22013–2015
Locations
LocationPatentsSpan
Burlington, Massachusetts, US41995–1996
Cambridgeshire, GB22013–2016
Santa Clarita, California, US22013–2015
Tulsa, OK, US21976–1984
Bellbrook, OH, US21980