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Inventor

Rae Hartwell

Inventor
Surrey, CA

Overview

3→
Patents
1994–2018
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 3 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 energy22%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution22%
Y10TTechnical subjects covered by former us classification22%
E05BLocks11%
Y02TClimate change mitigation technologies related to transportation11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
PatentTitleYear
9,876,249Fuel cell stacks with increased natural frequency20186,862,801'Systems, apparatus and methods for isolating, compressing and/or retaining the structure of a fuel cell stack'20055,316,355'Integral door knob assembly with spring return'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994Patents assigned to MASCO CORP (1)· patent assignee history
1994–2018Based in Surrey, CA· patent location history
2005Patents assigned to BALLARD POWER SYSTEMS (1)· patent assignee history
2018Patents assigned to DAIMLER AG (1)· patent assignee history
2018Patents assigned to FORD MOTOR CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BALLARD POWER SYSTEMS12005
DAIMLER AG12018
FORD MOTOR CO12018
MASCO CORP11994
Locations
LocationPatentsSpan
Surrey, CA31994–2018