Inventor
John B Brownell
Inventor
Derby, GB
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B23Kprimary
B23KSoldering or unsoldering17%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy17%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution17%
Y02PClimate change mitigation technologies in the production or processing of goods17%
C01BNon-metallic elements11%
F01DNon-positive displacement machines or engines, e.g. steam turbines11%
Y10TTechnical subjects covered by former us classification11%
PatentTitleYear
7,419,082'Friction welding process'20086,524,072'Disk for a blisk rotary stage of a gas turbine engine'20036,095,402'Method for the manufacture or repair of a blisk by linear friction welding'20005,595,833'Solid oxide fuel cell stack'19975,554,454'Solid oxide fuel cell stack'19965,486,428'Solid oxide fuel cell stack'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2008Patents assigned to ROLLS ROYCE PLC (6)· patent assignee history
1996–1997Based in Derbyshire, GB· patent location history
2000–2008Based in Derby, GB· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ROLLS ROYCE PLC | 6 | 1996–2008 |
Locations
| Location | Patents | Span |
|---|---|---|
| Derby, GB | 3 | 2000–2008 |
| Derbyshire, GB | 3 | 1996–1997 |