Inventor
John W. Johnston
Inventor
Kingwood, TX, US
Overview
Patents· 8 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 energy19%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution19%
C01BNon-metallic elements13%
H10NElectric solid-state devices not otherwise provided for13%
B63BShips or other waterborne vessels6%
B63HMarine propulsion or steering6%
F01NGas-flow silencers or exhaust apparatus for machines or engines in general6%
G01VGeophysics6%
H01LSemiconductor devices6%
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines6%
PatentTitleYear
9,281,461'Thermoelectric devices and applications for the same'20168,795,912'Systems and processes for operating fuel cell systems'20148,632,922'Systems and processes for operating fuel cell systems'20148,563,186'Systems and processes of operating fuel cell systems'20138,455,751'Thermoelectric devices and applications for the same'20136,401,590'Exhaust blockage system for engine shut down'20024,350,110'Integrated faired towline with integral locking feature'19824,047,592'Self-driven underwater noisemaking device'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977Based in Suitland, MD, US· patent location history
1982Based in Gaithersburg, MD, US· patent location history
2002Based in Germantown, MD, US· patent location history
2013–2014Patents assigned to CUI JINGYU (3)· patent assignee history
2013–2014Patents assigned to ENGWALL ERIK EDWIN (3)· patent assignee history
2013–2014Patents assigned to JOHNSTON JOHN WILLIAM (3)· patent assignee history
2013–2014Patents assigned to JOSHI MAHENDRA LADHARAM (3)· patent assignee history
2013–2014Patents assigned to SHELL OIL CO (3)· patent assignee history
2013–2014Based in Kingwood, TX, US· patent location history
2013–2016Based in Yakima, WA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CUI JINGYU | 3 | 2013–2014 |
| ENGWALL ERIK EDWIN | 3 | 2013–2014 |
| JOHNSTON JOHN WILLIAMself | 3 | 2013–2014 |
| JOSHI MAHENDRA LADHARAM | 3 | 2013–2014 |
| SHELL OIL CO | 3 | 2013–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kingwood, Texas, US | 3 | 2013–2014 |
| Yakima, Washington, US | 2 | 2013–2016 |
| Germantown, Maryland, US | 1 | 2002 |
| Gaithersburg, Maryland, US | 1 | 1982 |
| Suitland, Maryland, US | 1 | 1977 |