Inventor
Douglas Lynn Sprunger
Inventor
Middletown, IN, US
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F02Pprimary
F02PIgnition, other than compression ignition, for internal-combustion engines50%
F02DControlling combustion engines13%
H01TSpark gaps13%
Y02TClimate change mitigation technologies related to transportation13%
H01FMagnets6%
H05KPrinted circuits6%
PatentTitleYear
10,890,156Method for determining a need for changing a spark plug202110,006,432Dual coil ignition system20189,429,134'Dual coil ignition system'20167,778,002'Method and apparatus to reduce ring out in an ignition coil to allow for ion sense processing'20106,666,196'Ignition system having improved spark-on-make blocking diode implementation'20036,622,711'Ignition coil cassette assembly'20036,247,465'System and method for preventing spark-on-make in an internal combustion engine using manifold pressure'20015,886,476'Method and apparatus for producing electrical discharges'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999Patents assigned to GEN MOTORS CORP (1)· patent assignee history
1999–2010Based in Middletown, IN, US· patent location history
2001–2010Patents assigned to DELPHI TECH INC (4)· patent assignee history
2016–2021Patents assigned to CUMMINS INC (3)· patent assignee history
2016–2021Based in Columbus, IN, US· patent location history
2021Patents assigned to BORGWARNER LUDWIGSBURG GMBH (1)· patent assignee history
2021Patents assigned to KIENZLE DEJAN (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DELPHI TECH INC | 4 | 2001–2010 |
| CUMMINS INC | 3 | 2016–2021 |
| BORGWARNER LUDWIGSBURG GMBH | 1 | 2021 |
| GEN MOTORS CORP | 1 | 1999 |
| KIENZLE DEJAN | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Middletown, IN, US | 5 | 1999–2010 |
| Columbus, IN, US | 3 | 2016–2021 |