Inventor
Ronald J. Herrin
Inventor
Troy, MI, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F01Lprimary
F01LCyclically operating valves for machines or engines22%
F02DControlling combustion engines22%
Y02TClimate change mitigation technologies related to transportation22%
H02KDynamo-electric machines9%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles4%
F02BInternal-combustion piston engines4%
F02PIgnition, other than compression ignition, for internal-combustion engines4%
F16HGearing4%
G01MTesting static or dynamic balance of machines or structures4%
H02NElectric machines not otherwise provided for4%
PatentTitleYear
11,111,991Magnetic drive motor assembly and associated method of use202111,018,569Torque augmentation device20219,759,140'Fifty percent burn crankshaft angle estimation systems and methods'20179,759,177'System and method for controlling spark timing based on a duration of a fuel burn within a cylinder in an engine'20178,532,908'System and method for estimating indicated mean effective pressure of cylinders in an engine'20137,530,337'High overlap camshaft for improved engine efficiency'20096,843,214'Method for balancing engine cylinder bank output using crankshaft sensing and intake cam phasing'20056,837,231'Cylinder bank work output balancing based on exhaust gas A/F ratio'20054,223,648'Hydraulic valve lifter'19804,054,109'Engine with variable valve overlap'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–2005Patents assigned to GEN MOTORS CORP (4)· patent assignee history
1977–1980Based in Clawson, MI, US· patent location history
2005–2017Based in Troy, MI, US· patent location history
2009–2013Patents assigned to GM GLOBAL TECH OPERATIONS INC (2)· patent assignee history
2013Patents assigned to BOWMAN JOHN V (1)· patent assignee history
2017Patents assigned to GM GLOBAL TECH OPERATIONS LLC (2)· patent assignee history
2021Patents assigned to HERRIN ROBERT (1)· patent assignee history
2021Based in Orlando, FL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GEN MOTORS CORP | 4 | 1977–2005 |
| GM GLOBAL TECH OPERATIONS INC | 2 | 2009–2013 |
| GM GLOBAL TECH OPERATIONS LLC | 2 | 2017 |
| BOWMAN JOHN V | 1 | 2013 |
| HERRIN ROBERTself | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Troy, MI, US | 6 | 2005–2017 |
| Orlando, Florida, US | 2 | 2021 |
| Clawson, MI, US | 2 | 1977–1980 |