Inventor
III, Chester E. Duffield
Inventor
US
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
F02Mprimary
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof28%
F16KValves22%
F02BInternal-combustion piston engines11%
F02DControlling combustion engines11%
B01DSeparation6%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles6%
F01MLubricating of machines or engines in general6%
F04FPumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped6%
Y02TClimate change mitigation technologies related to transportation6%
PatentTitleYear
11,492,936Crankcase ventilation system with constant restriction in the flow direction and free flow in an opposite direction202211,486,504Check valve insert defining an open position and check valves having same202211,415,086Three port, five-way magnetically latching valve for fuel vapor management systems and systems incorporating same202211,408,361Charge air cooler drain system202211,300,080Fuel tank protector valve and engine systems having same2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022Patents assigned to DAYCO IP HOLDINGS LLC (5)· patent assignee history
2022Based in US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DAYCO IP HOLDINGS LLC | 5 | 2022 |
Locations
| Location | Patents | Span |
|---|---|---|
| US | 5 | 2022 |