DF

David E. Fletcher

DH Dayco Ip Holdings: 69 patents #2 of 65Top 4%
DP Dayco Products: 3 patents #62 of 203Top 35%
📍 Flint, MI: #1 of 357 inventorsTop 1%
🗺 Michigan: #453 of 86,293 inventorsTop 1%
Overall (All Time): #27,853 of 4,157,543Top 1%
72
Patents All Time

Issued Patents All Time

Showing 26–50 of 72 patents

Patent #TitleCo-InventorsDate
D840922 Venturi device Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2019-02-19
D840920 Venturi device Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2019-02-19
D840921 Venturi device Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2019-02-19
10190549 Check valves and venturi devices having the same Brian M. Graichen, Matthew C. Gilmer, Andrew Niedert, James H. Miller, Keith Hampton 2019-01-29
10190455 Venturi devices resistant to ice formation for producing vacuum from crankcase gases Keith Hampton, Brian M. Graichen, James H. Miller, Andrew Niedert 2019-01-29
10167971 Aspirated relief valve for a turbocharging system Brian M. Graichen, James H. Miller, Keith Hampton, Matthew C. Gilmer 2019-01-01
10132424 Variable flow valve having metered flow orifice Brian M. Graichen, James H. Miller, Keith Hampton 2018-11-20
10107240 Check valves and Venturi devices having the same Brian M. Graichen, Matthew C. Gilmer, Andrew Niedert, James H. Miller, Keith Hampton 2018-10-23
10100720 Crankcase ventilating evacuator Brian M. Graichen, James H. Miller, Keith Hampton 2018-10-16
10077746 Noise attenuation unit for engine systems Keith Hampton, Brian M. Graichen, Rex Bravo 2018-09-18
10024339 Vacuum creation system having an ejector, pneumatic control valve and optionally an aspirator Brian M. Graichen, James H. Miller, Rex Bravo, Matthew C. Gilmer, Keith Hampton +1 more 2018-07-17
D821302 Venturi device Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2018-06-26
D821546 Actuated valve Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2018-06-26
9919689 Bypass valve in an apparatus for producing vacuum Brian M. Graichen, Keith Hampton 2018-03-20
9915370 Magnetically actuated shut-off valve Brian M. Graichen, James H. Miller, Keith Hampton 2018-03-13
9915362 Fluidic diode check valve Keith Hampton, Brian M. Graichen, James H. Miller, Matthew C. Gilmer, Andrew Niedert 2018-03-13
9879699 Venturi devices with dual Venturi flow paths Brian M. Graichen, James H. Miller, Keith Hampton 2018-01-30
9863537 Check valve with improved sealing member Brian M. Graichen, Keith Hampton, Matthew C. Gilmer, Andrew Niedert 2018-01-09
9845773 Aspirator and ejector system Brian M. Graichen, Matt Gilmer, Andrew Niedert, Steve Long 2017-12-19
9845899 Sprung gate valves movable by an actuator Brian M. Graichen, Matt Gilmer 2017-12-19
9841110 Sprung gate valves movable by a solenoid actuator Brian M. Graichen, Matt Gilmer, James H. Miller 2017-12-12
9828953 Evacuator system having multi-port evacuator James H. Miller, Keith Hampton, Brian M. Graichen 2017-11-28
9822785 Turbocharger compressor recirculation system Brian M. Graichen, James H. Miller, Keith Hampton, Matt Gilmer, Rex Bravo +1 more 2017-11-21
D802095 Actuated valve Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2017-11-07
D796634 Actuated valve Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2017-09-05