DF

David E. Fletcher

DH Dayco Ip Holdings: 12 patents #3 of 13Top 25%
📍 Flint, MI: #1 of 13 inventorsTop 8%
🗺 Michigan: #109 of 9,817 inventorsTop 2%
Overall (2018): #4,716 of 503,207Top 1%
12
Patents 2018

Issued Patents 2018

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
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
D821546 Actuated valve Brian M. Graichen, James H. Miller, Rex Bravo, Keith Hampton, Matthew C. Gilmer +2 more 2018-06-26
D821302 Venturi device 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