Inventor
Fred W. Hoffman
Inventor
Columbia Station, OH, US
Overview
Patents· 44 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B60Tprimary
B60TVehicle brake control systems or parts thereof30%
B01DSeparation23%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
Y10TTechnical subjects covered by former us classification10%
F15BSystems acting by means of fluids in general7%
LOC234%
F16DCouplings for transmitting rotation3%
H02KDynamo-electric machines3%
B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids1%
B60CVehicle tyres1%
PatentTitleYear
10,933,351Effluent processing apparatus for a vehicle air brake charging system202110,583,382Effluent processing apparatus for a vehicle air brake charging system202010,583,820Effluent processing apparatus and method for a vehicle air brake charging system202010,131,338Heat-exchange dryer apparatus, system and method201810,065,617Apparatus and method for isolating an intact portion of a service braking circuit from a failed service brake wheel end20189,457,785'Heat-exchange dryer apparatus, system and method'20169,381,899'Apparatus and method for isolating an intact portion of a service braking circuit from a failed service brake wheel end'20169,180,854'Dual purpose dryers for high flow'20159,156,458'Braking system with non-spring parking brake actuator'20159,101,856'Purge exhaust processor'20158,118,911'Air drying arrangement'20127,981,194'Air drying arrangement'20117,819,958'Purge valve'20107,789,950'Air dryer with oil removal filter'20107,789,925'Purge exhaust processor'20107,753,069'Drain valve'20107,717,680'Charging system'20107,708,793'Purge exhaust processor'20107,637,985'Dry compressed air supply module'20097,631,656'Pressure control valve'20097,520,922'Air dryer system'2009D0574940'Air dryer system'2008D0573240'Air dryer system'2008D0570979'Air dryer reservoir'20087,285,149'Oil separator for vehicle air system'2007D0546431'Air dryer reservoir'2007RE039467'Air dryer reservoir module components'20077,117,896'Air system module including reservoir and mounting structure'20067,100,305'Air dryer mounting assembly'20066,881,245'Membrane air dryer and method of mounting a membrane dryer to a vehicle'20056,878,194'Remote purge drying unit for compressed gas'20056,858,066'Air dryer module'20056,695,893'Continuous flow dryer reservoir module dryer system'20046,679,527'Push-to-connect fittings for air brake reservoirs'20046,585,806'Air dryer reservoir module components'20036,425,935'Trailer air dryer with purge during park feature'20026,358,291'Trailer air dryer with bypass valving and service indicator'20026,074,462'Air dryer reservoir module components'20005,917,139'Air dryer reservoir module'19995,051,632'Assembling electric motors with reduced end-play'19914,944,085'Means for assembling electric motors with reduced end-play'19904,878,289'Methods of assembling electric motors with reduced end-play'19894,646,889'Compressor drive with oil distribution sleeve'19874,421,211'Connection mechanism for automatic slack adjuster'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–1987Based in Brunswick, OH, US· patent location history
1989–1991Patents assigned to UPPCO INC (3)· patent assignee history
1989–1991Based in Chicago, IL, US· patent location history
1999–2000Patents assigned to ALLIEDSIGNAL TRUCK BRAKE SYST (2)· patent assignee history
1999–2011Based in Columbia Station, OH, US· patent location history
2002–2016Patents assigned to BENDIX COMMERCIAL VEHICLE SYS (28)· patent assignee history
2012–2015Patents assigned to HOFFMAN FRED W (3)· patent assignee history
2012–2021Based in Wakeman, OH, US· patent location history
2016–2021Patents assigned to BENDIX COMMERCIAL VEHICLE SYSTEMS LLC (6)· patent assignee history
2020Based in Wakerman, OH, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BENDIX COMMERCIAL VEHICLE SYS | 28 | 2002–2016 |
| BENDIX COMMERCIAL VEHICLE SYSTEMS LLC | 6 | 2016–2021 |
| HOFFMAN FRED Wself | 3 | 2012–2015 |
| UPPCO INC | 3 | 1989–1991 |
| ALLIEDSIGNAL TRUCK BRAKE SYST | 2 | 1999–2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Columbia Station, OH, US | 28 | 1999–2011 |
| Wakeman, OH, US | 10 | 2012–2021 |
| Chicago, Illinois, US | 3 | 1989–1991 |
| Brunswick, OH, US | 2 | 1983–1987 |
| Wakerman, OH, US | 1 | 2020 |