DH

Douglas R. Hamburg

Ford: 60 patents #212 of 17,473Top 2%
📍 Birmingham, MI: #9 of 851 inventorsTop 2%
🗺 Michigan: #610 of 86,293 inventorsTop 1%
Overall (All Time): #38,298 of 4,157,543Top 1%
61
Patents All Time

Issued Patents All Time

Showing 51–61 of 61 patents

Patent #TitleCo-InventorsDate
5054454 Fuel vapor recovery control system 1991-10-08
5048493 System for internal combustion engine Daniel V. Orzel, Martin F. Davenport 1991-09-17
5048492 Air/fuel ratio control system and method for fuel vapor purging Martin F. Davenport, Daniel V. Orzel 1991-09-17
4789939 Adaptive air fuel control using hydrocarbon variability feedback 1988-12-06
4748959 Regulation of engine parameters in response to vapor recovery purge systems Jeffrey A. Cook 1988-06-07
4736724 Adaptive lean limit air fuel control using combustion pressure sensor feedback Gottfried Hogh, Gerald P. Lawson 1988-04-12
4715340 Reduction of HC emissions for vapor recovery purge systems Jeffrey A. Cook 1987-12-29
4677956 Solenoid duty cycle modulation for dynamic control of refueling vapor purge transient flow 1987-07-07
4664087 Variable rate purge control for refueling vapor recovery system 1987-05-12
4641623 Adaptive feedforward air/fuel ratio control for vapor recovery purge system 1987-02-10
4377143 Lean air-fuel control using stoichiometric air-fuel sensors 1983-03-22