Max Ruf
25Patents
7h-index
9Co-inventors
58Inventor score
Filing activity: Aug 29, 1974 → Nov 13, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4114571A | Means for controlling the oil cooling of the piston of a piston engine | Mechanical Engineering; Lighting; Heating | 34 | Expired |
| US4716735A | Exhaust gas turbo-supercharger for a vehicle engine | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US3990817A | Rotary combustion engine having a modified trochoid | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US4643138A | Suction pipe system for multicylinder internal combustion engine | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4699092A | Fluid-cooled cylinder head | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4427150A | Motor vehicle with a combustion engine | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4392797A | Device for lubricating a rotary piston air pump | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US4870990A | Double-flow butterfly valve part | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4222715A | Device for delivery control in a rotary piston compressor | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4253805A | Rotary compressor | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4543925A | Light-alloy cylinder head for reciprocating piston internal combustion engines | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4009701A | Internal combustion engine having provisions for heating the fuel-air mixture by means of the exhaust | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5069176A | Internal combustion engine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4776307A | Multi-cylinder/combustion engine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4289159A | Outlet valve for a gas compressor | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4025366A | Method of making rotary piston engine cast iron interior seals by quench hardening | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4005953A | Piston of a rotary piston engine of trochoid type, having an internal seal | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4838217A | Cast iron camshaft for internal combustion engines | Emerging Cross-Sectional Technologies | 3 | Expired |
| US3939655A | Rotary piston four-stroke internal combustion engine | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4745892A | Internal combustion engine | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| USRE28714A | Internal seal for rotary piston combustion engine | General | 2 | Expired |
| US4090824A | Rotary piston engine piston having an internal seal | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4080116A | Seal grid for a rotary internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4090823A | Fluid-cooled rotary piston for Wankel-type mechanism | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US4037455A | Process for producing metal rings | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.