Karl Schmidt GmbH
26Patents
0Active
26Granted
33Portfolio score
Filing activity: Jan 15, 1975 → Dec 22, 1983
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4581983A | Piston for internal combustion engines | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4495684A | Process of joining a ceramic insert which is adapted to be embedded in a light metal casting for use in internal combustion engines | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4394275A | Composite material for sliding surface bearings | Performing Operations; Transporting | 23 | Expired |
| US4175502A | Liquid-cooled, assembled piston for internal combustion engines | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4375782A | Composite piston for internal combustion engines | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4532868A | Rotating band for projectiles | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4356800A | Liquid-cooled, composite piston for internal-combustion engines | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4274372A | Lightweight piston for internal combustion engines | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US4368697A | Liquid-cooled piston for internal combustion engines | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4075934A | Piston for internal combustion engines | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US4063789A | Signalling arrangement for automotive vehicle steering wheels | Performing Operations; Transporting | 14 | Expired |
| US4448091A | Single-spoke steering wheel | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4135479A | Piston and cylinder for two-cycle engines | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US4138984A | Light alloy piston for diesel engines | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4562327A | Piston and process of providing wear-resisting surfaces in the ring grooves of an aluminum alloy combustion engine piston | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4200309A | Safety steering wheel for motor vehicles | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4353266A | Motor vehicle steering wheel comprising a deformable member | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4354426A | Expansion-controlled light alloy piston | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US3991811A | Process for manufacturing a light alloy piston having an annular cooling passage in its head portion | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4221403A | Three-point safety belt | Performing Operations; Transporting | 6 | Expired |
| US4061182A | Low-pressure casting apparatus | Performing Operations; Transporting | 3 | Expired |
| US4345138A | Process of shaping the rim of a combustion chamber recess of a light-alloy piston | Emerging Cross-Sectional Technologies | 3 | Expired |
| US3995680A | Method of cooling piston blank molds | Performing Operations; Transporting | 1 | Expired |
| US4047471A | Locking means for piston pin | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4262551A | Safety steering wheel for motor vehicles | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.