Kolbenschmidt Aktiengesellschaft
57Patents
0Active
57Granted
37Portfolio score
Filing activity: Jan 29, 1985 → Aug 6, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4847135A | Composite material for sliding surface bearings | Emerging Cross-Sectional Technologies | 56 | Expired |
| US4666787A | Material for sliding surface bearings | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5163893A | Airbag folding apparatus | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5778846A | Forged or cast piston head of an oscillating shaft piston | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4587932A | Liquid-cooled composite piston for internal combustion engines | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US5013065A | Gas bag apparatus for protection against an impact | Performing Operations; Transporting | 27 | Expired |
| US5040646A | Component for absorbing energy | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4711208A | Piston for internal combustion engines | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5498911A | Apparatus for transmitting electric power and data in motor vehicles | Electricity | 24 | Expired |
| US4679681A | Synchronizing ring and process of manufacturing the same | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4836576A | Safety steering wheel | Performing Operations; Transporting | 23 | Expired |
| US5178408A | Gas bag for airbag systems | Textiles; Paper | 22 | Expired |
| US5063894A | Pressure-diecast light-alloy piston for internal combustion engines | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4836695A | Composite sliding surface bearing | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5146883A | Piston and connecting rod assembly | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4739738A | Cast components for internal combustion engines with embedded reinforcing layers | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4812367A | Material for low-maintenance sliding surface bearings | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5131356A | Single cylinder or multicylinder block | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4648309A | Light alloy piston | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4809652A | Light alloy piston | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5836699A | Roll-formed bushing for sliding surface bearings | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5024881A | Material for use in composite sliding surface bearings and process of manufacturing the material | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4624887A | Material for sliding surface bearings | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4687043A | Composite casting process | Performing Operations; Transporting | 14 | Expired |
| US5024882A | Material for use in composite sliding surface bearings and process of manufacturing the material | Emerging Cross-Sectional Technologies | 14 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.