Automobile Citroën
240Patents
0Active
240Granted
42Portfolio score
Filing activity: Sep 13, 1973 → Jun 3, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5296924A | Process for detection of obstacles present, in particular, in front of an automotive vehicle | Physics | 200 | Expired |
| US6330938A | Method and device for controlling an electric actuator activating a functional system | Performing Operations; Transporting | 94 | Expired |
| US5633944A | Method and apparatus for automatic optical recognition of road signs | Physics | 75 | Expired |
| US4810452A | Method of making a facing panel | Performing Operations; Transporting | 52 | Expired |
| US5745027A | Data communication system employing carrier currents, in particular for a motor vehicle | Emerging Cross-Sectional Technologies | 52 | Expired |
| US5919240A | Control device for a suspension such as hydropneumatic suspension for a motor vehicle | Performing Operations; Transporting | 50 | Expired |
| US5127634A | Hydropneumatic vehicle suspension strut | Performing Operations; Transporting | 50 | Expired |
| US4888575A | Device having a modifiable code for protecting against theft of automobile vehicles | Physics | 49 | Expired |
| US3980946A | Apparatus for measuring the electrical conductivity of a liquid | Physics | 48 | Expired |
| US3981747A | Process for producing electric current by the electrochemical oxidation of an active anodic metal, especially zinc | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4262886A | Elastically yieldable block structure, in particular for the suspension of an engine of a vehicle | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US4180713A | Switch control unit for automobile vehicle | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4768760A | Hydro-elastic articulation | Mechanical Engineering; Lighting; Heating | 40 | Expired |
| US4277097A | Vehicle having a rear deck for covering a luggage boot | Performing Operations; Transporting | 35 | Expired |
| US5040334A | Opening element of the body of an automotive vehicle | Performing Operations; Transporting | 34 | Expired |
| US5046041A | Device for transmitting information between a plurality of elements of an automobile vehicle, and a central information processing unit | Physics | 33 | Expired |
| US5971479A | Infant vehicle seat | Performing Operations; Transporting | 33 | Expired |
| US4227736A | Convertible seat for automobile vehicles | Performing Operations; Transporting | 32 | Expired |
| US3963087A | Protective screens for exhaust systems of motor vehicles | Performing Operations; Transporting | 30 | Expired |
| US4559025A | Universal joint with bellows seal and vent | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5036110A | Impervious resilient membrane and hydropneumatic accumulator fitted with that membrane | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4846135A | Device for recovering gasoline vapors | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4568069A | Elastically yieldable mount, in particular for the suspension of a vehicle engine | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US4213637A | Passive safety belt for an automobile vehicle | Performing Operations; Transporting | 25 | Expired |
| US5653105A | Device for the treatment of the exhaust gases of a spark-ignition engine comprising a catalyst body and a hydrocarbons adsorber placed in an exhaust manifold | Mechanical Engineering; Lighting; Heating | 25 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.