Bertin & Cie
107Patents
0Active
107Granted
42Portfolio score
Filing activity: Nov 29, 1973 → Dec 14, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4836674A | Method and apparatus for determining color, in particular of a dental prosthesis | Physics | 134 | Expired |
| US4778449A | Monitoring system for the remote supervision of a plurality of gravity perfusion sets | Emerging Cross-Sectional Technologies | 131 | Expired |
| US5383020A | Method and apparatus for determining the color of a translucent object such as a tooth | Physics | 113 | Expired |
| US5428450A | Method and apparatus for determining the color of an object that is transparent, diffusing, and absorbent, such as a tooth, in particular | Physics | 105 | Expired |
| US5107845A | Method and device for monitoring human respiration | Human Necessities | 100 | Expired |
| US4207441A | Auditory prosthesis equipment | Human Necessities | 88 | Expired |
| US4149523A | Solar energy collector system with cylindro-parabolic mirror | Emerging Cross-Sectional Technologies | 87 | Expired |
| US4511805A | Convertor for thermal energy into electrical energy using Stirling motor and integral electrical generator | Mechanical Engineering; Lighting; Heating | 73 | Expired |
| US5062965A | Filtration apparatus comprising an ultrasonic cleaning device and corresponding cleaning process | Performing Operations; Transporting | 66 | Expired |
| US5306913A | Method and apparatus for remote optical detection of a gas present in an observed volume | Physics | 51 | Expired |
| US4557500A | Suspension for a motor vehicle by means of an elastic blade | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US4977605A | Binary quantification of an image having multiple levels of greys | Electricity | 43 | Expired |
| US4131320A | Conveyor device for letters, cards or other thin article | Physics | 41 | Expired |
| US4643021A | Method and apparatus for measuring the rheological characteristics of a fluid, in particular of a biological fluid such as blood | Physics | 40 | Expired |
| US5784282A | Method and apparatus for identifying the position in three dimensions of a movable object such as a sensor or a tool carried by a robot | Physics | 40 | Expired |
| US5800475A | Hearing aid including a cochlear implant | Electricity | 39 | Expired |
| US5173159A | Multiple electrophoresis method for the controlled migration of macromolecules through rectangular gel plates | Physics | 38 | Expired |
| US5155344A | Method and device for reading a bar code of variable orientation on a substantially motionless medium | Physics | 36 | Expired |
| US5334004A | Compressor or turbine type rotary machine for compressing or expanding a dangerous gas | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US5260701A | Bidirectional inductive transmission of data with slave station supplied by the master | Electricity | 29 | Expired |
| US4857704A | Apparatus for thermal treatments of thin parts such as silicon wafers | Electricity | 29 | Expired |
| US5166479A | Silencer for a gas flow | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4758085A | Optical fiber spectrometer/colorimeter apparatus | Physics | 23 | Expired |
| US4867565A | Opto-electronic detection device for remotely detecting a physical magnitude | Physics | 22 | Expired |
| US5027810A | Self-contained emergency breathing apparatus | Human Necessities | 21 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.