Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
RH

Robert Hehlen — 6 Patents

THThomson-Csf: 5 patents #171 of 2,054Top 9%
TPThomson Grand Public: 1 patents #1 of 13Top 8%
Paris, FR: #1,568 of 13,709 inventorsTop 15%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Robert Hehlen has been granted 6 US patents while listed as an inventor at Thomson-Csf. The first was granted in 1984 and the most recent in October 1991. Robert Hehlen ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Robert Hehlen in Paris, FR.

Patents per Year

Patents granted per year, 1984 to 1991Bar chart with a peak of 2 patents in 1984.peak 21984: 2 patents19841985: 1 patents19851986: 1 patents19861987: 1 patents19871991: 1 patents1991

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
5055833 Method for the control of an electro-optical matrix screen and control circuit by Philippe Hehlen, legal representative, by Bernard Hehlen, legal representative, Maurice Le Galguen, Bruno Mourey 1991-10-08
4673256 Process for controlling a matrix access display device Michel Hareng, Serge Le Berre, Bruno Mourey 1987-06-16 $14,000
4621261 System for making a thermo-active device temperature dependent Philippe Marcenac 1986-11-04 $15,000
4525708 Thermoelectric effect display device Michel Hareng, Philippe Marcenac, Serge Le Berre, Pierre Leclerc, Jean-Noel Perbet 1985-06-25
4481510 Electrooptical switching device Michel Hareng, Serge LeBerre, Pierre Leclerc 1984-11-06
4427997 Control device for a display screen and display screen controlled by this device Michel Hareng, Serge Le Berre, Pierre Leclerc, Philippe Marcenac, Jean-Noel Perbet 1984-01-24