Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Henri Leonard — 28 Patents

MSMicro Mega, S.A.: 25 patents #1 of 19Top 6%
MIMicro-Mega: 3 patents #1 of 7Top 15%
Besançon, FR: #3 of 316 inventorsTop 1%
Overall (All Time): #134,628 of 4,157,543Top 4%
28 Patents All Time
Henri Leonard has been granted 28 US patents while listed as an inventor at Micro Mega, S.A.. The first was granted in 1980 and the most recent in June 1989. Henri Leonard ranks #134,628 of 4,157,543 US inventors in our database (top 3.2%). Patent records list Henri Leonard in Besançon, FR.

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
4840566 Device for maintaining a boring tool in a vibratory dental instrument 1989-06-20
4824370 Dental drill Jean M. Laurichesse 1989-04-25
4736843 Packing case for dental canal instruments 1988-04-12
4720266 Dental treatment device Bernard Lacour, Jean-Claude Boinot, Jean-Paul Jacoulet 1988-01-19
D288846 Container for root canal instruments 1987-03-17
4634378 Dental drill 1987-01-06
D287627 Dental air scaler 1987-01-06
4580979 Drilling systems by vibrations 1986-04-08
4581022 Dental syringe Michel Seigneurin 1986-04-08
D276374 Dental root-canal broach handle 1984-11-13
4478578 Handle for dental canal rotary instrument and method of manufacturing same 1984-10-23
D275034 Dental root-canal broach handle 1984-08-07
D271617 Dental root-canal broach handle 1983-11-29
D269371 Dental root-canal broach handle 1983-06-14
4344746 Distributor for the progressive and reversible supply of an air motor, in particular for hand-held dental instruments 1982-08-17
4333567 Plate for packaging dental root-canal instruments 1982-06-08
4306865 Dental handpiece reduction gear 1981-12-22
4286951 Dental handpiece 1981-09-01
4264306 Dental hand piece 1981-04-28
D258988 Dental root-canal broach handle 1981-04-21
4255144 Device for fixing a dental instrument in a handpiece 1981-03-10
4240473 Insert for injecting a liquid product into a bore 1980-12-23
4234308 Device for locking a tool in a dental handpiece 1980-11-18
4226591 Contra-angle head for driving two dental tools 1980-10-07
D257284 Dental handpiece 1980-10-07