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USPTO Patent Rankings Data through Dec 31, 2025
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Charles H. Bennett — 13 Patents

IBM: 8 patents #13,181 of 70,183Top 20%
HPHpm: 1 patents #16 of 22Top 75%
Utica, MI: #15 of 298 inventorsTop 6%
Michigan: #7,031 of 86,293 inventorsTop 9%
Overall (All Time): #362,438 of 4,157,543Top 9%
13 Patents All Time
Charles H. Bennett has been granted 13 US patents while listed as an inventor at IBM. The first was granted in 1980 and the most recent in July 2014. Charles H. Bennett ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Charles H. Bennett in Utica, MI, US.

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8771591 Silver alloy with high tarnish resistance 2014-07-08
8479009 Wearable time-bracketed video authentication Mavis Donkor 2013-07-02 $6,261,000
8136370 Silver-palladium alloy 2012-03-20
7792296 Access-controlled encrypted recording method for site, interaction and process monitoring 2010-09-07 $2,081,000
7477740 Access-controlled encrypted recording system for site, interaction and process monitoring 2009-01-13 $4,505,000
5764769 Digital recording system with time-bracketed authentication by on-line challenges and method of authenticating recordings David P. DiVincenzo, Ralph Linsker 1998-06-09 $6,285,000
5680455 Digital signature generator /verifier/ recorder (DS-GVR) for analog transmissions Ralph Linsker 1997-10-21 $16,513,000
5598473 Digital signature generator/verifier/recorder (DS-GVR) for analog transmissions Ralph Linsker 1997-01-28 $23,855,000
5515438 Quantum key distribution using non-orthogonal macroscopic signals Stephen J. Wiesner 1996-05-07 $18,293,000
5307410 Interferometric quantum cryptographic key distribution system 1994-04-26 $7,965,000
4886106 Die cast machine with a turret 1989-12-12
4382440 Smoke and pollutant filtering device Nancy J. Kapp 1983-05-10
4228587 Combined razor holder and shaving fluid dispenser 1980-10-21