Clifford L. Hansen — 4 Patents at IBM

Clifford L. Hansen has been granted 4 US patents while listed as an inventor at IBM. The first was granted in 2014 and the most recent in September 2024. Clifford L. Hansen ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list Clifford L. Hansen in Rochester, MN, US.

Patents per Year

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12095917	Securely transporting a root key using a privately/public key pair for user-controlled authentication of nodes in a hardware security module cluster	David N. Nguyen, Marco Pavone, Garry J. Sullivan, Ross Martin Heninger	2024-09-17	$9,971,000
11764972	Generating a hybrid security certificate using multiple cryptosystems	Jonathan William Edwards, David Wayne Glass, David Howard Evans, James R. Coon, Richard V. Kisley	2023-09-19	$7,535,000
9235702	Personal identification number security enhancement	Todd W. Arnold, Elizabeth A. Dames, Carsten D. Frehr, Shelia M. Sittinger	2016-01-12	$5,327,000
8639938	Personal identification number security enhancement	Todd W. Arnold, Elizabeth A. Dames, Carsten D. Frehr, Shelia M. Sittinger	2014-01-28	$3,630,000