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

Darrell Long — 12 Patents

IBM: 10 patents #10,925 of 70,183Top 20%
HGHyster-Yale Group: 1 patents #48 of 103Top 50%
University of California: 1 patents #8,022 of 18,278Top 45%
Soquel, CA: #38 of 187 inventorsTop 25%
California: #51,404 of 386,348 inventorsTop 15%
Overall (All Time): #396,045 of 4,157,543Top 10%
12 Patents All Time
Darrell Long has been granted 12 US patents while listed as an inventor at IBM. The first was granted in 1999 and the most recent in January 2023. Darrell Long ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Darrell Long in Soquel, CA, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11565924 Lift truck pallet sensor 2023-01-31
7139781 Managing filesystem versions Jason C. Young, Rajagopal Ananthanarayanan, Randal Chilton Burns, Robert M. Rees, Ralph A. Becker-Szendy +2 more 2006-11-21 $6,127,000
7085909 Method, system and computer program product for implementing copy-on-write of a file Rajagopal Ananthanarayanan, Ralph A. Becker-Szendy, Robert M. Rees, Randal Chilton Burns, Jujjuri Venkateswararao +2 more 2006-08-01 $2,070,000
6938056 System and method for restoring a file system from backups in the presence of deletions Randal Chilton Burns, Robert M. Rees 2005-08-30 $6,623,000
6792424 System and method for managing authentication and coherency in a storage area network Randal Chilton Burns 2004-09-14 $5,712,000
6775703 Lease based safety protocol for distributed system with multiple networks Randal Chilton Burns, Atul Goel, Robert M. Rees 2004-08-10 $6,982,000
6651147 Data placement and allocation using virtual contiguity Randal Chilton Burns, Robert M. Rees 2003-11-18 $6,722,000
6405315 Decentralized remotely encrypted file system Randal Chilton Burns, Edward G. Chron, Benjamin C. Reed 2002-06-11 $11,523,000
6018747 Method for generating and reconstructing in-place delta files Randal Chilton Burns 2000-01-25 $72,182,000
5931947 Secure array of remotely encrypted storage devices Randal Chilton Burns, Edward G. Chron, Benjamin C. Reed 1999-08-03 $33,855,000
5917998 Method and apparatus for establishing and maintaining the status of membership sets used in mirrored read and write input/output without logging Luis Felipe Cabrera 1999-06-29 $36,828,000
5889993 Predictive event tracking method Thomas M. Kroeger 1999-03-30