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

Roger March — 19 Patents

MSMatrix Semiconductor: 13 patents #10 of 55Top 20%
DGData General: 2 patents #96 of 327Top 30%
Santa Clara, CA: #852 of 9,301 inventorsTop 10%
California: #31,067 of 386,348 inventorsTop 9%
Overall (All Time): #229,345 of 4,157,543Top 6%
19 Patents All Time
Roger March has been granted 19 US patents while listed as an inventor at Matrix Semiconductor. The first was granted in 1984 and the most recent in December 2024. Roger March ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Roger March in Santa Clara, CA, US.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12182429 Hierarchical file block variant tracking for performance in parallelism at multi-disk arrays 2024-12-31
9740717 Method of operation for a hierarchical file block variant tracker apparatus 2017-08-22
9594782 Hierarchical file block variant store apparatus and method of operation 2017-03-14
8874534 File state subset satellites to provide block-based version control Shivinder Singh Sikand 2014-10-28
7062602 Method for reading data in a write-once memory device using a write-many file system Christopher S. Moore, J. James Tringali, James Schneider, Derek Bosch, Daniel C. Steere 2006-06-13
7003619 Memory device and method for storing and reading a file system structure in a write-once memory array Christopher S. Moore, James Schneider, J. James Tringali 2006-02-21
6996660 Memory device and method for storing and reading data in a write-once memory array Christopher S. Moore, James Schneider, J. James Tringali 2006-02-07
6925545 Configuring file structures and file system structures in a memory device Christopher S. Moore, Daniel T. Brown 2005-08-02
6901549 Method for altering a word stored in a write-once memory device Christopher S. Moore, Mark G. Johnson 2005-05-31
6820185 Method for identifying memory cells storing replacement data on a memory device Christopher S. Moore, Daniel T. Brown 2004-11-16
6778974 Memory device and method for reading data stored in a portion of a memory device unreadable by a file system of a host device Christopher S. Moore, Daniel T. Brown 2004-08-17
6738883 Memory devices and methods for use therewith Christopher S. Moore, Daniel T. Brown 2004-05-18
6697928 System and method for storing first and second files in a memory device Daniel T. Brown, Christopher S. Moore 2004-02-24
6694415 Methods for permanently preventing modification of a partition or file Christopher S. Moore, Daniel T. Brown 2004-02-17
6651133 Method and data storage device for writing a minimum number of memory cells in a memory device Christopher S. Moore, Daniel T. Brown 2003-11-18
6647471 Methods for overwriting data in a memory device Christopher S. Moore, Daniel T. Brown 2003-11-11
6515904 Method and system for increasing programming bandwidth in a non-volatile memory device Christopher S. Moore, Bendik Kleveland, James M. Cleeves, Roy E. Scheuerlein 2003-02-04
4649470 Data processing system David H. Bernstein, Edward M. Buckley, Ronald I. Gusowski 1987-03-10 $7,791,000
4464772 Frequency synthesizer for providing a pseudo-constant frequency signal Edward M. Buckley, Michael B. Druke 1984-08-07 $5,352,000