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

David Campbell — 33 Patents

IBM: 28 patents #3,689 of 70,183Top 6%
Rolls-Royce Plc: 3 patents #824 of 1,164Top 75%
BPBritish Petroleum: 1 patents #145 of 360Top 45%
Austin, TX: #894 of 18,064 inventorsTop 5%
Texas: #3,395 of 125,132 inventorsTop 3%
Overall (All Time): #105,480 of 4,157,543Top 3%
33 Patents All Time
David Campbell has been granted 33 US patents while listed as an inventor at IBM. The first was granted in 1981 and the most recent in September 2025. David Campbell ranks #105,480 of 4,157,543 US inventors in our database (top 2.5%). Patent records list David Campbell in Austin, TX, US.

Patents per Year

Patents granted per year, 1981 to 2025Bar chart with a peak of 9 patents in 2023.peak 91981: 1 patents19811982: 1 patents19821984: 1 patents19841992: 1 patents19922020: 3 patents20202021: 8 patents20212022: 8 patents20222023: 9 patents20232025: 1 patents2025

Issued Patents All Time

Showing 1–25 of 33 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12411688 Gather buffer management for unaligned and gather load operations Kimberly M. Fernsler, Bryan Lloyd, David A. Hrusecky 2025-09-09
11847064 Buffer and methods for address translations in a processor 2023-12-19 $9,403,000
11755324 Gather buffer management for unaligned and gather load operations Kimberly M. Fernsler, Bryan Lloyd, David A. Hrusecky 2023-09-12 $5,734,000
11734188 Unified translation miss queue for multiple address translation modes Charles D. Wait, Jake Truelove, Jody B. Joyner, Jon K. Kriegel, Glenn O. Kincaid 2023-08-22 $5,113,000
11650926 Virtual cache synonym detection using alias tags Bryan Lloyd 2023-05-16 $5,363,000
11645208 Translation bandwidth optimized prefetching strategy through multiple translation lookaside buffers Bryan Lloyd, George W. Rohrbaugh, III, Vivek Britto, Mohit Karve 2023-05-09 $3,203,000
11636043 Sleeping and waking-up address translation that conflicts with translation level of active page table walks Charles D. Wait, Jake Truelove, Jody B. Joyner, Jon K. Kriegel, Glenn O. Kincaid 2023-04-25 $8,760,000
11593109 Sharing instruction cache lines between multiple threads Sheldon B. Levenstein, Nicholas R. Orzol, Christian Zoellin 2023-02-28 $9,133,000
11593108 Sharing instruction cache footprint between multiple threads Sheldon B. Levenstein, Nicholas R. Orzol, Christian Zoellin 2023-02-28 $9,133,000
11556475 Power optimized prefetching in set-associative translation lookaside buffer structure George W. Rohrbaugh, III, Jake Truelove, Jon K. Kriegel, Charles D. Wait, Jody B. Joyner 2023-01-17 $4,393,000
11537519 Marking in-flight requests affected by translation entry invalidation in a data processing system Derek E. Williams, Guy L. Guthrie, Hugh Shen, Bryan Lloyd, Samuel David Kirchhoff +1 more 2022-12-27 $9,721,000
11500774 Virtual cache tag renaming for synonym handling Bryan Lloyd 2022-11-15 $5,426,000
11461474 Process-based virtualization system for executing a secure application process Jentje Leenstra, Paul Mackerras, Benjamin Herrenschmidt, Bradly G. Frey, John Martin Ludden +1 more 2022-10-04 $9,590,000
11422947 Determining page size via page table cache Jake Truelove, Charles D. Wait, Jon K. Kriegel 2022-08-23 $8,523,000
11409663 Methods and systems for optimized translation of a virtual address having multiple virtual address portions using multiple translation lookaside buffer (TLB) arrays for variable page sizes Dwain A. Hicks 2022-08-09 $6,406,000
11263151 Dynamic translation lookaside buffer (TLB) invalidation using virtually tagged cache for load/store operations Bryan Lloyd, David A. Hrusecky, Kimberly M. Fernsler, Jeffrey A. Stuecheli, Guy L. Guthrie +4 more 2022-03-01 $6,542,000
11243773 Area and power efficient mechanism to wakeup store-dependent loads according to store drain merges Bryan Lloyd, Brian Chen, Robert A. Cordes 2022-02-08 $4,353,000
11221963 Methods and systems for incorporating non-tree based address translation into a hierarchical translation lookaside buffer (TLB) Dwain A. Hicks 2022-01-11 $4,843,000
11210233 System and method for handling address translation invalidations using an address translation invalidation probe Jake Truelove 2021-12-28 $7,175,000
11129454 Electronic assembly for a cover supported by a pole Charles Campbell 2021-09-28
11119945 Context tracking for multiple virtualization layers in a virtually tagged cache Jake Truelove, Bryan Lloyd 2021-09-14 $2,674,000
11086787 Virtual cache synonym detection using alias tags Bryan Lloyd 2021-08-10 $4,960,000
11061810 Virtual cache mechanism for program break point register exception handling Dwain A. Hicks, David A. Hrusecky, Bryan Lloyd 2021-07-13 $4,436,000
10977175 Virtual cache tag renaming for synonym handling Bryan Lloyd 2021-04-13 $3,936,000
10936505 Methods and systems for verifying out-of-order page fault detection John Martin Ludden, Lance G. Hehenberger, Madhusudan Kadiyala, George W. Rohrbaugh, III 2021-03-02 $2,720,000