Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Daniel A. Steffen — 21 Patents

Apple: 21 patents #1,550 of 18,612Top 9%
San Francisco, CA: #1,796 of 26,999 inventorsTop 7%
California: #27,449 of 386,348 inventorsTop 8%
Overall (All Time): #201,324 of 4,157,543Top 5%
21 Patents All Time
Daniel A. Steffen has been granted 21 US patents while listed as an inventor at Apple. The first was granted in 2016 and the most recent in March 2024. Daniel A. Steffen ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Daniel A. Steffen in San Francisco, CA, US.

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11940931 Turnstile API for runtime priority boosting Jainam A. Shah, Jeremy C. Andrus, Daniel A. Chimene, Kushal Dalmia, Pierre Habouzit +2 more 2024-03-26 $155,925,000
11860796 Execution space agnostic device drivers Jeremy C. Andrus, Joseph R. Auricchio, Russell A. Blaine, Daniel A. Chimene, Simon Douglas +6 more 2024-01-02 $111,466,000
11748468 Dynamic switching between pointer authentication regimes Bernard J. Semeria, Devon S. Andrade, Jeremy C. Andrus, Ahmed Bougacha, Peter Cooper +5 more 2023-09-05 $187,157,000
11422857 Multi-level scheduling Kushal Dalmia, Jeremy C. Andrus, Daniel A. Chimene, Nigel R. Gamble, James M. Magee 2022-08-23 $220,432,000
11372672 Centralized task scheduling Kevin J. Van Vechten 2022-06-28 $172,717,000
11144631 Dynamic switching between pointer authentication regimes Bernard J. Semeria, Devon S. Andrade, Jeremy C. Andrus, Ahmed Bougacha, Peter Cooper +5 more 2021-10-12 $318,215,000
11093601 Dynamic switching between pointer authentication regimes Bernard J. Semeria, Devon S. Andrade, Jeremy C. Andrus, Ahmed Bougacha, Peter Cooper +5 more 2021-08-17 $294,809,000
11086800 Execution space agnostic device drivers Jeremy C. Andrus, Joseph R. Auricchio, Russell A. Blaine, Daniel A. Chimene, Simon Douglas +6 more 2021-08-10 $279,194,000
11048562 Multi-thread synchronization primitive Pierre Habouzit, Daniel A. Chimene, Jeremy C. Andrus, James M. Magee, Puja Gupta 2021-06-29 $366,278,000
10908954 Quality of service classes Matthew Wright, Russell A. Blaine, Daniel A. Chimene, Kevin J. Van Vechten, Thomas Brogan Duffy, Jr. 2021-02-02 $228,514,000
10901920 Turnstile API for runtime priority boosting Jainam A. Shah, Jeremy C. Andrus, Daniel A. Chimene, Kushal Dalmia, Pierre Habouzit +2 more 2021-01-26 $257,028,000
10891369 Dynamic switching between pointer authentication regimes Bernard J. Semeria, Devon S. Andrade, Jeremy C. Andrus, Ahmed Bougacha, Peter Cooper +5 more 2021-01-12 $398,981,000
10671430 Execution priority management for inter-process communication Jainam A. Shah, James M. Magee, Jeremy C. Andrus, Russell A. Blaine 2020-06-02 $124,146,000
10430577 Method and apparatus for inter process privilige transfer James M. Magee, Russell A. Blaine, Vishal Patel, Kevin J. Van Vechten, Jacques Anthony Vidrine +2 more 2019-10-01 $90,896,000
10310891 Hand-off scheduling Daniel A. Chimene, James M. Magee, Russell A. Blaine, Shantonu Sen 2019-06-04 $74,703,000
10162727 Activity tracing diagnostic systems and methods Eric Russell Clements, Jainam A. Shah, Vishal Patel, Damien P. Sorresso 2018-12-25
9619012 Power level control using power assertion requests James M. Magee, Ethan T. Bold, Goutham Mani, Abhinav Pathak 2017-04-11 $57,299,000
9582326 Quality of service classes Matthew Wright, Russell A. Blaine, Daniel A. Chimene, Kevin J. Van Vechten, Thomas Brogan Duffy, Jr. 2017-02-28 $61,357,000
9396089 Activity tracing diagnostic systems and methods Eric Russell Clements, Jainam A. Shah, Vishal Patel, Damien P. Sorresso 2016-07-19 $68,975,000
9378117 Queue debugging using stored backtrace information David V. Payne, Han Ming Ong, Jason Molenda, Kenneth S. Orr, Katherine Blake Stone 2016-06-28 $62,871,000
9348645 Method and apparatus for inter process priority donation James M. Magee, Russell A. Blaine, Daniel A. Chimene, James C. McIlree, Vishal Patel +1 more 2016-05-24 $65,115,000