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

Changlin Ma — 7 Patents

Apple: 6 patents #4,834 of 18,612Top 30%
STSirf Technology: 1 patents #92 of 140Top 70%
San Jose, CA: #8,545 of 32,062 inventorsTop 30%
California: #83,669 of 386,348 inventorsTop 25%
Overall (All Time): #680,018 of 4,157,543Top 20%
7 Patents All Time
Changlin Ma has been granted 7 US patents while listed as an inventor at Apple. The first was granted in 2011 and the most recent in September 2022. Changlin Ma ranks #680,018 of 4,157,543 US inventors in our database (top 16.4%). Patent records list Changlin Ma in San Jose, CA, US.

Patents per Year

Patents granted per year, 2011 to 2022Bar chart with a peak of 2 patents in 2019.peak 22011: 1 patents20112019: 2 patents20192020: 1 patents20202021: 2 patents20212022: 1 patents2022

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
11441906 Iterative estimation of non-holonomic constraints in an inertial navigation system Isaac T. Miller 2022-09-13 $228,578,000
11109192 User-specific motion model for location estimation Isaac T. Miller, Benjamin A. Werner, Christina Selle, Saurabh Godha, Mark G. Petovello 2021-08-31 $281,034,000
10921462 Inertial navigation stabilization via barometer Isaac T. Miller 2021-02-16 $232,802,000
10739140 Iterative estimation of non-holonomic constraints in an inertial navigation system Isaac T. Miller 2020-08-11 $147,060,000
10309775 Altitude estimation using crowd-sourced pressure sensor data Glenn Donald MacGougan, Robert Mayor 2019-06-04 $74,703,000
10171946 Assisted GNSS velocity estimation Glenn Donald MacGougan, Kumar Gaurav Chhokra, Robert Mayor 2019-01-01
8086405 Compensation for mounting misalignment of a navigation device Shaowei Han, Xiaoji Niu 2011-12-27