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Stephen E. Hannah — 62 Patents

GSGatekeeper Systems: 59 patents #1 of 14Top 8%
GE: 2 patents #13,632 of 36,430Top 40%
Placentia, CA: #1 of 422 inventorsTop 1%
California: #5,560 of 386,348 inventorsTop 2%
Overall (All Time): #36,550 of 4,157,543Top 1%
62 Patents All Time
Stephen E. Hannah has been granted 62 US patents while listed as an inventor at Gatekeeper Systems. The first was granted in 2003 and the most recent in November 2025. Stephen E. Hannah ranks #36,550 of 4,157,543 US inventors in our database (top 0.88%). Patent records list Stephen E. Hannah in Placentia, CA, US.

Issued Patents All Time

Showing 1–25 of 62 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12482334 Shopping basket monitoring using computer vision Scott J. Carter, Narayanan Ramanathan, Jesse M. James 2025-11-25
12131647 Estimating motion of wheeled carts Scott J. Carter, Jesse M. James, Narayanan Ramanathan 2024-10-29
12106644 Shopping basket monitoring using computer vision and machine learning Narayanan Ramanathan, Scott J. Carter, Jesse M. James, Jack L. Johnson, Robert M. Harling 2024-10-01
12033481 Shopping basket monitoring using computer vision and machine learning Narayanan Ramanathan, Scott J. Carter, Jesse M. James, Jack L. Johnson, Robert M. Harling 2024-07-09
11990009 Shopping basket monitoring using computer vision Scott J. Carter, Narayanan Ramanathan, Jesse M. James 2024-05-21
11981365 System for monitoring and controlling shopping cart usage Scott J. Carter, Jesse M. James 2024-05-14
11718336 Navigation systems and methods for wheeled objects Scott J. Carter, Jesse M. James 2023-08-08
11414117 Anti-theft system that uses shopping cart location and vibration data Scott J. Carter, Jesse M. James, Narayanan Ramanathan, Robert M. Harling, Jack L. Johnson 2022-08-16
11358621 System for monitoring and controlling shopping cart usage Scott J. Carter, Jesse M. James 2022-06-14
11299189 Motorized cart retriever for monitoring cart status Scott J. Carter, Jesse M. James 2022-04-12
11230313 System for monitoring and controlling shopping cart usage Scott J. Carter, Jesse M. James 2022-01-25
11208134 Monitoring system capable of classifying items added to a shopping cart Scott J. Carter, Narayanan Ramanathan, Jesse M. James 2021-12-28
11203370 Shopping cart monitoring using computer vision Scott J. Carter, Narayanan Ramanathan, Jesse M. James 2021-12-21
11183070 Estimating motion of wheeled carts Scott J. Carter, Jesse M. James, Narayanan Ramanathan 2021-11-23
10858024 Navigation systems for wheeled carts Scott J. Carter, Jesse M. James, Narayanan Ramanathan, Robert M. Harling, Jack L. Johnson 2020-12-08
10745040 Motorized cart retriever for monitoring cart status Scott J. Carter, Jesse M. James 2020-08-18
10730541 Navigation systems and methods for wheeled objects Scott J. Carter, Jesse M. James 2020-08-04
10546502 Estimating motion of wheeled carts Scott J. Carter, Jesse M. James, Narayanan Ramanathan 2020-01-28
10232869 Navigation systems for wheeled carts Scott J. Carter, Jesse M. James, Narayanan Ramanathan, Robert M. Harling, Jack L. Johnson 2019-03-19
10227082 Power generation systems and methods for wheeled objects Scott J. Carter 2019-03-12
10219136 Systems with buried antennas for bi-directional communication with wheeled vehicles Jesse M. James 2019-02-26
10189494 Cart monitoring system with wheel assembly capable of visually signaling cart status Scott J. Carter, Jesse M. James 2019-01-29
10124821 Monitoring usage or status of cart retrievers Jesse M. James, Chandrashekhar Ekbote 2018-11-13
10023216 Cart monitoring system capable of authorizing cart exit events Scott J. Carter, Jesse M. James 2018-07-17
10001541 Magnetometer and accelerometer calibration for cart navigation system Scott J. Carter 2018-06-19

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