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USPTO Patent Rankings Data through Sept 30, 2025
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Robert Tso — 4 Patents in 2021

Amazon: 4 patents #208 of 4,535Top 5%
Hawthorne, CA: #3 of 24 inventorsTop 15%
California: #5,616 of 66,859 inventorsTop 9%
Overall (2021): #41,333 of 548,734Top 8%
4 Patents 2021

Issued Patents 2021

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
11102457 Audio/video recording and communication doorbell devices James Steven Skeoch, Chih-Jung Lin 2021-08-24
11082591 Solar-charging mounting bracket for audio/video recording and communication devices James Siminoff, Spiro Sacre, Christopher Loew, Mark Siminoff, Matthew J. England 2021-08-03
10999505 Low-power-consumption audio/video recording and communication doorbell James Siminoff, Changsoo Jeong, John Modestine, Trevor Phillips, Mark Siminoff +1 more 2021-05-04
10939040 Low-power-consumption audio/video recording and communication doorbell James Siminoff, Changsoo Jeong, John Modestine, Trevor Phillips, Mark Siminoff +1 more 2021-03-02