Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
CT

Changan Tian

NCNcstar: 32 patents #4 of 6Top 70%
Poway, CA: #52 of 1,186 inventorsTop 5%
California: #15,733 of 386,348 inventorsTop 5%
Overall (All Time): #112,249 of 4,157,543Top 3%
32 Patents All Time

Issued Patents All Time

Showing 1–25 of 32 patents

Patent #TitleCo-InventorsDate
D989905 Tool for a firearm Carson Cheng, Richard Thomas 2023-06-20
D904547 Vertical grip Carson Cheng, Richard Thomas 2020-12-08
D904546 Handstop Carson Cheng, Michael Cheng 2020-12-08
D900273 Reflex sight Carson Cheng, Michael Cheng 2020-10-27
D897483 Reflex sight Carson Cheng, Michael Cheng 2020-09-29
D891896 Tool for a firearm Carson Cheng, Richard Thomas 2020-08-04
D880268 Front and rear sight adjustment tool Carson Cheng, Richard Thomas 2020-04-07
10451370 Magazine opener Carson Cheng, Richard Thomas 2019-10-22
10393465 3-in-1 mount adapter Carson Cheng, Richard Thomas 2019-08-27
D856458 Reflex sight Carson Cheng, Richard Thomas 2019-08-13
D846689 Reflex sight Carson Cheng, Richard Thomas 2019-04-23
D846690 Reflex sight Carson Cheng, Richard Thomas 2019-04-23
D846691 Reflex sight Carson Cheng, Michael Cheng 2019-04-23
D844734 Light apparatus for firearm Carson Cheng, Richard Thomas 2019-04-02
D839377 Magazine opener Carson Cheng, Richard Thomas 2019-01-29
D829294 Sight adjustment tool Carson Cheng, Richard Thomas 2018-09-25
D826361 Vertical grip Carson Cheng, Richard Thomas 2018-08-21
D821529 Pistol grip Carson Cheng, Jason Michael Cheng 2018-06-26
9976834 Flip-up gun sight Carson Cheng, Richard Thomas 2018-05-22
9869526 Flip-up aiming sight Carson Cheng, Jason Michael Cheng 2018-01-16
D804696 Tactical flashlight Carson Cheng 2017-12-05
D803347 Scope Carson Cheng, Jason Michael Cheng 2017-11-21
9784535 Sight adjustment tool Carson Cheng, Richard Thomas 2017-10-10
D779013 Handguard Carson Cheng, Jason Michael Cheng 2017-02-14
D779014 Handguard Carson Cheng 2017-02-14