Changan Tian has been granted 32 US patents while listed as an inventor at Ncstar . The first was granted in 2015 and the most recent in June 2023. Changan Tian ranks #110,428 of 4,157,543 US inventors in our database (top 2.7%). Patent records list Changan Tian in Poway, CA, US.
Patents per Year Patents granted per year, 2015 to 2023 Bar chart with a peak of 8 patents in 2019. peak 8 2015: 2 patents 2015 2016: 3 patents 2016 2017: 7 patents 2017 2018: 5 patents 2018 2019: 8 patents 2019 2020: 6 patents 2020 2023: 1 patents 2023
Issued Patents All Time
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Showing 1–25 of 32 patents
Patent # Title Co-Inventors Date
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