Xiaoyuan Chang has been granted 10 US patents while listed as an inventor at Otis Elevator . The first was granted in 2005 and the most recent in August 2023. Xiaoyuan Chang ranks #481,000 of 4,157,543 US inventors in our database (top 11.6%). Patent records list Xiaoyuan Chang in Ellington, CT, US.
Patents per Year Patents granted per year, 2005 to 2023 Bar chart with a peak of 2 patents in 2022. peak 2 2005: 1 patents 2005 2008: 1 patents 2008 2012: 1 patents 2012 2017: 1 patents 2017 2018: 1 patents 2018 2020: 1 patents 2020 2021: 1 patents 2021 2022: 2 patents 2022 2023: 1 patents 2023
Issued Patents All Time
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Showing 1–10 of 10 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11713211 Elevator belt surface protection for installation Hong Yang 2023-08-01
11511970 High friction and wear resistant elevator sheave liner Hong Yang 2022-11-29
11407616 Elevator belt surface protection for installation Hong Yang 2022-08-09
11111108 Coated sheave David R. Torlai 2021-09-07
10647547 Methods and apparatuses for applying a substrate onto an elevator sheave David R. Torlai , Peter Keyo , Lance L. Lavender , Hong Yang 2020-05-12
10023432 Guide rail for elevator David R. Torlai 2018-07-17
9701517 Methods and apparatuses for applying a substrate onto an elevator sheave David R. Torlai , Peter Keyo , Lance L. Lavender , Hong Yang 2017-07-11
8091620 Multi-channel flat-tube heat exchanger Mikhail B. Gorbounov , Igor Vaisman , Parmesh Verma , Lisa P. Sylvia , Gary D. Winch 2012-01-10
7341677 Non-carcinogenic corrosion inhibiting additive Xiaomei Yu , Weilong Zhang , Thomas J. Garosshen , Promila Bhatia , Mark R. Jaworowski +4 more 2008-03-11
$52,267,000
6889179 Method of simulating environmental exposure Sandra Jayne Downey 2005-05-03
