Inventor · disambiguated record
Changxiang Xu
Also filed as: XU CHANGXIANG
20 granted patents·4 pending applications·106 citations·filing 1989–2022
93Inventor score
Files withJIANGNAN ENVIRONMENTAL PROT GROUP INC9XU CHANGXIANG5BAOYI GROUP CO LTD3JIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROT CO LTD3QING YANG MACHINE WORKS2
Top patents by PatentIndex Score
24 records- 0195US10016721B1Ammonia-based desufurization process and apparatusJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2017·Granted Jul 10, 2018·7 cites·30 claims
- 0292US10207220B2Method and apparatus for removing sulfur oxides from gasJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2017·Granted Feb 19, 2019·4 cites·77 claims
- 0392US9370745B2Flue gas-treating method and apparatus for treating acidic tail gas by using ammonia processJIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROT CO LTD·Filed 2015·Granted Jun 21, 2016·41 cites·12 claims
- 0487US10413864B2Method and apparatus for removing sulfur oxides from gasJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2019·Granted Sep 17, 2019·2 cites·29 claims
- 0584US8864105B2Ball valve seats and ball valves designed with equilateral triangle section methodsXU CHANGXIANG·Filed 2009·Granted Oct 21, 2014·16 cites·1 claims
- 0683US10675584B2Method and apparatus for removing sulfur oxides from gasJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2019·Granted Jun 9, 2020·1 cites·20 claims
- 0782US10406478B2Ammonia-based desulfurization process and apparatusJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2018·Granted Sep 10, 2019·1 cites·30 claims
- 0882US10406477B2Method and apparatus for removing sulfur oxides from gasJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2018·Granted Sep 10, 2019·1 cites·30 claims
- 0982US10399033B2Ammonia-based desulfurization process and apparatusJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2019·Granted Sep 3, 2019·1 cites·30 claims
- 1079US8439330B2Stem shoulder seal with double rings and an assembly of independent dual stem sealsXU CHANGXIANG·Filed 2011·Granted May 14, 2013·7 cites·4 claims
- 1172US10561982B2Ammonia-based desulfurization process and apparatusJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2019·Granted Feb 18, 2020·0 cites·30 claims
- 1269US10413865B2Ammonia-based desulfurization process and apparatusJIANGNAN ENVIRONMENTAL PROT GROUP INC·Filed 2018·Granted Sep 17, 2019·0 cites·30 claims
- 1369US8382067B2Stem sealZHEJIANG CHINA VALVE CO LTD·Filed 2006·Granted Feb 26, 2013·7 cites·11 claims
- 1466US11841092B2Stem seals with triangular ringsBAOYI GROUP CO LTD·Filed 2022·Granted Dec 12, 2023·0 cites·9 claims
- 1565US8714599B2Sealing microsawtooth ring joint of two opposing surfacesXU CHANGXIANG·Filed 2009·Granted May 6, 2014·2 cites·4 claims
- 1662US9175778B2Sealing microsawtooth ring joint of two opposing surfacesXU CHANGXIANG·Filed 2014·Granted Nov 3, 2015·1 cites·2 claims
- 1754US11543053B2Stem seals with triangular ringsBAOYI GROUP CO LTD·Filed 2018·Granted Jan 3, 2023·0 cites·5 claims
- 1849US2010102554A1Tube Fitting with either Single or Double Ferrule Swage Design Common to One SystemXU CHANGXIANG·Filed 2007·Application pending·0 cites
- 1948US2011254234A1Gland SealsZHEJIANG CHINA VALVE CO LTD·Filed 2009·Application pending·0 cites
- 2044US4997303AEccentric dowel pin and pin-adjusted structure in hole type modular tooling systemsQING YANG MACHINE WORKS·Filed 1989·Granted Mar 5, 1991·10 cites·3 claims
- 2142US2016030883A1Method and apparatus for treating acidic tail gas by using ammonia process flue gasJIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROT CO LTD·Filed 2013·Application pending·0 cites
- 2239US10996133B2Sealing tightness testing deviceBAOYI GROUP CO LTD·Filed 2016·Granted May 4, 2021·0 cites·21 claims
- 2333US2015352489A1Effective removal of acidic sulfide gas using ammonia-based desulfurizationJIANGSU NEW CENTURY JIANGNAN ENVIRONMENTAL PROT CO LTD·Filed 2015·Application pending·0 cites
- 2430US4961268AModular method and system for setting fixed-angles of modular toolsQING YANG MACHINE WORKS·Filed 1989·Granted Oct 9, 1990·5 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →