ZHEJIANG CHINA VALVE CO LTD has a total of 13 patent applications. Its first patent ever was published in 2005. It filed its patents most often in EPO (European Patent Office), WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets mechanical elements are XU CHANGXIANG, DAUME ACHIM and BOEHMER GMBH MASCHF W.
# | Country | Total Patents | |
---|---|---|---|
#1 | EPO (European Patent Office) | 5 | |
#2 | WIPO (World Intellectual Property Organization) | 4 | |
#3 | United States | 3 | |
#4 | China | 1 |
# | Industry | |
---|---|---|
#1 | Mechanical elements |
# | Technology | |
---|---|---|
#1 | Venting or aerating devices | |
#2 | Pistons and sealings | |
#3 | Pipes |
# | Name | Total Patents |
---|---|---|
#1 | Xu Changxiang | 12 |
#2 | Chen Zhanji | 2 |
#3 | Yang Mao | 2 |
#4 | Zhangxiang Xu | 1 |
Publication | Filing date | Title |
---|---|---|
WO2013131490A1 | Rectangular ring and o-ring self-sealing structures | |
EP2375110A1 | A sealing structure with groove and gasket | |
EP2375109A1 | Sealing abutting configuration with microcosmic toothed rings | |
EP2343468A1 | Double annular rod shoulder seal and independent double valve rod seal | |
EP2365236A1 | Ball valve seat which is constructed by equilateral triangle sectioning method and ball valve including it | |
EP2101096A1 | Extrude pipe connecting part with integrated single and double clamping ring | |
CN1920363A | Sealing sleeve with a triangle section |