How many patents does
China Huanqiu Contracting & Engineering Corporation have?
patents
382
families
306
granted
82
applications
300
CN
380
RoW
2
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The report contains ten-year analysis with the following sections
- patent filing analysis
- worldwide filing analysis
- patent family analysis
- application analysis
- granted analysis
- classification analysis
- citation analysis
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China Huanqiu Contracting & Engineering Corporation
Top ten assignees appearing on patents
2009 - 2018
2009
2018
China Huanqiu Contracting & Engineering Corporation
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| signal collecting and monitoring system based on wireless node network | 4 | 2013 |
| horizontal double-sided radiation vacuum furnace for vacuum deep cut of heavy crude oil | 2 | 2013 |
| natural gas liquefaction system and method with bi-circulating mixed refrigerant | 2 | 2011 |
| liquefied natural gas loading system and method | 2 | 2011 |
| practical reinforcement determining method for prestressed concrete of full-capacity typ… 🛈 | 2 | 2012 |
| device for controlling endpoint of gasoline blending component extracted from tower side… 🛈 | 2 | 2012 |
| high-nickel ductile iron used at low-temperature and casting method thereof | 2 | 2013 |
| method for automatically generating pipeline meter flow diagram | 2 | 2013 |
| oil-water separation method and device for chilling system in process using coal-based m… 🛈 | 2 | 2011 |
| cooling system and method of unshipping pipeline of liquefied natural gas receiving stat… 🛈 | 2 | 2012 |