How many patents does
Xian Changqing Technology Engineering Company have?
patents
427
families
346
granted
84
applications
343
CN
427
Buy the report
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
contact us for pricing
- VAT will apply to UK companies
- EU companies must supply their VAT number
Check out our sample pages |
Find companies to compare
Many companies now available
companies
12,000+
patents
42 million
patent families
23 million
Search to find companies of interest
read summary of their published patent
the following tables are just extracts from the report
the company report contains more information
Xian Changqing Technology Engineering Company
Top ten assignees appearing on patents
2018
Xian Changqing Technology Engineering Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| natural gas purification plant acid gas sulfur recovery system and method | 3 | 2015 |
| vertical type well mouth electric heater | 2 | 2015 |
| heating furnace structure | 2 | 2009 |
| oil field oil sludge drying treatment combined device and oil sludge drying treatment te… 🛈 | 2 | 2010 |
| pneumatic control switch for submerged arc welding flux conveyance | 2 | 2011 |
| h-q characteristic curve-based pipeline breakage and leakage positioning method | 2 | 2010 |
| system and method for recycling mixed hydrocarbon from well site natural gas | 2 | 2014 |
| method and device for airtight recycling of condensate oil of oil outlet pipeline of oil… 🛈 | 2 | 2014 |
| low permeability high water content oilfield potential difference type oil and water col… 🛈 | 2 | 2015 |
| low permeability oilfield produced water treating process and system | 2 | 2015 |