How many patents does
China Petroleum Pipeline Bureau have?
patents
884
families
716
granted
177
applications
707
CN
876
EP
3
WO
2
US
2
RoW
1
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
China Petroleum Pipeline Bureau
Top ten assignees appearing on patents
2009 - 2018
2018
China Petroleum Pipeline Bureau
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| lift and rotation mechanism for quick door-opening device | 7 | 2011 |
| an optical fiber control system for safety early-warning | 3 | 2006 |
| pipe safety prewarning system and method | 2 | 2013 |
| drill hole measurement device for directional drill | 2 | 2014 |
| traveling equipment for tofd (time of flight diffraction) detection and use method | 2 | 2013 |
| directional drill section measuring and positioning system and method | 2 | 2014 |
| two-layer manual liner anti-seepage structure for storage tank foundation and constructi… 🛈 | 2 | 2011 |
| crawler-type drive mechanism of automatic welding machine for inner circumferential seam… 🛈 | 2 | 2015 |
| vibration detection method based on coherent optical time domain reflection | 2 | 2013 |
| branch pipeline ventilation filter cover and preparation method thereof | 2 | 2013 |