How many patents does
Baoji Petroleum Machinery Company have?
patents
278
families
244
granted
37
applications
241
CN
271
US
4
WO
1
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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Baoji Petroleum Machinery Company
Top ten assignees appearing on patents
2018
Baoji Petroleum Machinery Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| rotary lock block type drilling riser connector | 7 | 2011 |
| drill pump cylinder sleeve inside and outside superficial cooling device | 3 | 2007 |
| combined annular blowout preventer | 2 | 2009 |
| blowout preventing box of continuous oil pipe and drill rod | 2 | 2011 |
| method for adjusting windage of double-row self-aligning roller bearing in dissection-ty… 🛈 | 2 | 2011 |
| underwater oil pipe hanger embedded guiding and positioning device | 2 | 2011 |
| integrated oil casing head | 2 | 2011 |
| combined flow-increasing connector for marine drilling riser | 2 | 2009 |
| spindle type metal sealing and metal framework type rubber sealing sleeve hanger | 2 | 2011 |
| method for processing winch frame in winch of petroleum drilling machine | 2 | 2010 |