How many patents does
Baoji Oilfield Machinery Company have?
patents
714
families
592
granted
120
applications
594
CN
707
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 Oilfield Machinery Company
Top ten assignees appearing on patents
2009 - 2018
2018
Baoji Oilfield 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 |
| petroleum drilling machine tower-shaped derrick sleeving mounting method | 2 | 2015 |
| chain gear-shifting hanging device for automatic catwalk | 2 | 2015 |
| casting method of mud pump air dome shell for bearing pressure | 2 | 2015 |
| underwater multi-channel hydraulic fast connecting device | 2 | 2015 |
| anti-loosening method for valve deck of drilling pump | 2 | 2015 |
| method for processing curved slots on conical curved surface of driving ring body | 2 | 2015 |
| free forging method for blowout preventer body used for petroleum drilling and production | 2 | 2015 |
| method for slotting and cutting inner wall of noncontinuous box | 2 | 2015 |