How many patents does
Sichuan Honghua Petroleum Equipment Company have?
patents
509
families
398
granted
95
applications
414
CN
487
WO
18
US
4
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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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Sichuan Honghua Petroleum Equipment Company
Top ten assignees appearing on patents
2018
Sichuan Honghua Petroleum Equipment Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| shale gas production method | 5 | 2012 |
| fluid container and component thereof | 4 | 2011 |
| automatic plate turnover mechanism for marine drilling platform | 3 | 2013 |
| assembly for mounting cylinder liners in drilling pump | 3 | 2012 |
| fracturing pump | 3 | 2012 |
| connecting and unloading device and application method thereof | 3 | 2013 |
| locking device for pile leg buried platform | 3 | 2013 |
| a guard for controlling material dispersion in a drilling pump | 3 | 2012 |
| non-rotary connector used for connecting downhole electric module | 3 | 2013 |
| bit feeding system of drilling machine | 2 | 2010 |