How many patents does
Changzhi Qinghua Machinery Factory have?
patents
545
families
479
granted
69
applications
476
CN
545
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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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Changzhi Qinghua Machinery Factory
Top ten assignees appearing on patents
2018
Changzhi Qinghua Machinery Factory
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| assembling tool of steel wire rope inhaul cable in lorry-mounted crane boom | 2 | 2013 |
| sealed and insulated mining rescue capsule partition door | 2 | 2011 |
| bottom cap self-opening type garbage collection box | 2 | 2016 |
| thin-wall cylinder barrel extruding, filling and steady-stage outer circle machining met… 🛈 | 2 | 2015 |
| automatic air curtain spraying switching control device for refuge chambers | 2 | 2013 |
| movable numerical control oil cylinder body redundant material control method | 2 | 2015 |
| push-and-pull mechanism | 2 | 2016 |
| sequence oil cylinder control valve | 2 | 2016 |
| pressure optimization computing method for hydraulic system of arm drawing mechanism | 2 | 2012 |
| slender and thin-walled step hole type inner-circle and outside-square structure finish … 🛈 | 2 | 2015 |