How many patents does
Harbin Dongan Engine have?
patents
510
families
450
granted
61
applications
449
CN
510
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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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Harbin Dongan Engine
Top ten assignees appearing on patents
2009 - 2018
| harbin dongan engine (group) compa… 🛈 | 457 |
| avic harbin dongan engine (group) … 🛈 | 1 |
2018
Harbin Dongan Engine
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| method for repairing cracks in installing support of combustion box | 2 | 2013 |
| self-locking snap ring | 2 | 2015 |
| secondary carburizing technological method of 16cr3niwmovnbe material | 2 | 2012 |
| preparation method for nickel chromium-chromium carbide coating with high hardness and l… 🛈 | 2 | 2014 |
| gas-leading sealing structure of gas turbine | 2 | 2012 |
| starting device of gas turbine engine | 2 | 2012 |
| refining method for mgyndzr alloy | 2 | 2012 |
| overhauling method for foreign speed reducer of helicopter | 2 | 2012 |
| ignition device having power compensation function | 2 | 2015 |
| inspection and regulation device of arc end tooth gauge | 2 | 2011 |