How many patents does
Nittan Valve Company have?
patents
828
families
116
granted
224
applications
604
EP
175
JP
153
US
138
CN
110
WO
90
KR
80
RoW
82
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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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patent families
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Nittan Valve Company
Top ten assignees appearing on patents
Nittan Valve Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| hollow poppet valve | 29 | 2012 |
| engine valve | 18 | 2012 |
| hollow poppet valve | 16 | 2014 |
| internal combustion engine with power-generating member | 15 | 2013 |
| hollow poppet valve | 15 | 2013 |
| hollow poppet valve | 14 | 2013 |
| ni-fe-cr-based alloy and engine valve coated with same | 14 | 2011 |
| method for manufacturing hollow poppet valve | 13 | 2013 |
| exhaust poppet valve and solution treatment method of poppet valve | 13 | 2008 |
| workpiece inspection equipment | 13 | 2013 |