How many patents does
Okumura Corporation have?
patents
352
families
240
granted
89
applications
263
JP
305
WO
4
KR
3
EP
2
US
1
CN
1
RoW
36
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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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the following tables are just extracts from the report
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Okumura Corporation
Top ten assignees appearing on patents
Okumura Corporation
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| work subject material, surface protection sheet and method of working | 6 | 2004 |
| method of breaking up pig iron in blast furnace | 5 | 2010 |
| exchange device and exchange method for earth pressure gauge of mud pressure shield mach… 🛈 | 4 | 2013 |
| method of breaking up pig iron in blast furnace | 4 | 2010 |
| method of drilling holes in pig iron in blast furnace | 4 | 2010 |
| cutter disk of shield machine and shield machine with the same | 4 | 2013 |
| shield machine | 4 | 2013 |
| shield machine | 4 | 2013 |
| cutter disk of shield machine, shield machine with the same, and height adjustment metho… 🛈 | 4 | 2013 |
| tunnel excavator | 4 | 2013 |