How many patents does
Toho Gas Company have?
patents
351
families
259
granted
71
applications
280
JP
318
US
7
EP
7
WO
4
KR
3
CN
3
RoW
9
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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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Toho Gas Company
Top ten assignees appearing on patents
2009 - 2018
2018
| rinnai company | 1 |
Toho Gas Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| combustion plate | 14 | 2009 |
| antibacterial glass mixture | 11 | 2010 |
| fuel electrode material, a fuel electrode, and a solid oxide fuel cell | 4 | 2004 |
| extraction device and method for refrigerating machine | 4 | 2011 |
| damper structure for adsorption refrigerator | 3 | 2011 |
| air ratio control device and combustion system | 2 | 2012 |
| heating system | 2 | 2012 |
| heating system | 2 | 2012 |
| molten metal-dipped burner | 2 | 2012 |
| header recovery method and header recovery device | 2 | 2012 |