How many patents does
Bunka Shutter Company have?
patents
723
families
425
granted
222
applications
501
JP
667
EP
18
CN
9
WO
8
US
4
RoW
17
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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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Bunka Shutter Company
Top ten assignees appearing on patents
2009 - 2018
| bunka shutter company | 483 |
| bx tetsuya | 8 |
| bunka shuter service | 6 |
| grow kogyo | 4 |
| hayashiguchi kogyo | 3 |
| ksk | 2 |
| tr kenzai | 2 |
| hiraoka & company | 2 |
| tetsuya kogyo | 2 |
| chuo spring company | 1 |
2018
| bunka shutter company | 4 |
Bunka Shutter Company
The top ten patent families are
|
Title of patent family (most common patent title) |
Family members |
Filing year |
|---|---|---|
| mechanical opening and closing body stop device for opening and closing apparatus | 26 | 2008 |
| opening part waterproofing device and opening part waterproofing sheet | 18 | 2011 |
| device for stopping mechanical opening/closing body of opening/closing apparatus | 14 | 2010 |
| opening and closing device | 13 | 2008 |
| opening/closing body stop device for opening/closing device | 12 | 2011 |
| gate device with pressure difference mitigating mechanism | 10 | 2012 |
| opening/closing device | 9 | 2012 |
| obstacle sensing structure of shutter device | 7 | 2007 |
| multi-step type sliding door apparatus | 7 | 2003 |
| water stop device | 5 | 2015 |