| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 15 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Platform constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hirata Yoshiaki | 11 |
| #2 | Tanaka Fumio | 2 |
| #3 | Tanaka Takashi | 2 |
| #4 | Tanaka Tsutomu | 2 |
| #5 | Shimano Tsunayasu | 1 |
| #6 | Itagaki Yukio | 1 |
| #7 | Uchisaki Iwao | 1 |
| #8 | Senboku Toshiharu | 1 |
| #9 | Nagata Isamu | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2012172379A | Indication panel | |
| JP2012062677A | Traffic cone | |
| JP2011089309A | Adapter for mounting cone indication lamp | |
| JP2011084979A | Sign implement | |
| JP2010018965A | Sign implement | |
| JP2008031647A | Stand for barricade | |
| JP2004346738A | Road sign tool | |
| JP2004257018A | Sign tool | |
| JP2002327412A | Road sign implement | |
| JP2002250017A | Road sign tool | |
| JP2001182063A | Inserting device for earth retaining steel | |
| JP2000303416A | Color cone | |
| JPH10102445A | Folding type signpost | |
| JPH1018246A | Foldable marking tool | |
| JPH08209983A | Fence for construction work |