| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 14 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakajima Kazuo | 6 |
| #2 | Nakajima Shiro | 5 |
| #3 | Nakajima Sadayoshi | 2 |
| #4 | Shinozaki Kazumi | 1 |
| #5 | Watanabe Kazufumi | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2008063736A | Concrete void slab | |
| JP2007314944A | Anchor bolt and tool for installing the same | |
| JP2005119032A | Anchor hole drilling tool for executing anchor metal fittings | |
| JP2004076853A | Anchor fitting | |
| JP2003004013A | Fastener | |
| JP2002266435A | Anchor fitting | |
| JP2002227310A | Post-constructing anchor | |
| JP2001065094A | Concrete form used for construction of concrete floor | |
| JPH1080916A | Concrete placing joint parting board | |
| JPH09184189A | Locking device for cover of u-shaped gutter | |
| JPH0914235A | Hook bolt | |
| JPH08145026A | Hook bolt | |
| JPH08145027A | Hook bolt | |
| JPH0821427A | Hook bolt |