| # | Country | Total Patents | |
|---|---|---|---|
| #1 | China | 4 | |
| #2 | EPO (European Patent Office) | 3 | |
| #3 | WIPO (World Intellectual Property Organization) | 3 | |
| #4 | Canada | 2 | |
| #5 | Hong Kong | 2 | |
| #6 | United States | 2 | |
| #7 | Mexico | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Structural elements | |
| #2 | Unspecified technologies | |
| #3 | Nails | |
| #4 | General building constructions |
| # | Name | Total Patents |
|---|---|---|
| #1 | Nakamura Mituo | 13 |
| #2 | Mituo Nakamura | 3 |
| #3 | Mitou Nakamura | 1 |
| Publication | Filing date | Title |
|---|---|---|
| MX2008008680A | Reinforcing-bar engagement device. | |
| US2010186340A1 | Reinforcing Bar Locking Device | |
| EP1964993A1 | Nut for reinforcing bar | |
| CN101331282A | Reinforcing-bar connector | |
| CN1826450A | Block for construction, panel for construction using the block, and method of molding panel for construction |