| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 225 | |
| #2 | Republic of Korea | 5 | |
| #3 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Civil engineering | |
| #3 | Chemical engineering | |
| #4 | Environmental technology | |
| #5 | Consumer goods | |
| #6 | Materials and metallurgy | |
| #7 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Domestic plumbing installations | |
| #3 | Cleaning | |
| #4 | Climate change adaptation technologies | |
| #5 | Laundering textiles | |
| #6 | Venting or aerating devices | |
| #7 | Pipe-line systems | |
| #8 | Shafts | |
| #9 | Alloys | |
| #10 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Sakamoto Takeshi | 68 |
| #2 | Ishikawa Kazuo | 40 |
| #3 | Terada Takashi | 39 |
| #4 | Okada Daisuke | 33 |
| #5 | Kato Shinichi | 32 |
| #6 | Tsuda Yuji | 29 |
| #7 | Tokuda Masaya | 27 |
| #8 | Otani Yasushige | 17 |
| #9 | Horikawa Yukihiro | 16 |
| #10 | Kobayashi Isamu | 14 |
| Publication | Filing date | Title |
|---|---|---|
| JP2020172856A | Duplex meter unit | |
| JP2020190330A | Swing coupling | |
| JP2019113566A | Duplex meter unit | |
| JP2020153452A | Method of replacing existing corporation stop | |
| JP2020153451A | Method of removing existing corporation stop, and method of replacing existing corporation stop | |
| JP2020139578A | Swingable joint | |
| JP2020131350A | Marking jig for piping | |
| JP2020085681A | Water meter | |
| JP2019065694A | Water-supply pipe structure | |
| JP2020032500A | Piping cutoff device | |
| JP2020032496A | Piping cutting device | |
| JP2020034103A | Pipe installation method | |
| JP2020034104A | Pipe insertion tool | |
| JP2019132028A | Wall built-in faucet | |
| JP2019116911A | Water supply pipe corrosion proof kit, corrosion proof sleeve and installing jig for corrosion proof sleeve | |
| JP2019107705A | Insertion tool of water diversion core | |
| JP2019100489A | Check valve | |
| JP2019090503A | Pipe joint | |
| JP2019035281A | Duplex meter unit | |
| JP2017223681A | Duplex meter unit |