| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 120 | |
| #2 | WIPO (World Intellectual Property Organization) | 4 | |
| #3 | China | 3 | |
| #4 | Hong Kong | 1 | |
| #5 | Republic of Korea | 1 | |
| #6 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Environmental technology | |
| #3 | Machine tools | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Okazaki Yoshiro | 63 |
| #2 | Fujiwara Takao | 26 |
| #3 | Nishimura Kazunari | 21 |
| #4 | Kishimoto Yuji | 16 |
| #5 | Inoue Masachika | 16 |
| #6 | Osuga Shoichi | 13 |
| #7 | Tani Masashi | 10 |
| #8 | Motonaka Hiroshi | 9 |
| #9 | Yamamura Shigeru | 9 |
| #10 | Masukane Satoyuki | 9 |
| Publication | Filing date | Title |
|---|---|---|
| JP2020186803A | Joint for flexible pipe | |
| JP2019086155A | Pipe joint | |
| JP2020070819A | Pipe joint | |
| JP2019113081A | Joint | |
| JP2019015302A | Branch joint and branch work execution method | |
| JP2018119617A | Pipe connection structure | |
| JP2018115739A | Pipe joint | |
| JP2018109422A | Pipe joint | |
| JP2018071713A | Pipe unit | |
| JP2017198267A | Pipe joint | |
| JP2017116023A | Pipe unit | |
| JP2017025939A | Pipe unit | |
| JP2016217495A | Pipe joint | |
| JP2016217401A | Pipe joint | |
| JP2016200159A | Pipe joint | |
| JP2016176207A | tank | |
| JP2016109170A | Socket-and-spigot type pipe joint | |
| JP2015230050A | Union joint | |
| JP2015132279A | Pipe joint | |
| JP2015090158A | Flange type pipe joint |