| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 12 | |
| #2 | Canada | 1 | |
| #3 | Denmark | 1 | |
| #4 | United Kingdom | 1 | |
| #5 | Malaysia | 1 |
| # | Industry | |
|---|---|---|
| #1 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Physical training equipment |
| # | Name | Total Patents |
|---|---|---|
| #1 | Yoneyama Minoru | 7 |
| #2 | Takahashi Yasuo | 4 |
| #3 | Kaneko Tsutomu | 3 |
| #4 | Asai Shigeru | 3 |
| #5 | Yoneyama Shigeyoshi | 1 |
| #6 | Funabashi Masayuki | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JPS5949784A | Production of golf club head | |
| JPS5934274A | Production of golf club head | |
| JPS5928979A | Production of golf club | |
| JPS5928978A | Production of golf club | |
| JPS5881057A | Shuttle cock | |
| JPS5841576A | Shuttle cock | |
| JPS5759562A | Frame for badminton racket | |
| JPS5731879A | Shuttlecock | |
| JPS5720280A | Shuttlecock | |
| CA1137132A | Badminton racket | |
| JPS54104941A | Method of making racket | |
| JPS5492428A | Method of making badminton racket | |
| JPS5492427A | Method of making racket |