Top Inventors at Keisei Rose Nurseries All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Shinya Miyano | 23 |
| 2 | Kazunari Iwaki | 18 |
| 3 | Takuro Ishihara | 12 |
| #4 | Hiroshi Hirabayashi | 8 |
| #5 | Kiyoshi Miyazaki | 8 |
| #6 | Shunsuke Takeuchi | 8 |
| #7 | Kenichi Suzuki | 3 |
| #8 | Rieko Suwa | 3 |
| #9 | Shinzo Tsuda | 3 |
| #10 | Susumu Matsubara | 3 |
| #11 | Ushio Sakazaki | 2 |
| #12 | Yuji Tamura | 2 |
| #13 | Jorn Hansson | 1 |
| #14 | Takeshi Kanaya | 1 |
| #15 | Yasuko Isobe | 1 |
| #16 | Yukihiro Ikeda | 1 |