Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6589124 | Hollow golf ball | Kiyoto Maruoka, Akihiro Nakahara | 2003-07-08 |
| 6200231 | Hollow solid golf ball | Keiji Moriyama, Hiroyuki Tsujinaka, Masaya Tsunoda, Akihiro Nakahara, Kiyoto Maruoka +1 more | 2001-03-13 |
| 6182970 | Hollow golf ball | Kazuhisa Fushihara, Kiyoto Maruoka, Akihiro Nakahara | 2001-02-06 |
| 6126560 | Method of making hollow golf ball | Kiyoto Maruoka, Akihiro Nakahara | 2000-10-03 |
| 6106656 | Method for the production of a hollow golf ball | Kiyoto Maruoka, Akihiro Nakahara, Kazuhisa Fushihara, Yutaka Yoshida | 2000-08-22 |
| 5944621 | Hollow golf ball | Hiroyuki Tsujinaka, Minoru Tsujinaka, legal representative, Kinuko Tsujinaka, legal representative, Masaya Tsunoda, Keiji Moriyama +1 more | 1999-08-31 |