Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6860941 | METHOD FOR MANUFACTURING HIGH-PURITY POTASSIUM FLUORONIOBATE CRYSTAL, RECRYSTALLIZATION BATH USED IN MANUFACTURING METHOD THEREOF AND HIGH-PURITY POTASSIUM FLUOROTANTALATE CRYSTAL OR HIGH-PURITY POTASSIUM FLUORONIOBATE CRYSTAL OBTAINED BY MANUFACTURING METHOD THEREOF | Yoshio Sohama, Kenji Higashi, Masanori Kinoshita | 2005-03-01 |
| 6764669 | Method for producing fluorinated potassium tantalate crystal | Kenji Higashi, Yoshitsugu Uchino, Shigeru Kuwabara | 2004-07-20 |
| 6641641 | Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein | Yoshio Sohama, Hiroyuki Watanabe | 2003-11-04 |