Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6620551 | Positive plate current collector for lead storage battery and lead storage battery comprising the same | Hideki Tanaka, Yuichi Tsuboi, Yuichi Okada | 2003-09-16 |
| 6495288 | Lead-acid battery having tin in positive active material and silica in separator | Yuichi Okada, Tadashi Shiroya | 2002-12-17 |
| 6284411 | Valve regulated type battery and producing method thereof | Yuuichi Okada, Akiyoshi Kimura, Masaji Adachi, Ken Sawai | 2001-09-04 |
| 6225005 | Lead-acid battery and producing method thereof | Yuichi Okada, Tadashi Shiroya | 2001-05-01 |
| 6147035 | Lubricating oil composition containing overbased metal salicylate, amine antioxidant, phenol antioxidant, polyalkenylsuccinimide and zinc dialkyldithiophosphate | Yasunori Sougawa, Masakichi Shimada | 2000-11-14 |
| 5541013 | Sealed tubular lead-acid battery | Toshiaki Hayashi, Katsuhiro Takahashi | 1996-07-30 |
| 5217825 | Sealed lead-acid battery | Kenzi Nakamura | 1993-06-08 |