Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8974685 | Fine-processing agent and fine-processing method | Takanobu Kujime, Keiichi Nii | 2015-03-10 |
| 8501138 | Production method of high purity silver tetrafluoroborate | Hirohisa Kikuyama, Masahide Waki, Tomohiko Satonaga, Kazuhiko Shogami | 2013-08-06 |
| 8066898 | Surface treatment solution for the fine surface processing of a glass substrate containing multiple ingredients | Hirohisa Kikuyama, Tatsuhiro Yabune, Tadahiro Ohmi | 2011-11-29 |
| 7994063 | Method for manufacturing semiconductor device and method for cleaning semiconductor substrate | Tadahiro Ohmi, Akinobu Teramoto, Rui Hasebe | 2011-08-09 |
| 6905606 | Method of removing calcium from water containing calcium hydrogen carbonate in high concentration | Hirohisa Kikuyama, Toshirou Fukudome | 2005-06-14 |
| 6821452 | Etchant | Hirohisa Kikuyama, Tatsuhiro Yabune, Tadahiro Ohmi | 2004-11-23 |
| 6797194 | Surface treating for micromachining and method for surface treatment | Hirohisa Kikuyama, Tatsuhiro Yabune, Tadahiro Ohmi | 2004-09-28 |
| 6699603 | Stainless steel having passive fluoride film formed thereon and equipment manufactured therefrom | Tadahiro Ohmi, Hirohisa Kikuyama, Hiroto Izumi, Takanobu Kujime | 2004-03-02 |
| 6666973 | Method for fixing fluorine and phosphorus in waste water containing fluorophosphoric acid-derived compound to remove them | Hirohisa Kikuyama, Toshirou Fukudome | 2003-12-23 |
| 6585910 | Etchant | Hirohisa Kikuyama, Tatsuhiro Yabune, Tadahiro Ohmi | 2003-07-01 |
| 6027571 | Surface treatment for micromachining | Hirohisa Kikuyama, Tatsuhiro Yabune, Tadahiro Ohmi | 2000-02-22 |
| 5714407 | Etching agent, electronic device and method of manufacturing the device | Matagoro Maeno, Hirohisa Kikuyama, Tatsuhiro Yabune, Jun Takano, Hirofumi Fukui +5 more | 1998-02-03 |