Pre-Tech Co., Ltd.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Pre-Tech Co., Ltd..The latest application filed is for "apparatus and method for cleaning a precision substrate".
- Pre-Tech Co., Ltd. - Tokyo JP
- Pre-Tech Co., Ltd. - N/A
- Pre-Tech Co., Ltd. - JP JP
| Patent | Date |
|---|---|
| Apparatus and method for cleaning a precision substrate Grant 6,050,276 - Harada , et al. April 18, 2 | 2000-04-18 |
| Cleaning apparatus and a cleaning method Grant 6,003,527 - Netsu , et al. December 21, 1 | 1999-12-21 |
| Cleaning apparatus Grant 5,927,305 - Shiba July 27, 1 | 1999-07-27 |
| Apparatus and method for cleaning semiconductor wafers Grant 5,733,434 - Harada , et al. March 31, 1 | 1998-03-31 |
| Apparatus and method for cleaning semiconductor wafers Grant 5,725,753 - Harada , et al. March 10, 1 | 1998-03-10 |
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