Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11241769 | Methods and apparatus for profile and surface preparation of retaining rings utilized in chemical mechanical polishing processes | David Masayuki Ishikawa, Jeonghoon Oh, Garrett H. Sin, Charles C. Garretson, Huanbo Zhang +2 more | 2022-02-08 |
| 10252397 | Methods and apparatus for profile and surface preparation of retaining rings utilized in chemical mechanical polishing processes | David Masayuki Ishikawa, Jeonghoon Oh, Garrett H. Sin, Charles C. Garretson, Huanbo Zhang +2 more | 2019-04-09 |