Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996160 | Method and apparatus for quantitative measurement of ionic and organic contaminants remaining on cleaned surfaces | Warren F. Richey | 1991-02-26 |
| 4731154 | Method and apparatus for quantitative measurement of organic contaminants remaining on cleaned surfaces | Warren F. Richey | 1988-03-15 |