Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7704552 | Process for producing chemically treated amorphous precipitated silica | Timothy A. Okel, James Richard Hahn | 2010-04-27 |
| 7687107 | Process for producing chemically modified amorphous precipitated silica | Timothy A. Okel, James Richard Hahn | 2010-03-30 |
| 6114023 | Printable microporous material | Richard A. Schwarz | 2000-09-05 |
| 5948557 | Very thin microporous material | Richard W. Pekala, Richard A. Schwarz, Robert C. Wang | 1999-09-07 |