Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5082959 | Process for preparing silylated aromatic acids | Andreas Ernst, Howard B. Yokelson | 1992-01-21 | $35,907,000 |
| 4940810 | Process for producing silicon-containing aromatic polyacids | Howard B. Yokelson, Walter Partenheimer | 1990-07-10 | $21,805,000 |