Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5433881 | Granulation process for making granular bleach activator compositions and resulting product | John Townend, John David Withenshaw | 1995-07-18 |
| 4921631 | Bleach activator compositions | John David Withenshaw | 1990-05-01 |
| 4671883 | Fluid loss control additives for oil-based well-working fluids | David L. Connell | 1987-06-09 |