Wietsma; Popke
Patent Applications and Registrations
Patent applications and USPTO patent grants for Wietsma; Popke.The latest application filed is for "preparation of impregnated fibers".
- Wietsma; Popke - Velp NL
| Patent | Date |
|---|---|
| Preparation of impregnated fibers Grant 4,081,318 - Wietsma March 28, 1 | 1978-03-28 |
| Process for the impregnation of a wet fiber web with a heat sensitized foamed latex binder Grant 4,018,647 - Wietsma April 19, 1 | 1977-04-19 |
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