Karna; Toivo
Patent Applications and Registrations
Patent applications and USPTO patent grants for Karna; Toivo.The latest application filed is for "method and apparatus for preparing polyaniline".
- Karna; Toivo - Fin-06400 Porvoo FI
- Karna; Toivo - Porvoo FI
| Patent | Date |
|---|---|
| Method and apparatus for preparing polyaniline Grant 6,509,502 - Jussila , et al. January 21, 2 | 2003-01-21 |
| Electrically conductive compositions and methods for their preparation Grant 5,340,499 - Karna , et al. August 23, 1 | 1994-08-23 |
| Mounting fixture for storage battery Grant 4,966,346 - Karna , et al. October 30, 1 | 1990-10-30 |
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