Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6444025 | Red-tinged bismuth vanadate pigments | Leonardus Johannes Hubertus Erkens, Gregor Schmitt, Hendrikus Maria Anna Hamers, Jozef Gertruda Emanuel Mains, Helena Francisca Maria Schulpen-Vleugels | 2002-09-03 |
| 5976238 | Bismuth vanadate pigment powder mixtures | Leonardus Johannes Hubertus Erkens, Gregor Schmitt, Hendrikus Maria Anna Hamers, Jozef Gertruda Emanuel Mains | 1999-11-02 |
| 5853472 | Transparent bismuth vanadate pigments | Leonardus Johannes Hubertus Erkens, Gregor Schmitt, Hendrikus Maria Anna Hamers, Jozef Gertruda Emanuel Mains | 1998-12-29 |