Granted Patent
Utility
US 6,444,025 · App. 09/786,964
Red-tinged bismuth vanadate pigments
Inventors:
Leonardus Johannes Hubertus Erkens, Gregor Schmitt, Hendrikus Maria Anna Hamers, Johannes Maria Martinus Luijten, Jozef Gertruda Emanuel Mains, Helena Francisca Maria Schulpen-Vleugels
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Mar 12, 2001
Inventors
Leonardus Johannes Hubertus Erkens
Gregor Schmitt
Hendrikus Maria Anna Hamers
Johannes Maria Martinus Luijten
Jozef Gertruda Emanuel Mains
Helena Francisca Maria Schulpen-Vleugels
Assignee (at issue)
Ciba Specialty Chemicals Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.