Granted Patent
Utility
US 6,606,331 · App. 09/900,150
Step-tunable all-fiber laser apparatus and method for dense wavelength division multiplexed applications
Inventors:
João M. Sousa, Francisco Araujo, Paulo T. Guerreiro, Luis Alberto de Almeida Ferreira, Antonio Lobo Ribeiro, José R. Salcedo
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Jul 9, 2001
Inventors
João M. Sousa
Francisco Araujo
Paulo T. Guerreiro
Luis Alberto de Almeida Ferreira
Antonio Lobo Ribeiro
José R. Salcedo
Assignee (at issue)
Multiwave Networks Portugal Lda
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.