Granted Patent
Utility
US 6,552,175 · App. 10/112,157
Reactive dyes, a process for their preparation and their use
Inventors:
Jurgen Schmiedl, Carlos Moyano
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Mar 29, 2002
Inventors
Jurgen Schmiedl
Carlos Moyano
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.