20.4
09/15/1987
RPI 882
The letters patent expired on 04/25/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 09/15/1987. We update with every new RPI gazette, published weekly.
Applicants
R. A. (pessoa física)
Inventors
No inventors listed.
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
09/15/1987
RPI 882
#13.1
09/21/1982
RPI 622
#9.1
06/01/1982
RPI 606
#21.1
04/25/1995
RPI 1273
From the same holder
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.