20.4
06/30/1987
RPI 871
The letters patent expired on 07/20/1993: 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: 06/30/1987. We update with every new RPI gazette, published weekly.
Applicants
A. C. (pessoa física)
Inventors
K. R. (pessoa física)
M. A. (pessoa física)
S. J. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
06/30/1987
RPI 871
03/17/1987
RPI 856
#18.2
01/13/1987
RPI 847
#16.1
08/31/1982
RPI 619
#13.1
01/12/1982
RPI 586
11/03/1981
RPI 576
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.