16.3
01/10/1984
RPI 690
The letters patent expired on 06/21/1994: 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: 01/10/1984. We update with every new RPI gazette, published weekly.
Applicants
Y. K. (pessoa física)
Inventors
N. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
01/10/1984
RPI 690
#16.1
10/25/1983
RPI 679
#13.1
06/14/1983
RPI 660
#9.1
02/16/1983
RPI 643
06/15/1982
RPI 608
#6.1
05/18/1982
RPI 604
#21.1
06/21/1994
RPI 1229
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.