20.4
10/06/1987
RPI 885
The letters patent expired on 11/15/1994: 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: 10/06/1987. We update with every new RPI gazette, published weekly.
Applicants
C. J. (pessoa física)
Inventors
C. J. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
10/06/1987
RPI 885
10/06/1987
RPI 885
06/30/1987
RPI 871
06/02/1987
RPI 867
#18.2
03/17/1987
RPI 856
#16.1
02/25/1986
RPI 801
#13.1
11/12/1985
RPI 786
#9.1
07/09/1985
RPI 768
#6.1
01/02/1985
RPI 741
07/10/1984
RPI 716
#4.1
12/14/1982
RPI 634
#3.2
08/24/1982
RPI 618
#2.1
06/22/1982
RPI 609
#21.1
11/15/1994
RPI 1250
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.