20.4
08/22/1989
RPI 983
The letters patent expired on 12/07/1993: 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: 08/22/1989. We update with every new RPI gazette, published weekly.
Applicants
SOBRAL IND COM SA
Inventors
Z. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/22/1989
RPI 983
#16.1
02/26/1985
RPI 749
10/30/1984
RPI 732
#12.2
08/07/1984
RPI 720
#9.2
04/17/1984
RPI 704
#4.1
08/09/1983
RPI 668
#5.1
05/24/1983
RPI 657
#4.1
12/14/1982
RPI 634
#3.2
05/18/1982
RPI 604
#21.1
12/07/1993
RPI 1201
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.