20.7
09/05/1989
RPI 985
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: 09/05/1989. We update with every new RPI gazette, published weekly.
Applicants
Blokret Engenharia de Pavimentações S/A
Inventors
K. F. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/05/1989
RPI 985
08/29/1989
RPI 984
#16.1
12/30/1986
RPI 845
#13.1
06/24/1986
RPI 818
#9.1
02/12/1986
RPI 799
#6.1
08/13/1985
RPI 773
#4.1
05/02/1984
RPI 706
#3.2
12/27/1983
RPI 688
#2.1
05/17/1983
RPI 656
#21.1
12/07/1993
RPI 1201
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.