Solicitação de exame técnico
#4.1
07/12/1988
RPI 925
Application data
Number
PI8604185Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 07/12/1988. We update with every new RPI gazette, published weekly.
Applicants
Petrobras Mineração S.A - petromisa
RJ, BR
Inventors
A. P. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
07/12/1988
RPI 925
#3.1
05/03/1988
RPI 915
#2.1
03/17/1987
RPI 856
#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era E21C 41/08.
03/20/2018
RPI 2463
#21.1
Patente extinta em 02/09/2001
07/22/2008
RPI 1959
#16.1
09/28/1993
RPI 1191
#13.1
08/17/1993
RPI 1185
07/13/1993
RPI 1180
#12.2
06/09/1992
RPI 1123
#9.2
02/04/1992
RPI 1105
#7.1
07/02/1991
RPI 1074
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.