Concessão da patente
#16.1
09/27/1988
RPI 936
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: 09/27/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
P. F. (pessoa física)
GB
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/27/1988
RPI 936
#13.1
06/21/1988
RPI 922
#9.1
03/01/1988
RPI 906
#15.11
09/01/1987
RPI 880
#6.1
09/01/1987
RPI 880
#7.1
11/16/1983
RPI 682
05/25/1982
RPI 605
#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.