Concessão da patente
#16.1
02/28/1989
RPI 958
The letters patent expired on 09/19/1995: 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: 02/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
H. P. (pessoa física)
W. S. (pessoa física)
IPC Classification
Priority claims
GB
7925164 · 07/19/1979
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/28/1989
RPI 958
#13.1
11/16/1988
RPI 943
#9.1
07/12/1988
RPI 925
#6.1
01/12/1988
RPI 899
#6.1
01/24/1984
RPI 692
#4.1
05/10/1983
RPI 655
#21.1
09/19/1995
RPI 1294
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.