Concessão da patente
#16.1
02/28/1984
RPI 697
The letters patent expired on 05/24/1994: 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: 02/28/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
H. V. (pessoa física)
NL
IPC Classification
Priority claims
GB
54147/77 · 12/29/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/28/1984
RPI 697
#13.1
12/06/1983
RPI 685
#9.1
08/16/1983
RPI 669
#15.11
04/26/1983
RPI 653
#6.1
01/18/1983
RPI 639
04/06/1982
RPI 598
#21.1
05/24/1994
RPI 1225
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.