Concessão da patente
#16.1
02/28/1984
RPI 697
The letters patent expired on 11/30/1993: 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: 02/28/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
S. D. (pessoa física)
US
W. G. (pessoa física)
US
Priority claims
US
794164 · 05/05/1978
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/28/1984
RPI 697
#13.1
11/29/1983
RPI 684
#9.1
08/09/1983
RPI 668
#6.1
03/15/1983
RPI 647
#21.1
11/30/1993
RPI 1200
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.