Concessão da patente
#16.1
03/27/1984
RPI 701
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: 03/27/1984. 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
IPC Classification
Priority claims
US
794198 · 05/05/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
03/27/1984
RPI 701
#13.1
01/03/1984
RPI 689
#9.1
09/20/1983
RPI 674
#6.1
03/01/1983
RPI 645
#21.1
11/30/1993
RPI 1200
From the same holder
Same category
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