Concessão da patente
#16.1
02/28/1984
RPI 697
The letters patent expired on 07/06/1993: 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
H. K. (pessoa física)
NL
L. S. (pessoa física)
NL
W. S. (pessoa física)
NL
IPC Classification
Priority claims
NL
7613957 · 12/16/1976
NL
7708511 · 08/02/1977
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
08/31/1982
RPI 619
#6.1
01/05/1982
RPI 585
#21.1
07/06/1993
RPI 1179
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