16.3
09/27/1983
RPI 675
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: 09/27/1983. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
H. K. (pessoa física)
NL
J. B. (pessoa física)
NL
IPC Classification
Priority claims
GB
52463/77 · 12/16/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
09/27/1983
RPI 675
07/26/1983
RPI 666
#16.1
05/31/1983
RPI 658
#13.1
03/15/1983
RPI 647
#9.1
10/26/1982
RPI 627
04/06/1982
RPI 598
#21.1
05/24/1994
RPI 1225
From the same holder
Same category
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