Concessão da patente
#16.1
11/29/1983
RPI 684
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: 11/29/1983. 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
52465/77 · 12/16/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/29/1983
RPI 684
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09/27/1983
RPI 675
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#6.1
11/03/1982
RPI 628
04/06/1982
RPI 598
#21.1
05/24/1994
RPI 1225
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