Concessão da patente
#16.1
07/31/1984
RPI 719
The letters patent expired on 05/03/1994: 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: 07/31/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
C. T. (pessoa física)
US
S. S. (pessoa física)
US
IPC Classification
Priority claims
US
691773 · 03/30/1978
US
836625 · 09/26/1977
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