Concessão da patente
#16.1
10/25/1988
RPI 940
The letters patent expired on 06/21/1994: 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: 10/25/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
G. H. (pessoa física)
US
L. G. (pessoa física)
IPC Classification
Priority claims
US
892045 · 03/30/1978
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