Concessão da patente
#16.1
10/25/1988
RPI 940
The letters patent expired on 11/30/1993: 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: 10/25/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
B. A. (pessoa física)
GB
P. H. (pessoa física)
GB
Priority claims
GB
22755/77 · 05/30/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
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Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 109/12; A01N 9/20; C07D 211/00; C07D 307/52; A01N 43/40; C07C 67/00; C07C 241/00; C07C 251/86; C07D 213/53; C07D 333/22; C07C 251/00; C07D 213/00; C07D 307/00; C07D 333/00.
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