Concessão da patente
#16.1
06/24/1980
RPI 505
The letters patent expired on 11/24/1992: 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: 06/24/1980. We update with every new RPI gazette, published weekly.
Applicants
P. K. (pessoa física)
FR
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/24/1980
RPI 505
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 47/00; C07C 45/08.
03/27/2018
RPI 2464
#21.1
11/24/1992
RPI 1147
From the same holder
Same category
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