18.8
07/28/1987
RPI 875
The letters patent expired on 11/17/1992: 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: 07/28/1987. We update with every new RPI gazette, published weekly.
Applicants
R. A. (pessoa física)
DE
Inventors
E. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/28/1987
RPI 875
#16.1
07/08/1980
RPI 507
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C09J 3/14; C08L 23/06.
03/27/2018
RPI 2464
#21.1
11/17/1992
RPI 1146
From the same holder
Same category
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