20.4
02/23/1988
RPI 905
The letters patent expired on 12/26/1995: 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: 02/23/1988. We update with every new RPI gazette, published weekly.
Applicants
Codistil S.A - Denini
SP, BR
Inventors
G. N. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
02/23/1988
RPI 905
02/17/1988
RPI 904
#20.1
02/09/1988
RPI 903
#16.1
08/27/1985
RPI 775
#13.1
05/07/1985
RPI 759
#9.1
01/15/1985
RPI 743
#15.11
10/02/1984
RPI 728
#6.1
02/14/1984
RPI 695
#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era B01D 29/04.
03/27/2018
RPI 2464
#21.1
12/26/1995
RPI 1308
From the same holder
Same category
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