20.4
12/13/1988
RPI 947
The letters patent expired on 04/04/1995: 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: 12/13/1988. We update with every new RPI gazette, published weekly.
Applicants
C. A. (pessoa física)
S. A. (pessoa física)
Inventors
C. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
12/13/1988
RPI 947
12/06/1988
RPI 946
03/20/1984
RPI 700
#16.1
12/27/1983
RPI 688
#13.1
08/30/1983
RPI 671
#9.1
04/12/1983
RPI 651
#5.1
05/04/1982
RPI 602
#4.1
11/17/1981
RPI 578
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C12F 1/00; F28B 1/02.
03/27/2018
RPI 2464
#21.1
04/04/1995
RPI 1270
From the same holder
Same category
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