20.7
08/22/1989
RPI 983
The letters patent expired on 10/04/1994: 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: 08/22/1989. We update with every new RPI gazette, published weekly.
Applicants
ALCAN BRASIL [BR]
Inventors
R. G. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/22/1989
RPI 983
#16.1
11/29/1988
RPI 945
#13.1
07/12/1988
RPI 925
05/17/1988
RPI 917
#12.1
08/04/1987
RPI 876
#9.1
03/31/1987
RPI 858
#6.1
09/30/1986
RPI 832
#4.1
02/12/1986
RPI 799
#3.1
09/17/1985
RPI 778
#2.1
05/08/1984
RPI 707
#21.1
10/04/1994
RPI 1244
From the same holder
Same category
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