20.7
11/21/1989
RPI 996
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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
ALCAN BRASIL [BR]
Inventors
M. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/21/1989
RPI 996
#16.1
02/28/1989
RPI 958
#13.1
11/01/1988
RPI 941
07/12/1988
RPI 925
02/17/1988
RPI 904
#12.2
09/29/1987
RPI 884
#9.2
06/30/1987
RPI 871
#4.1
08/05/1986
RPI 824
#3.1
10/08/1985
RPI 781
#2.1
05/15/1984
RPI 708
#21.1
10/04/1994
RPI 1244
From the same holder
Same category
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