20.7
09/30/1986
RPI 832
The letters patent expired on 06/21/1994: 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: 09/30/1986. We update with every new RPI gazette, published weekly.
Applicants
ELECTROLYSER CORP LTD
NORANDA MINES LTD
Inventors
B. J. (pessoa física)
H. M. (pessoa física)
L. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/30/1986
RPI 832
09/23/1986
RPI 831
#22.1
06/04/1985
RPI 763
#16.1
02/28/1984
RPI 697
#13.1
11/29/1983
RPI 684
#9.1
08/09/1983
RPI 668
#6.1
06/01/1982
RPI 606
#21.1
06/21/1994
RPI 1229
Same category
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