20.4
02/09/1988
RPI 903
The letters patent expired on 09/12/1995: 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: 02/09/1988. We update with every new RPI gazette, published weekly.
Applicants
Y. C. (pessoa física)
JP
Inventors
E. H. (pessoa física)
S. S. (pessoa física)
IPC Classification
Priority claims
JP
79-88466 · 07/12/1979
JP
79-88467 · 07/12/1979
Publications in the Brazilian Industrial Property Gazette (RPI).
02/09/1988
RPI 903
#16.1
02/28/1984
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11/01/1983
RPI 680
#13.1
09/27/1983
RPI 675
#9.1
05/31/1983
RPI 658
#6.1
12/14/1982
RPI 634
#21.1
09/12/1995
RPI 1293
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