20.4
08/23/1983
RPI 670
The letters patent expired on 07/13/1993: 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: 08/23/1983. We update with every new RPI gazette, published weekly.
Applicants
DEGUSSA
Inventors
K. H. (pessoa física)
S. C. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
08/23/1983
RPI 670
#16.1
11/30/1982
RPI 632
#13.1
09/08/1982
RPI 620
#9.1
05/18/1982
RPI 604
02/09/1982
RPI 590
#21.1
07/13/1993
RPI 1180
From the same holder
Same category
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