Concessão da patente
#16.1
02/26/1985
RPI 749
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: 02/26/1985. We update with every new RPI gazette, published weekly.
Applicants
ENGELHARD MIN & CHEM
Inventors
G. J. (pessoa física)
Y. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
02/26/1985
RPI 749
#13.1
10/23/1984
RPI 731
#9.1
06/26/1984
RPI 714
#6.1
12/06/1983
RPI 685
07/20/1982
RPI 613
#4.1
02/02/1982
RPI 589
#21.1
06/21/1994
RPI 1229
From the same holder
Same category
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