Concessão da patente
#16.1
06/24/1986
RPI 818
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: 06/24/1986. We update with every new RPI gazette, published weekly.
Applicants
ENGELHARD MIN & CHEM
Inventors
B. D. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/24/1986
RPI 818
02/04/1986
RPI 798
#12.1
06/28/1983
RPI 662
#9.1
03/08/1983
RPI 646
06/22/1982
RPI 609
#5.1
04/06/1982
RPI 598
#4.1
10/13/1981
RPI 573
#21.1
06/21/1994
RPI 1229
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Same category
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