Concessão da patente
#16.1
06/28/1988
RPI 923
The letters patent expired on 11/22/1994: 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: 06/28/1988. We update with every new RPI gazette, published weekly.
Applicants
Duratex Sociedade Anônima
SP, BR
Inventors
C. S. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/28/1988
RPI 923
#13.1
03/01/1988
RPI 906
#9.1
11/10/1987
RPI 890
#4.1
08/05/1986
RPI 824
#3.1
04/22/1986
RPI 809
#2.1
11/20/1984
RPI 735
#21.1
11/22/1994
RPI 1251
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Same category
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