Solicitação de exame técnico
#4.1
05/13/1986
RPI 812
Application data
Number
PI8401889Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 05/13/1986. We update with every new RPI gazette, published weekly.
Applicants
DU PONT [US]
Inventors
C. K. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/13/1986
RPI 812
#3.1
11/26/1985
RPI 788
#2.1
07/03/1984
RPI 715
#21.1
Patente extinta em 24/04/99
07/08/2008
RPI 1957
#15.11
10/15/1991
RPI 1089
#16.1
09/25/1990
RPI 1034
#13.1
07/31/1990
RPI 1026
#9.1
03/20/1990
RPI 1010
From the same holder
Same category
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