Concessão da patente
#16.1
01/31/1984
RPI 693
The letters patent expired on 08/19/2008: 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: 01/31/1984. We update with every new RPI gazette, published weekly.
Applicants
KOPPERS COMPANY, INC
US
Inventors
S. P. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
01/31/1984
RPI 693
#13.1
11/16/1983
RPI 682
#9.1
07/19/1983
RPI 665
#6.1
11/30/1982
RPI 632
01/12/1982
RPI 586
#21.1
Patente extinta em 22/03/93
08/19/2008
RPI 1963
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