Publicação do pedido de patente
#3.1
07/04/1989
RPI 976
Application data
Number
PI8805499Type
Filing
Publication
The letters patent expired on 09/02/2008: 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: 07/04/1989. We update with every new RPI gazette, published weekly.
Applicants
Nalco Chemical Company
US
Inventors
D. F. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
07/04/1989
RPI 976
#2.1
04/04/1989
RPI 963
#21.1
Patente extinta em 25/10/2003
09/02/2008
RPI 1965
#16.1
03/26/1996
RPI 1321
#9.1
08/01/1995
RPI 1287
#6.1
01/17/1995
RPI 1259
#4.1
08/20/1991
RPI 1081
From the same holder
Same category
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