20.4
08/15/1989
RPI 982
Application data
Number
PI8300129Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 08/15/1989. We update with every new RPI gazette, published weekly.
Applicants
Babcock & Wilcox Fibras Cerâmicas Ltda
Inventors
R. M. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/15/1989
RPI 982
08/15/1989
RPI 982
#16.1
10/29/1985
RPI 784
#13.1
07/30/1985
RPI 771
#9.1
04/09/1985
RPI 755
#4.1
11/29/1983
RPI 684
#3.2
06/14/1983
RPI 660
#2.1
03/01/1983
RPI 645
#21.1
Patente extinta em 13/01/98
07/01/2008
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03/30/1993
RPI 1165
10/22/1991
RPI 1090
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