6.2
05/30/1989
RPI 971
Application data
Number
PI8501401Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
Vallourec
FR
Inventors
J. J. (pessoa física)
FR
P. P. (pessoa física)
FR
Publications in the Brazilian Industrial Property Gazette (RPI).
05/30/1989
RPI 971
#4.1
02/17/1987
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11/26/1985
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06/18/1985
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Procedimento automático de reclassificação. As classificações IPC anteriores eram: B21B 37/12; B21B 31/16.
03/27/2018
RPI 2464
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Patente extinta em 27/03/2000
07/15/2008
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07/30/1991
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