Deferimento
#9.1
10/10/1989
RPI 990
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: 10/10/1989. We update with every new RPI gazette, published weekly.
Applicants
Stone & Webster Engineering Corporation
US
Inventors
J. M. (pessoa física)
FR
R. D. (pessoa física)
US
W. L. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#9.1
10/10/1989
RPI 990
#6.1
04/11/1989
RPI 964
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06/30/1987
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Procedimento automático de reclassificação. As classificações IPC anteriores eram: C10G 11/05; B01J 29/38.
03/27/2018
RPI 2464
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Patente extinta em 20/10/98
07/01/2008
RPI 1956
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07/06/1993
RPI 1179
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