Pedido de patente depositado
#2.1
05/30/1989
RPI 971
Application data
Number
PI8901770Type
Filing
Publication
The letters patent expired on 12/15/2009: 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
Companhia de Saneamento de Minas Gerais - Copasa
MG, BR
J. C. (pessoa física)
MG, BR
Inventors
J. C. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
05/30/1989
RPI 971
#21.1
Patente extinta em 11/04/2004
12/15/2009
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03/19/1996
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04/04/1995
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03/16/1993
RPI 1163
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04/14/1992
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10/30/1990
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