Carta-patente expirada
#21.1
Patente extinta em 23/01/2000
07/01/2008
RPI 1956
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: 07/01/2008. We update with every new RPI gazette, published weekly.
Applicants
Hey'Di do Brasil Impermeabilizações Ltda
SP, BR
Inventors
C. K. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 23/01/2000
07/01/2008
RPI 1956
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