Solicitação de exame técnico
#4.1
05/16/1989
RPI 969
The letters patent expired on 09/25/2001: 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: 05/16/1989. We update with every new RPI gazette, published weekly.
Applicants
Unitec Transmissões, Equipamentos e Sinterização Ltda.
SP, BR
Inventors
J. B. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/16/1989
RPI 969
#3.2
10/04/1988
RPI 937
#2.1
09/27/1988
RPI 936
#21.1
Patente extinta em 01/06/98 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).
09/25/2001
RPI 1603
#16.1
08/31/1993
RPI 1187
#13.1
04/27/1993
RPI 1169
#9.1
01/05/1993
RPI 1153
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Same category
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