Solicitação de exame técnico
#4.1
12/06/1988
RPI 946
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: 12/06/1988. We update with every new RPI gazette, published weekly.
Applicants
C. A. Friedrich & Cia. Ltda.
RS, BR
Celsus Metalúrgica Limitada
RS, BR
Inventors
J. S. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
12/06/1988
RPI 946
#3.2
09/20/1988
RPI 935
#2.1
09/13/1988
RPI 934
#21.1
Patente extinta em 10/06/98 conforme o disposto no artigo 24 da Lei 5772/71 (CPI).
09/25/2001
RPI 1603
#25.4
12/23/1997
RPI 1409
#16.1
11/24/1992
RPI 1147
#13.1
07/28/1992
RPI 1130
#9.1
03/03/1992
RPI 1109
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.