Solicitação de exame técnico
#4.1
11/01/1988
RPI 941
The letters patent expired on 09/18/2001: 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: 11/01/1988. We update with every new RPI gazette, published weekly.
Applicants
Duomo-Indústria de Acrílico e fibra de vidro Ltda
PR, BR
Inventors
R. R. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
11/01/1988
RPI 941
#3.2
10/25/1988
RPI 940
#2.1
11/17/1987
RPI 891
#21.1
Patente extinta em 26/05/97 conforme disposto no artigo 24 da Lei 5772/71 (CPI).
09/18/2001
RPI 1602
#20.1
04/13/1993
RPI 1167
#16.1
02/26/1991
RPI 1056
#13.1
11/20/1990
RPI 1042
#9.1
08/07/1990
RPI 1027
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.