01/21/1987
RPI 848
Solicitação de exame técnico
4.1
Invention PatentPI8506531
Itelpa Industria e Comercio Ltda.+1
The letters patent expired on 07/15/2008: 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: 01/21/1987. We update with every new RPI gazette, published weekly.
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
01/21/1987
RPI 848
4.1
10/29/1986
RPI 836
3.2
03/25/1986
RPI 805
2.1
07/15/2008
RPI 1958
21.1
Patente extinta em 13/12/2000
07/16/1996
RPI 1337
07/09/1996
RPI 1336
20.1
10/27/1992
RPI 1143
16.1
04/07/1992
RPI 1114
13.1
11/19/1991
RPI 1094
9.1