10/27/1987
RPI 888
Concessão da patente
16.1
Invention PatentPI8202433
Construmat Engenharia e Comércio Ltda.
The patent was granted on 10/27/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 10/27/1987. We update with every new RPI gazette, published weekly.
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
10/27/1987
RPI 888
16.1
08/11/1987
RPI 877
13.1
03/31/1987
RPI 858
9.1
06/10/1986
RPI 816
6.1
04/09/1985
RPI 755
7.1
01/10/1984
RPI 690
5.1
08/23/1983
RPI 670
4.1
04/05/1983
RPI 650
3.2
06/15/1982
RPI 608
2.1
06/26/1990
RPI 1024
18.2