20.7
07/04/1989
RPI 976
The letters patent expired on 11/15/1994: 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: 07/04/1989. We update with every new RPI gazette, published weekly.
Applicants
Filtros Irlemp Racor Indústria e Comércio Ltda
SP, BR
Inventors
B. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/04/1989
RPI 976
06/06/1989
RPI 972
#16.1
10/29/1986
RPI 836
#13.1
07/08/1986
RPI 820
03/18/1986
RPI 804
#12.1
08/06/1985
RPI 772
#9.1
04/16/1985
RPI 756
#5.1
07/31/1984
RPI 719
#4.1
03/07/1984
RPI 698
#3.1
01/03/1984
RPI 689
#2.1
07/13/1982
RPI 612
#21.1
11/15/1994
RPI 1250
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.