20.4
03/31/1987
RPI 858
The letters patent expired on 07/20/1993: 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: 03/31/1987. We update with every new RPI gazette, published weekly.
Applicants
LUCAS INDUSTRIES LTD
Inventors
L. B. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
03/31/1987
RPI 858
#16.1
02/04/1986
RPI 798
#13.1
11/12/1985
RPI 786
#9.1
07/09/1985
RPI 768
#6.1
01/10/1984
RPI 690
11/03/1981
RPI 576
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.