16.3
09/25/1984
RPI 727
The letters patent expired on 04/04/1995: 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: 09/25/1984. We update with every new RPI gazette, published weekly.
Applicants
RUHRKOHLE AG
Inventors
L. J. (pessoa física)
S. J. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/25/1984
RPI 727
#15.11
05/02/1984
RPI 706
#16.1
04/24/1984
RPI 705
#13.1
02/14/1984
RPI 695
#15.11
02/07/1984
RPI 694
#9.1
11/01/1983
RPI 680
#6.1
02/01/1983
RPI 641
#21.1
04/04/1995
RPI 1270
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.