Concessão da patente
#16.1
03/26/1985
RPI 753
The letters patent expired on 06/21/1994: 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: 03/26/1985. We update with every new RPI gazette, published weekly.
Applicants
RUHRCHEMIE AG
RUHRKOHLE AG
Inventors
L. J. (pessoa física)
S. J. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
03/26/1985
RPI 753
#13.1
01/29/1985
RPI 745
#9.1
09/25/1984
RPI 727
#6.1
01/10/1984
RPI 690
03/16/1982
RPI 595
#21.1
06/21/1994
RPI 1229
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.