Concessão da patente
#16.1
10/29/1985
RPI 784
The letters patent expired on 05/03/1994: 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: 10/29/1985. We update with every new RPI gazette, published weekly.
Applicants
ENGELHARD MIN & CHEM
Inventors
K. C. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
10/29/1985
RPI 784
#13.1
07/02/1985
RPI 767
#9.2
03/05/1985
RPI 750
#6.1
02/07/1984
RPI 694
11/30/1982
RPI 632
10/05/1982
RPI 624
11/17/1981
RPI 578
#21.1
05/03/1994
RPI 1222
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.