Concessão da patente
#16.1
07/27/1982
RPI 614
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: 07/27/1982. We update with every new RPI gazette, published weekly.
Applicants
S. I. (pessoa física)
Inventors
M. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
07/27/1982
RPI 614
#13.1
12/29/1981
RPI 584
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C09K 7/04; C04B 7/00.
03/27/2018
RPI 2464
#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.