Concessão da patente
#16.1
05/30/1989
RPI 971
The letters patent expired on 09/21/1993: 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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
DU PONT
Inventors
E. D. (pessoa física)
R. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
05/30/1989
RPI 971
#13.1
04/25/1989
RPI 966
#9.1
11/22/1988
RPI 944
#6.1
03/29/1988
RPI 910
#7.1
02/07/1984
RPI 694
#21.1
09/21/1993
RPI 1190
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.