Concessão da patente
#16.1
11/29/1988
RPI 945
The letters patent expired on 05/31/1994: 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: 11/29/1988. We update with every new RPI gazette, published weekly.
Applicants
SUMITOMO CHEMICAL CO
Inventors
A. K. (pessoa física)
M. (pessoa física)
S. Y. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/29/1988
RPI 945
#13.1
09/06/1988
RPI 933
#15.11
08/02/1988
RPI 928
#9.1
05/17/1988
RPI 917
#6.1
10/20/1987
RPI 887
#6.1
04/24/1984
RPI 705
#6.1
11/01/1983
RPI 680
05/04/1982
RPI 602
#21.1
05/31/1994
RPI 1226
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.