Concessão da patente
#16.1
06/24/1986
RPI 818
The letters patent expired on 04/18/1995: 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: 06/24/1986. We update with every new RPI gazette, published weekly.
Applicants
HITACHI CHEMICAL CO LTD
Inventors
S. A. (pessoa física)
Y. Y. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/24/1986
RPI 818
#13.1
04/22/1986
RPI 809
#9.1
12/17/1985
RPI 791
#6.1
01/15/1985
RPI 743
04/06/1982
RPI 598
#21.1
04/18/1995
RPI 1272
From the same holder
Same category
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