20.4
01/19/1988
RPI 900
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: 01/19/1988. We update with every new RPI gazette, published weekly.
Applicants
YOKOGAWA ELECTRIC WORKS LTD
Inventors
A. H. (pessoa física)
F. H. (pessoa física)
S. S. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
01/19/1988
RPI 900
#16.1
02/28/1984
RPI 697
11/01/1983
RPI 680
#13.1
07/05/1983
RPI 663
06/28/1983
RPI 662
06/07/1983
RPI 659
#11.4
12/28/1982
RPI 636
#9.1
11/03/1981
RPI 576
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
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