20.7
06/28/1988
RPI 923
The letters patent expired on 12/07/1993: 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: 06/28/1988. We update with every new RPI gazette, published weekly.
Applicants
SUMIDEN TOKAI DO BRASIL IND EL [BR]
Inventors
I. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
06/28/1988
RPI 923
#16.1
02/04/1986
RPI 798
#13.1
11/12/1985
RPI 786
#9.1
07/09/1985
RPI 768
#6.1
11/20/1984
RPI 735
#4.1
08/31/1982
RPI 619
#3.2
07/06/1982
RPI 611
#2.1
04/06/1982
RPI 598
#21.1
12/07/1993
RPI 1201
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