Concessão da patente
#16.1
09/01/1981
RPI 567
The letters patent expired on 11/17/1992: 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: 09/01/1981. We update with every new RPI gazette, published weekly.
Applicants
Kumiai Chemical Industry Co., Ltd.
JP
Inventors
E. B. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/01/1981
RPI 567
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 103/76; C07C 102/04; A01N 9/20.
03/27/2018
RPI 2464
#21.1
11/17/1992
RPI 1146
From the same holder
Same category
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