Cessão de direito de exploração
#22.1
05/06/1986
RPI 811
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: 05/06/1986. We update with every new RPI gazette, published weekly.
Applicants
SUMITOMO CHEMICAL CO
Inventors
H. C. (pessoa física)
O. Y. (pessoa física)
Y. T. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#22.1
05/06/1986
RPI 811
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09/27/1983
RPI 675
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09/06/1983
RPI 672
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04/19/1983
RPI 652
#6.1
09/14/1982
RPI 621
12/29/1981
RPI 584
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
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