20.4
01/13/1987
RPI 847
The patent was granted on 03/25/1986 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 01/13/1987. We update with every new RPI gazette, published weekly.
Applicants
English Clays Lovering Pochin & Company Limited
Inventors
E. D. (pessoa física)
G. R. (pessoa física)
IPC Classification
Priority claims
GB
8009098 · 03/18/1980
Publications in the Brazilian Industrial Property Gazette (RPI).
01/13/1987
RPI 847
#16.1
03/25/1986
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11/26/1985
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02/20/1985
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#15.11
11/27/1984
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05/02/1984
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08/16/1983
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#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era B01D 29/14.
03/20/2018
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08/23/1994
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