Concessão da patente
#16.1
07/25/1989
RPI 979
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Official data from INPI
BENEFICIAMENTO DE ARGILAS POR FLOTAÇÃO COM ESPUMA.
ConcedidaInvention Patent
Application data
Number
PI8307515Type
Invention Patent
Filing
09/08/1983
Publication
08/14/1984
Progress at the INPI
- Filing09/08/83
- Publication08/14/84
- Examination06/17/86
- Allowance09/06/88
- Grant07/25/89
- Expired07/01/08
The letters patent expired on 07/01/2008: 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: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
A. C. (pessoa física)
US
Inventors
A. M. (pessoa física)
B. B. (pessoa física)
Technical data
IPC Classification
No IPC classification.
Priority claims
US
417.663 · 09/13/1982
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação para pagamento de retribuição
#13.1
12/27/1988
RPI 949
Deferimento
#9.1
09/06/1988
RPI 933
Exigência - art. 36 da LPI
#6.1
04/05/1988
RPI 911
Conhecimento de parecer técnico
#7.1
09/29/1987
RPI 884
Solicitação de exame técnico
#4.1
06/17/1986
RPI 817
Notificação de entrada na fase nacional - PCT
#1.3
08/14/1984
RPI 721
Carta-patente expirada
#21.1
Patente extinta em 08/09/98
07/01/2008
RPI 1956
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