Solicitação de exame técnico
#4.1
06/30/1987
RPI 871
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Official data from INPI
FLUÍDO HIDRÁULICO À BASE DE ÁGUA, E, CONCENTRADO PARA FORMÁ-LO
Em AnáliseInvention Patent
Application data
Number
PI8406955Type
Invention Patent
Filing
06/08/1984
Publication
06/04/1985
Progress at the INPI
- Filing06/08/84
- Publication06/04/85
- Examination06/30/87
- Allowance05/26/92
- Grant12/29/92
- Expired07/08/08
The letters patent expired on 07/08/2008: 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: 06/30/1987. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
E.F. Houghton & Co.
US
Inventors
R. H. (pessoa física)
US
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação de entrada na fase nacional - PCT
#1.3
06/04/1985
RPI 763
Carta-patente expirada
#21.1
Patente extinta em 08/06/99
07/08/2008
RPI 1957
Concessão da patente
#16.1
12/29/1992
RPI 1152
Notificação para pagamento de retribuição
#13.1
10/20/1992
RPI 1142
Deferimento
#9.1
05/26/1992
RPI 1121
Exigência - art. 36 da LPI
#6.1
04/02/1991
RPI 1061
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