Concessão da patente
#16.1
10/24/1989
RPI 992
Back to search
Official data from INPI
PROCESSO CONTÍNUO DE PREPARAÇÃO DE ÁCIDO FOSFÓRICO E DE SULFATO DE CÁLCIO
ConcedidaInvention Patent
Application data
Number
PI8407074Type
Invention Patent
Filing
03/13/1984
Publication
08/27/1985
Progress at the INPI
- Filing03/13/84
- Publication08/27/85
- Examination06/16/87
- Allowance05/16/89
- Grant10/24/89
- 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: 10/24/1989. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Prayon Développement, Société Anonyme
BE
Inventors
A. D. (pessoa física)
BE
A. D. (pessoa física)
BE
A. T. (pessoa física)
BE
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação para pagamento de retribuição
#13.1
09/12/1989
RPI 986
Deferimento
#9.1
05/16/1989
RPI 969
Exigência - art. 36 da LPI
#6.1
11/01/1988
RPI 941
Solicitação de exame técnico
#4.1
06/16/1987
RPI 869
Notificação de entrada na fase nacional - PCT
#1.3
08/27/1985
RPI 775
Carta-patente expirada
#21.1
Patente extinta em 13/03/99
07/08/2008
RPI 1957
Related
From the same holder
Same category
Patent monitoring
Track this patent in real time.
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.