Solicitação de exame técnico
#4.1
10/14/1986
RPI 834
Back to search
Official data from INPI
PROCESSO CONTÍNUO PARA A PREPARAÇÃO DE ÁCIDO FOSFÓRICO E SULFATO DE CÁLCIO
Em AnáliseInvention Patent
Application data
Number
PI8505501Type
Invention Patent
Filing
11/04/1985
Publication
08/05/1986
Progress at the INPI
- Filing11/04/85
- Publication08/05/86
- Examination10/14/86
- Allowance02/16/93
- Grant06/29/93
- Expired07/15/08
The letters patent expired on 07/15/2008: 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: 10/14/1986. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Prayon Développement, Société Anonyme
BE
Inventors
A. D. (pessoa física)
BE
F. T. (pessoa física)
BE
Technical data
IPC Classification
Priority claims
LU
85628 · 11/05/1984
LU
85906 · 05/21/1985
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Publicação do pedido de patente
#3.1
08/05/1986
RPI 824
Pedido de patente depositado
#2.1
01/14/1986
RPI 795
Carta-patente expirada
#21.1
Patente extinta em 04/11/2000
07/15/2008
RPI 1958
Concessão da patente
#16.1
06/29/1993
RPI 1178
Deferimento
#9.1
02/16/1993
RPI 1159
Exigência - art. 36 da LPI
#6.1
02/25/1992
RPI 1108
Exigência - art. 36 da LPI
#6.1
09/03/1991
RPI 1083
Exigência - art. 36 da LPI
#6.1
03/26/1991
RPI 1060
Exigência - art. 36 da LPI
#6.1
10/02/1990
RPI 1035
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.