Solicitação de exame técnico
#4.1
10/20/1987
RPI 887
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Official data from INPI
PROCESSO DE PURIFICAÇÃO DE BIOGÁS E CORRESPONDENTE EQUIPAMENTO
Em AnáliseInvention Patent
Application data
Number
PI8503745Type
Invention Patent
Filing
08/05/1985
Publication
03/17/1987
Progress at the INPI
- Filing08/05/85
- Publication03/17/87
- Examination10/20/87
- Allowance09/13/94
- Grant05/30/95
- 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: 10/20/1987. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Eniplan Indústria e Planejamento Ltda
SP, BR
Inventors
A. C. (pessoa física)
BR
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Publicação do pedido de patente
#3.1
03/17/1987
RPI 856
Pedido de patente depositado
#2.1
10/08/1985
RPI 781
Carta-patente expirada
#21.1
Patente extinta em 05/08/2000
07/15/2008
RPI 1958
Concessão da patente
#16.1
05/30/1995
RPI 1278
Notificação para pagamento de retribuição
#13.1
01/17/1995
RPI 1259
Deferimento
#9.1
09/13/1994
RPI 1241
Exigência - art. 36 da LPI
#6.1
03/02/1993
RPI 1161
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