Concessão da patente
#16.1
06/28/1988
RPI 923
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Application data
Number
PI8301881Type
Invention Patent
Filing
04/13/1983
Publication
12/20/1983
Progress at the INPI
- Filing04/13/83
- Publication12/20/83
- Examination03/25/86
- Allowance12/08/87
- Grant06/28/88
- 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: 06/28/1988. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Northern Engineering Industries PLC, companhia britânica
GB
Inventors
C. F. (pessoa física)
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Deferimento
#9.1
12/08/1987
RPI 894
Exigência - art. 36 da LPI
#6.1
06/30/1987
RPI 871
Solicitação de exame técnico
#4.1
03/25/1986
RPI 805
Publicação do pedido de patente
#3.1
12/20/1983
RPI 687
Pedido de patente depositado
#2.1
05/31/1983
RPI 658
Carta-patente expirada
#21.1
Patente extinta em 13/04/98
07/01/2008
RPI 1956
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