20.4
11/24/1987
RPI 892
Progress at the INPI
- Filing12/23/80
- Publication08/10/82
- Examination12/21/82
- Allowance06/12/84
- Grant12/26/84
- Expired12/07/93
The letters patent expired on 12/07/1993: 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: 11/24/1987. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
No applicants.
Inventors
E. B. (pessoa física)
Technical data
IPC Classification
No IPC classification.
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Concessão da patente
#16.1
12/26/1984
RPI 740
Notificação para pagamento de retribuição
#13.1
10/02/1984
RPI 728
Deferimento
#9.1
06/12/1984
RPI 712
15.10
05/02/1984
RPI 706
Conhecimento de parecer técnico
#7.1
08/16/1983
RPI 669
Solicitação de exame técnico
#4.1
12/21/1982
RPI 635
Publicação do pedido de patente
#3.1
08/10/1982
RPI 616
Carta-patente expirada
#21.1
12/07/1993
RPI 1201
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