Concessão da patente
#16.1
12/29/1987
RPI 897
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Official data from INPI
PROCESSO E DISPOSITIVO PARA REDUZIR MATERIAIS QUE CONTEM OXIDO DE FERRO
ConcedidaInvention Patent
Progress at the INPI
- Filing03/24/80
- Publication
- Examination01/19/82
- Allowance07/14/87
- Grant12/29/87
- Terminated08/23/94
The patent was granted on 12/29/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 12/29/1987. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
DIRECT REDUCTION CORP
Inventors
B. A. (pessoa física)
K. V. (pessoa física)
Technical data
IPC Classification
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação para pagamento de retribuição
#13.1
11/10/1987
RPI 890
Deferimento
#9.1
07/14/1987
RPI 873
Exigência - art. 36 da LPI
#6.1
10/21/1986
RPI 835
Conhecimento de parecer técnico
#7.1
03/11/1986
RPI 803
Conhecimento de parecer técnico
#7.1
07/17/1984
RPI 717
14.1
05/02/1984
RPI 706
Solicitação de exame técnico
#4.1
01/19/1982
RPI 587
Anuidade - prazo legal encerrado
#18.2
08/23/1994
RPI 1238
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