Concessão da patente
#16.1
05/28/1985
RPI 762
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Official data from INPI
PROCESSO PARA REDUCAO DE MINERIOS CONTENDO OXIDOS DE FERRO;METODO PARA CONTROLE DE FORMACAO DE SINTER EM UM FORNO-ROTATIVO;SISTEMA PARA REDUZIR DIRETAMENTE MINERIO CONTENDO OXIDO DE FERRO
ConcedidaInvention Patent
Application data
Number
PI8101002Type
Invention Patent
Filing
03/20/1980
Publication
10/06/1981
Progress at the INPI
- Filing03/20/80
- Publication10/06/81
- Examination01/26/82
- Allowance10/23/84
- Grant05/28/85
- Terminated08/23/94
The patent was granted on 05/28/1985 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: 05/28/1985. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
DIRECT REDUCTION CORP [US]
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
03/05/1985
RPI 750
Republicação - classificação IPC
#15.11
12/18/1984
RPI 739
Deferimento
#9.1
10/23/1984
RPI 731
14.1
05/02/1984
RPI 706
Solicitação de exame técnico
#4.1
01/26/1982
RPI 588
Publicação do pedido de patente
#3.1
10/06/1981
RPI 572
Anuidade - prazo legal encerrado
#18.2
08/23/1994
RPI 1238
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