(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA REDUCAO DIRETA DE OXIDO DE FERRO PARA FERRO METALICO; APARELHO PARA REDUCAO DIRETA DE OXIDO DE FERRO PRODUCAO DE GA SCOMBUSTIVEL

Em AnáliseInvention Patent

Application data

Number

PI8105761

Type

Invention Patent

Filing

09/15/1980

Publication

05/25/1982

Progress at the INPI

  1. Filing09/15/80
  2. Publication05/25/82
  3. Examination07/10/84
  4. Allowance07/09/85
  5. Grant12/31/85
  6. Terminated08/07/90

The patent was granted on 12/31/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/23/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MIDREX CORP

See this company's full portfolio

Inventors

S. C. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

09/23/1986

RPI 831

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

12/18/1984

RPI 739

Solicitação de exame técnico

#4.1

07/10/1984

RPI 716

Publicação do pedido de patente

#3.1

05/25/1982

RPI 605

Pedido de patente depositado

#2.1

10/20/1981

RPI 574

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.