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

PROCESSO PARA REDUCAO DIRETA DE MATERIAIS COM TEOR DE OXIDO DE FERRO EM UM FORNO ROTATIVO

ConcedidaInvention Patent

Application data

Number

PI8100329

Type

Invention Patent

Filing

01/23/1980

Publication

-

Progress at the INPI

  1. Filing01/23/80
  2. Publication
  3. Examination08/16/83
  4. Allowance07/14/87
  5. Grant11/24/87
  6. Terminated08/23/94

The patent was granted on 11/24/1987 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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

METALLGESELLSCHAFT AG

See this company's full portfolio

Inventors

E. G. (pessoa física)

S. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

11/25/1986

RPI 840

Conhecimento de parecer técnico

#7.1

10/22/1985

RPI 783

Exigência - art. 36 da LPI

#6.1

09/04/1984

RPI 724

Solicitação de exame técnico

#4.1

08/16/1983

RPI 669

Anuidade - prazo legal encerrado

#18.2

08/23/1994

RPI 1238

Patent monitoring

Track this patent in real time.

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