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Official data from INPI

PROCESSO PARA PRODUÇÃO DE PÓ FINO DE ÓXIDO DE FERRO DE ALTA PUREZA A PARTIR DE UM MINÉRIO DE ÓXIDO DE FERRO.

Em AnáliseInvention Patent

Application data

Number

PI8505109

Type

Invention Patent

Filing

10/15/1985

Publication

07/29/1986

Progress at the INPI

  1. Filing10/15/85
  2. Publication07/29/86
  3. Examination09/23/86
  4. Allowance07/24/90
  5. Grant02/13/91
  6. Terminated06/04/96

The patent was granted on 02/13/1991 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

Sumitomo Metal Industries, LTD.

JP

See this company's full portfolio

Inventors

C. H. (pessoa física)

JP

M. W. (pessoa física)

US

T. N. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

047946/1985 · 03/11/1985

JP

173909/1985 · 08/07/1985

JP

216566/1984 · 10/16/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/23/1986

RPI 831

Publicação do pedido de patente

#3.1

07/29/1986

RPI 823

Pedido de patente depositado

#2.1

12/17/1985

RPI 791

Anuidade - prazo legal encerrado

#18.2

06/04/1996

RPI 1331

Concessão da patente

#16.1

02/13/1991

RPI 1054

Notificação para pagamento de retribuição

#13.1

11/06/1990

RPI 1040

Deferimento

#9.1

07/24/1990

RPI 1025

Exigência - art. 36 da LPI

#6.1

02/01/1990

RPI 1004

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