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Official data from INPI

PROCESSO E DISPOSITIVO PARA DETERMINAÇÃO DO TEOR DE ÓXIDO DE FERRO EM SÍNTER, POR PERMEABILIDADE MAGNÉTICA

Em AnáliseInvention Patent

Application data

Number

PI8602960

Type

Invention Patent

Filing

06/26/1986

Publication

11/17/1987

Progress at the INPI

  1. Filing06/26/86
  2. Publication11/17/87
  3. Examination01/24/89
  4. Allowance11/26/91
  5. Grant05/25/93
  6. Terminated10/03/95

The patent was granted on 05/25/1993 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 01/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Paulista - COSIPA

SP, BR

See this company's full portfolio

Inventors

C. A. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

01/24/1989

RPI 953

Publicação do pedido de patente

#3.1

11/17/1987

RPI 891

Pedido de patente depositado

#2.1

04/22/1987

RPI 861

Anuidade - prazo legal encerrado

#18.2

10/03/1995

RPI 1296

Concessão da patente

#16.1

05/25/1993

RPI 1173

Notificação para pagamento de retribuição

#13.1

12/29/1992

RPI 1152

15.17

11/03/1992

RPI 1144

Retificação

#15.3

06/16/1992

RPI 1124

Deferimento

#9.1

11/26/1991

RPI 1095

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