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Official data from INPI

MÁQUINA PARA RETÍFICA DOS SELOS DE PORTA DE FORNO DE COQUE

Em AnáliseInvention Patent

Application data

Number

PI8804153

Type

Invention Patent

Filing

08/17/1988

Publication

01/03/1989

Progress at the INPI

  1. Filing08/17/88
  2. Publication01/03/89
  3. Examination10/17/89
  4. Allowance01/30/96
  5. Grant11/26/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica de Tubarão - Grupo Siderbrás

ES, BR

See this company's full portfolio

Inventors

O. M. (pessoa física)

BR

R. T. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/17/1989

RPI 991

Publicação antecipada

#3.2

01/03/1989

RPI 950

Pedido de patente depositado

#2.1

12/27/1988

RPI 949

Carta-patente expirada

#21.1

Patente extinta em 17/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

11/26/1996

RPI 1356

Notificação para pagamento de retribuição

#13.1

07/09/1996

RPI 1336

Deferimento

#9.1

01/30/1996

RPI 1313

15.18

08/02/1994

RPI 1235

Retificação

#15.3

06/07/1994

RPI 1227

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