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Official data from INPI

APERFEIÇOAMENTO EM TENAZES

Em AnáliseInvention Patent

Application data

Number

PI8501961

Type

Invention Patent

Filing

04/25/1985

Publication

09/01/1987

Progress at the INPI

  1. Filing04/25/85
  2. Publication09/01/87
  3. Examination05/09/89
  4. Allowance02/13/90
  5. Grant09/25/90
  6. Terminated05/21/96

The patent was granted on 09/25/1990 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: 05/09/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Usinas Siderúrgicas de Minas Gerais S/A -USIMINAS (Grupo Siderbras)

MG, BR

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Inventors

N. S. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/09/1989

RPI 968

4.2.1

01/31/1989

RPI 954

Solicitação de exame não realizada

#4.2

08/09/1988

RPI 929

Publicação do pedido de patente

#3.1

09/01/1987

RPI 880

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

Anuidade - prazo legal encerrado

#18.2

05/21/1996

RPI 1329

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

06/05/1990

RPI 1021

Deferimento

#9.1

02/13/1990

RPI 1006

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