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Official data from INPI

PROCESSO DE PURIFICAÇÃO DE METAL REFRATÁRIO

Em ExigênciaInvention Patent

Application data

Number

PI8504128

Type

Invention Patent

Filing

08/28/1985

Publication

06/17/1986

Progress at the INPI

  1. Filing08/28/85
  2. Publication06/17/86
  3. Examination10/06/87
  4. Allowance06/04/91
  5. Grant04/28/92
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. I. (pessoa física)

JP

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Inventors

H. I. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

180151/84 · 08/29/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

05/30/1989

RPI 971

Solicitação de exame técnico

#4.1

10/06/1987

RPI 885

Publicação do pedido de patente

#3.1

06/17/1986

RPI 817

Pedido de patente depositado

#2.1

10/29/1985

RPI 784

Carta-patente expirada

#21.1

Patente extinta em 28/08/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

10/01/1991

RPI 1087

Deferimento

#9.1

06/04/1991

RPI 1070

Exigência - art. 36 da LPI

#6.1

12/04/1990

RPI 1044

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