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Official data from INPI

PROCESSO PARA AUMENTAR A VIDA ÚTIL DE UM ELETRODO DE SOLDAGEM

Em AnáliseInvention Patent

Application data

Number

PI8605609

Type

Invention Patent

Filing

11/13/1986

Publication

08/18/1987

Progress at the INPI

  1. Filing11/13/86
  2. Publication08/18/87
  3. Examination11/07/89
  4. Allowance06/14/94
  5. Grant01/31/95
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan Alumínio do Brasil S/A

SP, BR

Alcan International Limited

CA

See this company's full portfolio

Inventors

M. P. (pessoa física)

GB

N. D. (pessoa física)

GB

P. B. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8528049 · 11/14/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/07/1989

RPI 994

Publicação do pedido de patente

#3.1

08/18/1987

RPI 878

Pedido de patente depositado

#2.1

04/14/1987

RPI 860

Carta-patente expirada

#21.1

Patente extinta em 13/11/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

01/31/1995

RPI 1261

Notificação para pagamento de retribuição

#13.1

10/18/1994

RPI 1246

Deferimento

#9.1

06/14/1994

RPI 1228

Exigência - art. 36 da LPI

#6.1

09/28/1993

RPI 1191

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