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Official data from INPI

PAREDE LATERAL PARA FORNO DE FUNDIÇÃO METALÚRGICA

DeferidaInvention Patent

Application data

Number

PI8600403

Type

Invention Patent

Filing

01/31/1986

Publication

10/14/1986

Progress at the INPI

  1. Filing01/31/86
  2. Publication10/14/86
  3. Examination02/03/87
  4. Allowance11/28/89
  5. Grant06/26/90
  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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Elkem a/s

NO

See this company's full portfolio

Inventors

J. A. (pessoa física)

NO

P. N. (pessoa física)

NO

Technical data

IPC Classification

Priority claims

NO

850460 · 02/07/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

11/28/1989

RPI 997

Exigência - art. 36 da LPI

#6.1

03/21/1989

RPI 961

Solicitação de exame técnico

#4.1

02/03/1987

RPI 850

Publicação do pedido de patente

#3.1

10/14/1986

RPI 834

Pedido de patente depositado

#2.1

07/22/1986

RPI 822

Carta-patente expirada

#21.1

Patente extinta em 31/01/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

04/03/1990

RPI 1012

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