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Official data from INPI

SISTEMA PORTA-ELETRODO PARA FORNOS DE FUNDIÇÃO ELETROTÉRMICA.

ConcedidaInvention Patent
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Application data

Number

PI8306585

Type

Invention Patent

Filing

11/30/1983

Publication

07/10/1984
View on INPI

Progress at the INPI

  1. Filing11/30/83
  2. Publication07/10/84
  3. Examination11/20/84
  4. Allowance12/16/86
  5. Grant07/28/87
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Elkem S/A.

NO

Inventors

E. K. (pessoa física)

Technical data

IPC Classification

F27D 11/10H05B 7/102

Priority claims

NO

824055 · 12/03/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/28/1987

RPI 875

Notificação para pagamento de retribuição

#13.1

05/05/1987

RPI 863

Deferimento

#9.1

12/16/1986

RPI 843

Republicação - classificação IPC

#15.11

04/01/1986

RPI 806

Exigência - art. 36 da LPI

#6.1

03/25/1986

RPI 805

Exigência - art. 36 da LPI

#6.1

03/11/1986

RPI 803

Solicitação de exame técnico

#4.1

11/20/1984

RPI 735

Publicação do pedido de patente

#3.1

07/10/1984

RPI 716

Pedido de patente depositado

#2.1

02/14/1984

RPI 695

Carta-patente expirada

#21.1

Patente extinta em 30/11/98

07/01/2008

RPI 1956

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