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Official data from INPI

PROCESSO PARA A ALIMENTAÇÃO DE ENERGIA MAJORADA EM FORNOS DE ARCO VOLTÁICO

Em AnáliseInvention Patent

Application data

Number

PI8704396

Type

Invention Patent

Filing

08/27/1987

Publication

04/19/1988

Progress at the INPI

  1. Filing08/27/87
  2. Publication04/19/88
  3. Examination10/18/88
  4. Allowance01/02/91
  5. Grant07/30/91
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kloeckner CRA Patent Gmbh

DE

Inventors

D. B. (pessoa física)

DE

E. F. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 36 29 055.6 · 08/27/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/18/1988

RPI 939

Publicação do pedido de patente

#3.1

04/19/1988

RPI 913

Pedido de patente depositado

#2.1

11/17/1987

RPI 891

Carta-patente expirada

#21.1

Patente extinta em 27/08/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

07/30/1991

RPI 1078

Notificação para pagamento de retribuição

#13.1

04/16/1991

RPI 1063

Deferimento

#9.1

01/02/1991

RPI 1048

14.1

06/19/1990

RPI 1023

Exigência - art. 36 da LPI

#6.1

03/13/1990

RPI 1009

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