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Official data from INPI

PROCESSO PARA EVITAR A FORMAÇÃO DE DEPÓSITOS METÁLICOS NAS PAREDES DE RECIPIENTES METALÚRGICOS E RECIPIENTE METALÚRGICO

Em AnáliseInvention Patent

Application data

Number

PI8606635

Type

Invention Patent

Filing

04/08/1986

Publication

08/04/1987

Progress at the INPI

  1. Filing04/08/86
  2. Publication08/04/87
  3. Examination12/22/87
  4. Allowance06/01/93
  5. Grant11/30/93
  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: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Electro-Nite International N.V

BE

Inventors

O. C. (pessoa física)

BE

Technical data

IPC Classification

Priority claims

LU

85.858 · 04/19/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

14.1

10/18/1988

RPI 939

Solicitação de exame técnico

#4.1

12/22/1987

RPI 896

Notificação de entrada na fase nacional - PCT

#1.3

08/04/1987

RPI 876

Carta-patente expirada

#21.1

Patente extinta em 08/04/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

11/30/1993

RPI 1200

Notificação para pagamento de retribuição

#13.1

10/13/1993

RPI 1193

Deferimento

#9.1

06/01/1993

RPI 1174

Exigência - art. 36 da LPI

#6.1

05/26/1992

RPI 1121

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