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Official data from INPI

PLACA MOLDADA DE EFEITO TRIPLICE,PARA LINGOTAMENTO CONVENCIONAL DE ACO,PELO METODO INDIRETO OU EM FONTE

ConcedidaInvention Patent

Application data

Number

PI7804663

Type

Invention Patent

Filing

07/19/1978

Publication

-

Progress at the INPI

  1. Filing07/19/78
  2. Publication
  3. Examination
  4. Allowance07/05/83
  5. Grant12/27/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

REFRATARIOS & ISOLANTES SA

Inventors

A. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

11/08/1983

RPI 681

Deferimento

#9.1

07/05/1983

RPI 663

Exigência - art. 36 da LPI

#6.1

08/31/1982

RPI 619

Conhecimento de parecer técnico

#7.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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