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Official data from INPI

SUPORTE ISOLANTE COM RESISTENCIA PARA AQUECEDOR

ConcedidaUtility Model

Application data

Number

MU5801482

Type

Utility Model

Filing

10/18/1978

Publication

-

Progress at the INPI

  1. Filing10/18/78
  2. Publication
  3. Examination06/01/82
  4. Allowance03/29/83
  5. Grant11/29/83
  6. Expired12/07/93

The letters patent expired on 12/07/1993: 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: 11/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CARDAL ELETRO METALURG LTD

Inventors

C. J. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

08/02/1983

RPI 667

Deferimento

#9.1

03/29/1983

RPI 649

Solicitação de exame técnico

#4.1

06/01/1982

RPI 606

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

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