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Official data from INPI

DISPOSITIVO DE CONTROLE DA FORMA DA ZONA FUNDIDA EM FORNOS DE FUSÃO ZONAL FLUTUANTE.

ConcedidaInvention Patent

Application data

Number

PI8006888

Type

Invention Patent

Filing

10/27/1980

Publication

07/06/1982

Progress at the INPI

  1. Filing10/27/80
  2. Publication07/06/82
  3. Examination09/21/82
  4. Allowance11/01/83
  5. Grant04/24/84
  6. Expired11/14/95

The letters patent expired on 11/14/1995: 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: 04/24/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Telecomunicações Brasileiras S/A - Telebrás

SP, BR

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Inventors

B. C. (pessoa física)

M. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

02/14/1984

RPI 695

Deferimento

#9.1

11/01/1983

RPI 680

Exigência - art. 36 da LPI

#6.1

05/03/1983

RPI 654

Solicitação de exame técnico

#4.1

09/21/1982

RPI 622

Publicação do pedido de patente

#3.1

07/06/1982

RPI 611

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

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