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Official data from INPI

DISPOSITIVO PARA RESFRIAMENTO DE CABOS ISOLADOS COM ISOLANTES SOLIDO VULCANIZADO EM LINHAS CONTINUAS

ConcedidaInvention Patent

Application data

Number

PI7807434

Type

Invention Patent

Filing

11/13/1978

Publication

-

Progress at the INPI

  1. Filing11/13/78
  2. Publication
  3. Examination
  4. Allowance05/18/82
  5. Grant02/22/83
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. B. (pessoa física)

Inventors

R. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

09/08/1982

RPI 620

Deferimento

#9.1

05/18/1982

RPI 604

Exigência - art. 36 da LPI

#6.1

11/03/1981

RPI 576

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

20.4

12/29/1992

RPI 1152

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