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Official data from INPI

PROCESSO PARA A RETICULACAO CONTINUA DE UM REVESTIMENTO ISOLANTE POLIOLEFINICO DE CABOS ELETRICOS PARA MEDIAS E ALTAS TENSOES

ConcedidaInvention Patent

Application data

Number

PI7804308

Type

Invention Patent

Filing

07/13/1977

Publication

-

Progress at the INPI

  1. Filing07/13/77
  2. Publication
  3. Examination
  4. Allowance07/26/83
  5. Grant03/27/84
  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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PIRELLI

See this company's full portfolio

Inventors

S. A. (pessoa física)

V. B. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

11/22/1983

RPI 683

Deferimento

#9.1

07/26/1983

RPI 666

8.1

03/22/1983

RPI 648

14.1

04/13/1982

RPI 599

6.2

10/06/1981

RPI 572

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

20.4

08/04/1992

RPI 1131

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