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Official data from INPI

APERFEICOAMENTO EM LINHAS ELETRICAS SUBMARINAS

ConcedidaInvention Patent

Application data

Number

PI7901708

Type

Invention Patent

Filing

03/21/1978

Publication

-

Progress at the INPI

  1. Filing03/21/78
  2. Publication
  3. Examination
  4. Allowance05/24/83
  5. Grant12/27/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PIRELLI

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Inventors

M. A. (pessoa física)

O. E. (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

09/27/1983

RPI 675

Deferimento

#9.1

05/24/1983

RPI 657

8.1

12/14/1982

RPI 634

Exigência - art. 36 da LPI

#6.1

07/20/1982

RPI 613

14.1

04/13/1982

RPI 599

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

20.4

11/03/1992

RPI 1144

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