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Official data from INPI

APARELHO TRANSFORMADOR DE CORRENTE ELETRONICO PARA MEDIR A CORRENTE DE LINHA DE UMA LINHA DE TRANSMISSAO DE ALTA TENSAO

Em AnáliseInvention Patent

Application data

Number

PI7807009

Type

Invention Patent

Filing

10/25/1977

Publication

-

Progress at the INPI

  1. Filing10/25/77
  2. Publication
  3. Examination
  4. Allowance03/09/82
  5. Grant
  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: 06/29/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

G. E. (pessoa física)

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

06/29/1982

RPI 610

Deferimento

#9.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

18.8

01/02/1991

RPI 1048

Anuidade - prazo legal encerrado

#18.2

09/18/1990

RPI 1033

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