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Official data from INPI

RELÉ DE FASE PARA PROTEÇÃO DE LINHA DE TRANSMISSÃO DE ENERGIA DE C.A

ConcedidaInvention Patent

Application data

Number

PI8307745

Type

Invention Patent

Filing

08/08/1983

Publication

07/02/1985

Progress at the INPI

  1. Filing08/08/83
  2. Publication07/02/85
  3. Examination06/16/87
  4. Allowance10/04/88
  5. Grant09/26/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

See this company's full portfolio

Inventors

S. A. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

01/24/1989

RPI 953

Deferimento

#9.1

10/04/1988

RPI 937

Exigência - art. 36 da LPI

#6.1

04/12/1988

RPI 912

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Notificação de entrada na fase nacional - PCT

#1.3

07/02/1985

RPI 767

Carta-patente expirada

#21.1

Patente extinta em 08/08/98

07/01/2008

RPI 1956

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