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Official data from INPI

SEPARADOR DE FASES COM CIRCUITO DE TRAVA

ConcedidaInvention Patent

Application data

Number

PI8404041

Type

Invention Patent

Filing

08/17/1983

Publication

09/03/1985

Progress at the INPI

  1. Filing08/17/83
  2. Publication09/03/85
  3. Examination08/11/87
  4. Allowance07/12/88
  5. Grant03/28/89
  6. Terminated06/20/95

The patent was granted on 03/28/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM [US]

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Inventors

B. R. (pessoa física)

K. J. (pessoa física)

K. E. (pessoa física)

W. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/28/1989

RPI 962

Notificação para pagamento de retribuição

#13.1

11/16/1988

RPI 943

Deferimento

#9.1

07/12/1988

RPI 925

Solicitação de exame técnico

#4.1

08/11/1987

RPI 877

Publicação do pedido de patente

#3.1

09/03/1985

RPI 776

Pedido de patente depositado

#2.1

10/16/1984

RPI 730

Anuidade - prazo legal encerrado

#18.2

06/20/1995

RPI 1281

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