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Official data from INPI

APERFEICOAMENTOS EM DESVIO FERROVIARIO

Em AnáliseInvention Patent

Application data

Number

PI7901854

Type

Invention Patent

Filing

03/26/1979

Publication

-

Progress at the INPI

  1. Filing03/26/79
  2. Publication
  3. Examination12/14/82
  4. Allowance04/03/84
  5. Grant11/27/84
  6. Terminated05/17/88

The patent was granted on 11/27/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PREMESA S A IND E COMERCIO

Inventors

M. B. (pessoa física)

M. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

08/07/1984

RPI 720

Deferimento

#9.1

04/03/1984

RPI 702

Exigência - art. 36 da LPI

#6.1

11/01/1983

RPI 680

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

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