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Official data from INPI

DISPOSITIVO APROPRIADO PARA EMPREGO EM UMA VIA PERMANENTE FERROVIÁRIA PARA ISOLAR ELETRICAMENTE UM TRILHO FERROVIÁRIO ASSENTADO SOBRE FLANGES, A PARTIR DE UM GRAMPO DE TRILHO

ConcedidaInvention Patent

Application data

Number

PI8300743

Type

Invention Patent

Filing

02/11/1983

Publication

11/16/1983

Progress at the INPI

  1. Filing02/11/83
  2. Publication11/16/83
  3. Examination02/28/84
  4. Allowance03/25/86
  5. Grant09/30/86
  6. Terminated12/17/96

The patent was granted on 09/30/1986 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pandrol Limited

GB

See this company's full portfolio

Inventors

B. P. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8204364 · 02/15/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/15/1986

RPI 821

Deferimento

#9.1

03/25/1986

RPI 805

Conhecimento de parecer técnico

#7.1

08/20/1985

RPI 774

6.2

03/19/1985

RPI 752

Solicitação de exame técnico

#4.1

02/28/1984

RPI 697

Publicação do pedido de patente

#3.1

11/16/1983

RPI 682

Pedido de patente depositado

#2.1

03/29/1983

RPI 649

Anuidade - prazo legal encerrado

#18.2

12/17/1996

RPI 1359

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