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Official data from INPI

SISTEMA DE CONTROLE E SINALIZAÇÃO DE TRAFEGO E SISTEMA MANUAL DE CONTROLE DE TRAFEGO DE BLOCO, PARA UMA FERROVIA DE VIA SINGELA, E A APARELHAGEM DA ESTAÇÃO

ConcedidaInvention Patent

Application data

Number

PI8104948

Type

Invention Patent

Filing

07/31/1981

Publication

04/20/1982

Progress at the INPI

  1. Filing07/31/81
  2. Publication04/20/82
  3. Examination03/20/84
  4. Allowance05/07/85
  5. Grant10/29/85
  6. Expired11/19/96

The letters patent expired on 11/19/1996: 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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Standard Inc

US

The Geon Company.

US

See this company's full portfolio

Inventors

J. E. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

183906 · 09/04/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Deferimento

#9.1

05/07/1985

RPI 759

Exigência - art. 36 da LPI

#6.1

10/09/1984

RPI 729

Solicitação de exame técnico

#4.1

03/20/1984

RPI 700

Publicação do pedido de patente

#3.1

04/20/1982

RPI 600

Carta-patente expirada

#21.1

11/19/1996

RPI 1355

20.10

09/19/1995

RPI 1294

Pedido de licença compulsória

#20.1

07/05/1994

RPI 1231

Pedido de licença compulsória

#20.1

05/01/1990

RPI 1016

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