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Official data from INPI

PLACA DE DESLIZAMENTO PARA APARELHO DE MUDANÇA DE VIDA.

ConcedidaInvention Patent

Application data

Number

PI8002863

Type

Invention Patent

Filing

05/09/1980

Publication

12/29/1981

Progress at the INPI

  1. Filing05/09/80
  2. Publication12/29/81
  3. Examination06/22/82
  4. Allowance11/08/83
  5. Grant05/29/84
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 05/29/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cobrasma S/A Companhia do Metropolitano de São Paulo Metrô

Inventors

G. A. (pessoa física)

M. M. (pessoa física)

S. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

02/28/1984

RPI 697

Deferimento

#9.1

11/08/1983

RPI 681

Solicitação de exame técnico

#4.1

06/22/1982

RPI 609

Publicação do pedido de patente

#3.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

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