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Official data from INPI

APERFEIÇOAMENTO EM CALÇO DE ENCOSTO PARA AGULHA DE APARELHOS DE MUDANÇA DE VIDA.

ConcedidaInvention Patent

Application data

Number

PI8002864

Type

Invention Patent

Filing

05/09/1980

Publication

12/29/1981

Progress at the INPI

  1. Filing05/09/80
  2. Publication12/29/81
  3. Examination03/08/83
  4. Allowance03/27/84
  5. Grant11/27/84
  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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cobrasma S/A Companhia do Metropolitano de São Paulo Metrô

Inventors

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

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

07/17/1984

RPI 717

Deferimento

#9.1

03/27/1984

RPI 701

Exigência - art. 36 da LPI

#6.1

10/18/1983

RPI 678

Solicitação de exame técnico

#4.1

03/08/1983

RPI 646

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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