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Official data from INPI

APEFEIÇOAMENTO EM VAGÃO FERROVIÁRIO PARA TRANSPORTE DE CHAPAS EXTRA-LARGAS

ConcedidaInvention Patent

Application data

Number

PI8300693

Type

Invention Patent

Filing

02/10/1983

Publication

09/18/1984

Progress at the INPI

  1. Filing02/10/83
  2. Publication09/18/84
  3. Examination07/15/86
  4. Allowance06/09/87
  5. Grant12/29/87
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. C. (pessoa física)

SP, BR

Companhia Siderúrgica Paulista - COSIPA

SP, BR

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Inventors

P. L. (pessoa física)

S. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

09/29/1987

RPI 884

Deferimento

#9.1

06/09/1987

RPI 868

Solicitação de exame técnico

#4.1

07/15/1986

RPI 821

Publicação do pedido de patente

#3.1

09/18/1984

RPI 726

Pedido de patente depositado

#2.1

03/29/1983

RPI 649

Carta-patente expirada

#21.1

Patente extinta em 10/02/98

07/01/2008

RPI 1956

20.7

10/25/1994

RPI 1247

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