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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8405770

Type

Invention Patent

Filing

11/07/1984

Publication

09/17/1985

Progress at the INPI

  1. Filing11/07/84
  2. Publication09/17/85
  3. Examination08/25/87
  4. Allowance04/12/88
  5. Grant11/29/88
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 11/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Paul Wurth S/A

LU

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Inventors

C. G. (pessoa física)

L. E. (pessoa física)

M. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1988

RPI 945

Notificação para pagamento de retribuição

#13.1

07/26/1988

RPI 927

Deferimento

#9.1

04/12/1988

RPI 912

Solicitação de exame técnico

#4.1

08/25/1987

RPI 879

Publicação do pedido de patente

#3.1

09/17/1985

RPI 778

Pedido de patente depositado

#2.1

01/29/1985

RPI 745

Carta-patente expirada

#21.1

Patente extinta em 07/11/99

07/08/2008

RPI 1957

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