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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8300546

Type

Invention Patent

Filing

02/01/1983

Publication

11/08/1983

Progress at the INPI

  1. Filing02/01/83
  2. Publication11/08/83
  3. Examination10/08/85
  4. Allowance08/23/88
  5. Grant06/27/89
  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: 06/27/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Paul Wurth S.A.

US

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Inventors

L. E. (pessoa física)

M. P. (pessoa física)

T. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/27/1989

RPI 975

Notificação para pagamento de retribuição

#13.1

12/13/1988

RPI 947

Deferimento

#9.1

08/23/1988

RPI 931

Exigência - art. 36 da LPI

#6.1

02/17/1988

RPI 904

6.2

11/18/1986

RPI 839

Solicitação de exame técnico

#4.1

10/08/1985

RPI 781

Publicação do pedido de patente

#3.1

11/08/1983

RPI 681

Pedido de patente depositado

#2.1

03/22/1983

RPI 648

Carta-patente expirada

#21.1

Patente extinta em 01/02/98

07/01/2008

RPI 1956

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