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Official data from INPI

DISPOSITIVO DE FECHAMENTO DE UMA ABERTURA CENTRAL SUPERIOR DE UM RECIPIENTE

PublicadaInvention Patent

Application data

Number

PI8703253

Type

Invention Patent

Filing

06/26/1987

Publication

03/15/1988

Progress at the INPI

  1. Filing06/26/87
  2. Publication03/15/88
  3. Examination10/09/90
  4. Allowance03/01/94
  5. Grant10/25/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 03/15/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Paul Wurth S.A

LU

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Inventors

G. S. (pessoa física)

LU

P. M. (pessoa física)

LU

Technical data

IPC Classification

Priority claims

LU

86 495 · 06/30/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

03/15/1988

RPI 908

Pedido de patente depositado

#2.1

09/29/1987

RPI 884

Carta-patente expirada

#21.1

Patente extinta em 26/06/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

06/14/1994

RPI 1228

Deferimento

#9.1

03/01/1994

RPI 1213

Solicitação de exame técnico

#4.1

10/09/1990

RPI 1036

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