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Official data from INPI

TUBO TENDO UMA EXTREMIDADE EM FORMA DE PONTA E CONEXÃO ROSQUEADA PARA TUBOS.

Em AnáliseInvention Patent
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Application data

Number

PI8606220

Type

Invention Patent

Filing

12/16/1986

Publication

07/05/1988
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Progress at the INPI

  1. Filing12/16/86
  2. Publication07/05/88
  3. Examination09/27/88
  4. Allowance03/06/90
  5. Grant09/25/90
  6. Expired07/22/08

The letters patent expired on 07/22/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Mannesmann S.A.

MG, BR

Mannesmann S/A

MG, BR

Vallourec & Mannesmann Tubes - V & M do Brasil S.A.

MG, BR

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Inventors

D. G. (pessoa física)

BR

Technical data

IPC Classification

F16L 15/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/27/1988

RPI 936

Publicação do pedido de patente

#3.1

07/05/1988

RPI 924

Pedido de patente depositado

#2.1

04/28/1987

RPI 862

Carta-patente expirada

#21.1

Patente extinta em 16/12/2001

07/22/2008

RPI 1959

Alteração de nome deferida

#25.4

Alterado de Mannesmann S/A.

04/17/2001

RPI 1580

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

06/26/1990

RPI 1024

Deferimento

#9.1

03/06/1990

RPI 1008

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