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Official data from INPI

PROCESSO APERFEICOADO PARA PRODUZIR TUBULACAO REVESTIDA A PARTIR DE TIRA DE ACO,E INSTALACAO APERFEICOADA PARA PRODUZIR PORCOES DE TUBULACAO REVESTIDA A PARTIR DE TIRAS DE ACO

Em AnáliseInvention Patent
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Application data

Number

PI7507916

Type

Invention Patent

Filing

08/14/1975

Publication

-
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Progress at the INPI

  1. Filing08/14/75
  2. Publication
  3. Examination
  4. Allowance
  5. Grant
  6. Expired10/26/93

The letters patent expired on 10/26/1993: 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: 11/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALLIED TUBE & CONDUIT CORP

Inventors

O. A. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

11/07/1989

RPI 994

20.7

10/31/1989

RPI 993

Carta-patente expirada

#21.1

10/26/1993

RPI 1195

Pedido de licença compulsória

#20.1

10/30/1990

RPI 1039

20.7

10/23/1990

RPI 1038

Pedido de licença compulsória

#20.1

10/16/1990

RPI 1037

20.10

10/16/1990

RPI 1037

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