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Official data from INPI

PROCESSO PARA A PRODUCAO DE TUBOS PLASTICOS DE PAREDE DUPLA,CUJA PAREDE EXTERNA APRESENTA ONDULACOES TRANSVERSAIS,SENDO LISA A PAREDE INTERNA,E TUBO PRODUZIDO CONSOANTE ESTE MESMO PROCESSO

Em AnáliseInvention Patent

Application data

Number

PI7705605

Type

Invention Patent

Filing

08/24/1976

Publication

-

Progress at the INPI

  1. Filing08/24/76
  2. Publication
  3. Examination
  4. Allowance03/16/82
  5. Grant05/31/83
  6. Terminated12/15/87

The patent was granted on 05/31/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. W. (pessoa física)

Inventors

H. R. (pessoa física)

H. W. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

05/31/1983

RPI 658

15.15

03/29/1983

RPI 649

110

12/21/1982

RPI 635

Recurso

#12.1

06/15/1982

RPI 608

Deferimento

#9.1

03/16/1982

RPI 595

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