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Official data from INPI

TUBO PARA DRENAGEM SUBTERRANEA

Em AnáliseInvention Patent

Application data

Number

PI7801669

Type

Invention Patent

Filing

03/18/1977

Publication

-

Progress at the INPI

  1. Filing03/18/77
  2. Publication
  3. Examination
  4. Allowance08/17/82
  5. Grant02/22/83
  6. Terminated06/14/88

The patent was granted on 02/22/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. I. (pessoa física)

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Inventors

H. S. (pessoa física)

I. M. (pessoa física)

I. N. (pessoa física)

K. Y. (pessoa física)

U. Y. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/28/1982

RPI 636

15.0

08/31/1982

RPI 619

Deferimento

#9.1

08/17/1982

RPI 617

6.2

12/29/1981

RPI 584

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