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Official data from INPI

APERFEICOAMENTO EM PROCESSO E APARELHO PARA FABRICAR TUBOS METALICOS

Em AnáliseInvention Patent

Application data

Number

PI7706028

Type

Invention Patent

Filing

09/10/1976

Publication

-

Progress at the INPI

  1. Filing09/10/76
  2. Publication
  3. Examination
  4. Allowance10/06/81
  5. Grant07/27/82
  6. Terminated12/15/87

The patent was granted on 07/27/1982 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: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON STEEL CORP

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Inventors

K. T. (pessoa física)

M. W. (pessoa física)

N. K. (pessoa física)

S. S. (pessoa física)

Technical data

IPC Classification

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

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

02/02/1982

RPI 589

15.0

12/01/1981

RPI 580

Deferimento

#9.1

10/06/1981

RPI 572

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