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Official data from INPI

PRENSA COMPACTADORA DE LIMALHAS DE COBRE.

ConcedidaInvention Patent

Application data

Number

PI8104373

Type

Invention Patent

Filing

07/09/1981

Publication

02/16/1983

Progress at the INPI

  1. Filing07/09/81
  2. Publication02/16/83
  3. Examination02/21/84
  4. Allowance12/17/85
  5. Grant07/29/86
  6. Terminated03/19/96

The patent was granted on 07/29/1986 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: 07/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. N. (pessoa física)

RJ, BR

Companhia Siderúrgica Nacional - CSN

RJ, BR

See this company's full portfolio

Inventors

P. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/29/1986

RPI 823

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/17/1985

RPI 791

Exigência - art. 36 da LPI

#6.1

05/14/1985

RPI 760

Solicitação de exame técnico

#4.1

02/21/1984

RPI 696

Publicação do pedido de patente

#3.1

02/16/1983

RPI 643

Anuidade - prazo legal encerrado

#18.2

03/19/1996

RPI 1320

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