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Official data from INPI

FERRAMENTAS PARA TESTES DE ESTANQUEIDADE EM CABEÇA DE LANÇA E LANÇA DE OXIGÊNIO UTILIZADAS NOS PROCESSOS DE REFINO DO AÇO.

ConcedidaInvention Patent

Application data

Number

PI8104155

Type

Invention Patent

Filing

06/30/1981

Publication

02/08/1983

Progress at the INPI

  1. Filing06/30/81
  2. Publication02/08/83
  3. Examination02/21/84
  4. Allowance05/14/85
  5. Grant12/31/85
  6. Terminated08/13/96

The patent was granted on 12/31/1985 and later terminated. Protection ended before the full term and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/31/1985. 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

G. S. (pessoa física)

BR

J. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

09/03/1985

RPI 776

Deferimento

#9.1

05/14/1985

RPI 760

Exigência - art. 36 da LPI

#6.1

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

02/21/1984

RPI 696

Publicação do pedido de patente

#3.1

02/08/1983

RPI 642

10.3

09/10/1996

RPI 1345

15.7

09/10/1996

RPI 1345

10.1

08/13/1996

RPI 1341

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