(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

AÇO FERRAMENTA.

ConcedidaInvention Patent

Application data

Number

PI8006475

Type

Invention Patent

Filing

10/08/1980

Publication

06/15/1982

Progress at the INPI

  1. Filing10/08/80
  2. Publication06/15/82
  3. Examination11/22/83
  4. Allowance10/23/84
  5. Grant05/28/85
  6. Expired11/14/95

The letters patent expired on 11/14/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/28/1985. 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

I. P. (pessoa física)

M. A. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

05/22/1984

RPI 709

Solicitação de exame técnico

#4.1

11/22/1983

RPI 683

Publicação do pedido de patente

#3.1

06/15/1982

RPI 608

Carta-patente expirada

#21.1

11/14/1995

RPI 1302

Cessão de direito de exploração

#22.1

05/01/1990

RPI 1016

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.