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

PROCEDIMENTO PARA PRODUZIR CHUMBO METALICO A PARTIR DE CONCENTRADO DE SULFETO

ConcedidaInvention Patent

Application data

Number

PI8300758

Type

Invention Patent

Filing

02/12/1982

Publication

11/16/1983

Progress at the INPI

  1. Filing02/12/82
  2. Publication11/16/83
  3. Examination03/07/84
  4. Allowance06/23/87
  5. Grant12/29/87
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

OUTOKUMPU OY [FI]

Inventors

N. E. (pessoa física)

T. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

10/20/1987

RPI 887

Deferimento

#9.1

06/23/1987

RPI 870

Exigência - art. 36 da LPI

#6.1

07/15/1986

RPI 821

6.2

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

03/07/1984

RPI 698

Publicação do pedido de patente

#3.1

11/16/1983

RPI 682

Pedido de patente depositado

#2.1

04/05/1983

RPI 650

Carta-patente expirada

#21.1

Patente extinta em 10/02/98

08/19/2008

RPI 1963

Patent monitoring

Track this patent in real time.

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