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Official data from INPI

PROCESSO PARA LIXIVIACAO SELETIVA DE MATE DE NIQUEL-COBRE

ConcedidaInvention Patent

Application data

Number

PI8004019

Type

Invention Patent

Filing

06/26/1980

Publication

-

Progress at the INPI

  1. Filing06/26/80
  2. Publication
  3. Examination
  4. Allowance07/10/84
  5. Grant02/26/85
  6. Expired09/12/95

The letters patent expired on 09/12/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 02/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Outokumpu OY

FI

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Inventors

H. S. (pessoa física)

M. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/26/1985

RPI 749

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

07/10/1984

RPI 716

Exigência - art. 36 da LPI

#6.1

11/29/1983

RPI 684

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C22B 3/00; C22B 15/08; C22B 15/14; C25C 1/06; C25C 1/00.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

09/12/1995

RPI 1293

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