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Official data from INPI

PROCESSO DE SOLUBILIZAÇÃO DE ÓXIDO DE MAGNÉSIO E NIQUEL EM MINÉRIO DE SERPENTINA NIQUELÍFERA.

ConcedidaInvention Patent

Application data

Number

PI8107095

Type

Invention Patent

Filing

11/03/1981

Publication

07/20/1982

Progress at the INPI

  1. Filing11/03/81
  2. Publication07/20/82
  3. Examination08/28/84
  4. Allowance03/31/87
  5. Grant09/29/87
  6. Terminated08/07/90

The patent was granted on 09/29/1987 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Falconbridge Nickel Mines Limited

Inventors

D. R. (pessoa física)

H. R. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8035578 · 11/05/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Deferimento

#9.1

03/31/1987

RPI 858

Exigência - art. 36 da LPI

#6.1

04/22/1986

RPI 809

Conhecimento de parecer técnico

#7.1

01/29/1985

RPI 745

Solicitação de exame técnico

#4.1

08/28/1984

RPI 723

Publicação do pedido de patente

#3.1

07/20/1982

RPI 613

Pedido de patente depositado

#2.1

12/15/1981

RPI 582

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C22B 3/00; C22B 23/04.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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