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Official data from INPI

PROCESSO DE LIXIVIAÇÃO DE MATÉRIA PRIMA CONTENDO SULFETO DE METAL

IndeferidaInvention Patent

Application data

Number

PI8201905

Type

Invention Patent

Filing

04/02/1982

Publication

11/16/1983

Progress at the INPI

Under appeal
  1. Filing04/02/82
  2. Publication11/16/83
  3. Examination02/14/84
  4. Refused02/04/86
  5. Grant
  6. In force

The application was refused by the INPI on 02/04/1986. The invention was never patented.

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Latest action published by the INPI: 02/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Elkem A/S

NO

F. A. (pessoa física)

NO

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Inventors

C. H. (pessoa física)

NO

T. T. (pessoa física)

NO

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

02/04/1986

RPI 798

Solicitação de exame técnico

#4.1

02/14/1984

RPI 695

Publicação do pedido de patente

#3.1

11/16/1983

RPI 682

Pedido de patente depositado

#2.1

05/25/1982

RPI 605

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