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Official data from INPI

PROCESSO PARA RECUPERAR CLORETO DE SODIO DE UM ESTERIL DE FLOTACAO DE MINERAIS POTASSIOS

ConcedidaInvention Patent

Application data

Number

PI8302440

Type

Invention Patent

Filing

05/11/1982

Publication

01/17/1984

Progress at the INPI

  1. Filing05/11/82
  2. Publication01/17/84
  3. Examination08/14/84
  4. Allowance04/08/86
  5. Grant11/24/87
  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: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ITALKALI [IT]

Inventors

S. G. (pessoa física)

V. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/24/1987

RPI 892

110

08/18/1987

RPI 878

Recurso

#12.1

08/19/1986

RPI 826

Deferimento

#9.1

04/08/1986

RPI 807

Exigência - art. 36 da LPI

#6.1

05/14/1985

RPI 760

Republicação - classificação IPC

#15.11

02/26/1985

RPI 749

Solicitação de exame técnico

#4.1

08/14/1984

RPI 721

Publicação do pedido de patente

#3.1

01/17/1984

RPI 691

Pedido de patente depositado

#2.1

06/28/1983

RPI 662

Carta-patente expirada

#21.1

Patente extinta em 10/05/98

08/19/2008

RPI 1963

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