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Official data from INPI

PROCESSO PARA SEPARACAO DE MINERAIS DE FOSFATO DE UMA LAMINA DE MINERIO POR FLOTACAO E COMPOSTO PARA USO COMO REAGENTE COLETOR NA FLOTACAO

ConcedidaInvention Patent
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Application data

Number

PI8305155

Type

Invention Patent

Filing

09/21/1983

Publication

04/30/1985
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Progress at the INPI

  1. Filing09/21/83
  2. Publication04/30/85
  3. Examination05/06/86
  4. Allowance09/06/88
  5. Grant07/25/89
  6. Terminated02/18/92

The patent was granted on 07/25/1989 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KEMIRA OY [FI]

Inventors

A. J. (pessoa física)

K. T. (pessoa física)

S. U. (pessoa física)

Technical data

IPC Classification

B03D 1/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Exigência - art. 36 da LPI

#6.1

03/01/1988

RPI 906

Solicitação de exame técnico

#4.1

05/06/1986

RPI 811

Publicação do pedido de patente

#3.1

04/30/1985

RPI 758

Pedido de patente depositado

#2.1

11/22/1983

RPI 683

Anuidade - prazo legal encerrado

#18.2

02/18/1992

RPI 1107

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