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Official data from INPI

PROCESSO PARA FLOTAÇÃO COM ESPUMA DE MINÉRIO DE FOSFATO.

ConcedidaInvention Patent

Application data

Number

PI8402342

Type

Invention Patent

Filing

05/17/1984

Publication

04/02/1985

Progress at the INPI

  1. Filing05/17/84
  2. Publication04/02/85
  3. Examination02/24/87
  4. Allowance04/25/89
  5. Grant10/24/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Berol Kemi AB

SE

See this company's full portfolio

Inventors

K. H. (pessoa física)

SE

Technical data

IPC Classification

Priority claims

SE

8302993-4 · 05/27/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

08/22/1989

RPI 983

Deferimento

#9.1

04/25/1989

RPI 966

Exigência - art. 36 da LPI

#6.1

11/29/1988

RPI 945

Solicitação de exame técnico

#4.1

02/24/1987

RPI 853

Publicação do pedido de patente

#3.1

04/02/1985

RPI 754

Pedido de patente depositado

#2.1

07/31/1984

RPI 719

Carta-patente expirada

#21.1

Patente extinta em 17/05/99

07/08/2008

RPI 1957

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