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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8301220

Type

Invention Patent

Filing

03/11/1983

Publication

11/22/1983
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Progress at the INPI

  1. Filing03/11/83
  2. Publication11/22/83
  3. Examination03/20/84
  4. Allowance11/10/87
  5. Grant05/31/88
  6. Terminated04/02/96

The patent was granted on 05/31/1988 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: 05/31/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Mines de Potasse D Alsace S.A.

FR

Inventors

B. M. (pessoa física)

W. E. (pessoa física)

Technical data

IPC Classification

C01D 5/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1988

RPI 919

Notificação para pagamento de retribuição

#13.1

03/01/1988

RPI 906

Deferimento

#9.1

11/10/1987

RPI 890

Exigência - art. 36 da LPI

#6.1

06/10/1986

RPI 816

Exigência - art. 36 da LPI

#6.1

05/07/1985

RPI 759

Solicitação de exame técnico

#4.1

03/20/1984

RPI 700

Publicação do pedido de patente

#3.1

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

04/26/1983

RPI 653

Anuidade - prazo legal encerrado

#18.2

04/02/1996

RPI 1322

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