Official data from INPI

PROCESSO DE TRATAMENTO DE SALMURAS CONTENDO CLORETO DE MAGNESIO

ConcedidaInvention Patent

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Application data

Number

PI7707692

Type

Invention Patent

Filing

11/25/1976

Publication

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Progress at the INPI

Filing11/25/76
Publication
Examination
Allowance08/09/83
Grant02/28/84
Expired07/20/93

The letters patent expired on 07/20/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 02/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINES DO POTASSE D ALSACE SA

Inventors

A. A. (pessoa física)

B. M. (pessoa física)

Technical data

IPC Classification

C01F 5/30

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

11/29/1983

RPI 684

Deferimento

#9.1

08/09/1983

RPI 668

Exigência - art. 36 da LPI

#6.1

09/28/1982

RPI 623

Conhecimento de parecer técnico

#7.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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