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Official data from INPI

PROCESSO PARA PRODUZIR PARTICULAS DE MAGNESIO NAO PIROFORICAS INCRUSTADAS COM SAL

ConcedidaInvention Patent

Application data

Number

PI7905426

Type

Invention Patent

Filing

08/25/1978

Publication

-

Progress at the INPI

  1. Filing08/25/78
  2. Publication
  3. Examination11/30/82
  4. Allowance12/20/83
  5. Grant06/26/84
  6. Terminated01/28/92

The patent was granted on 06/26/1984 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: 06/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

N. M. (pessoa física)

S. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/26/1984

RPI 714

Notificação para pagamento de retribuição

#13.1

04/17/1984

RPI 704

Deferimento

#9.1

12/20/1983

RPI 687

Exigência - art. 36 da LPI

#6.1

07/26/1983

RPI 666

Solicitação de exame técnico

#4.1

11/30/1982

RPI 632

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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