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Official data from INPI

PROCESSO PARA A FABRICACAO DE OXIDO DE MAGNESIO PURO

Em AnáliseInvention Patent

Application data

Number

PI7702210

Type

Invention Patent

Filing

04/07/1976

Publication

-

Progress at the INPI

  1. Filing04/07/76
  2. Publication
  3. Examination
  4. Allowance12/27/83
  5. Grant04/24/84
  6. Terminated12/08/87

The patent was granted on 04/24/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

VEITSCHER MAGNESITWERKE AG [AT]

Inventors

G. [. (pessoa física)

G. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/08/1987

RPI 894

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

02/28/1984

RPI 697

100

12/27/1983

RPI 688

120

06/07/1983

RPI 659

Petição de recurso

#12.2

04/27/1982

RPI 601

15.0

01/12/1982

RPI 586

Indeferimento

#9.2

01/12/1982

RPI 586

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