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Official data from INPI

PROCESSO PARA A OBTENCAO EM ESCALA TECNICA DE OXIDOS DE METAL ESPECIALMENTE OXIDO DE MAGNESIO,E DISPOSITIVO PARA A EXECUCAO DO PROCESSO

Em AnáliseInvention Patent

Application data

Number

PI7805368

Type

Invention Patent

Filing

08/22/1977

Publication

-

Progress at the INPI

  1. Filing08/22/77
  2. Publication
  3. Examination
  4. Allowance01/24/84
  5. Grant07/31/84
  6. Terminated06/14/88

The patent was granted on 07/31/1984 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

VEITSCHER MAGNESITWERKE AG

Inventors

G. M. (pessoa física)

G. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/24/1984

RPI 692

Exigência - art. 36 da LPI

#6.1

05/31/1983

RPI 658

Exigência - art. 36 da LPI

#6.1

08/24/1982

RPI 618

6.2

12/22/1981

RPI 583

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