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Official data from INPI

PERFIL REFRATARIO BASICO QUEIMADO

Em AnáliseInvention Patent
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Application data

Number

PI7801950

Type

Invention Patent

Filing

03/31/1977

Publication

-
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Progress at the INPI

  1. Filing03/31/77
  2. Publication
  3. Examination
  4. Allowance06/12/84
  5. Grant12/26/84
  6. Terminated10/03/89

The patent was granted on 12/26/1984 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. I. (pessoa física)

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Inventors

D. B. (pessoa física)

Technical data

IPC Classification

C04B 35/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/03/1989

RPI 989

Concessão da patente

#16.1

12/26/1984

RPI 740

Deferimento

#9.1

06/12/1984

RPI 712

Exigência - art. 36 da LPI

#6.1

12/20/1983

RPI 687

Exigência - art. 36 da LPI

#6.1

01/11/1983

RPI 638

6.2

12/15/1981

RPI 582

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