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Official data from INPI

TIJOLOS E MASSAS NAO QUEIMADOS CONTENDO CARBONO RESISTENTES AO FOGO, AB BASE DE MAGNESIA SINTERIZADA

ConcedidaInvention Patent

Application data

Number

PI8005007

Type

Invention Patent

Filing

08/10/1979

Publication

-

Progress at the INPI

  1. Filing08/10/79
  2. Publication
  3. Examination
  4. Allowance05/22/84
  5. Grant11/27/84
  6. Terminated02/04/92

The patent was granted on 11/27/1984 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: 11/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

VEITSCHER MAGNESITWERKE AG

Inventors

G. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/27/1984

RPI 736

Notificação para pagamento de retribuição

#13.1

09/04/1984

RPI 724

Deferimento

#9.1

05/22/1984

RPI 709

Pedido de certificado de adição de invenção

#5.1

12/01/1981

RPI 580

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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