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Official data from INPI

COMPOSIÇÃO REFRATÁRIA E PROCESSO PARA A FORMAÇÃO DE UM BLOCO GRANDE UTILIZANDO A MESMA

ConcedidaInvention Patent

Application data

Number

PI8105740

Type

Invention Patent

Filing

09/08/1981

Publication

05/25/1982

Progress at the INPI

  1. Filing09/08/81
  2. Publication05/25/82
  3. Examination09/13/83
  4. Allowance09/06/88
  5. Grant05/30/89
  6. In force09/08/01

The patent was granted on 05/30/1989 and is in force until 09/08/2001. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:09/08/2001

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Latest action published by the INPI: 05/30/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ALUMINUM COMPANY OF AMERICA

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Inventors

H. J. (pessoa física)

L. R. (pessoa física)

Technical data

IPC Classification

Priority claims

US

185.480 · 09/09/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/30/1989

RPI 971

Notificação para pagamento de retribuição

#13.1

12/27/1988

RPI 949

Deferimento

#9.1

09/06/1988

RPI 933

Exigência - art. 36 da LPI

#6.1

12/22/1987

RPI 896

Exigência - art. 36 da LPI

#6.1

06/02/1987

RPI 867

Exigência - art. 36 da LPI

#6.1

03/05/1985

RPI 750

6.2

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

09/13/1983

RPI 673

Publicação do pedido de patente

#3.1

05/25/1982

RPI 605

Pedido de patente depositado

#2.1

10/20/1981

RPI 574

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