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Official data from INPI

PROCESSO METALOTÉRMICO PARA PRODUÇÃO DE LINGOTES DE METAIS REFRATÁRIOS.

ConcedidaInvention Patent

Application data

Number

PI8105307

Type

Invention Patent

Filing

08/19/1981

Publication

03/29/1983

Progress at the INPI

  1. Filing08/19/81
  2. Publication03/29/83
  3. Examination05/07/85
  4. Allowance11/16/88
  5. Grant07/25/89
  6. In force08/19/01

The patent was granted on 07/25/1989 and is in force until 08/19/2001. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:08/19/2001

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Latest action published by the INPI: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. M. (pessoa física)

MG, BR

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Inventors

B. W. (pessoa física)

B. G. (pessoa física)

F. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/25/1989

RPI 979

Notificação para pagamento de retribuição

#13.1

03/07/1989

RPI 959

Republicação - classificação IPC

#15.11

11/22/1988

RPI 944

Deferimento

#9.1

11/16/1988

RPI 943

Solicitação de exame técnico

#4.1

05/07/1985

RPI 759

Publicação do pedido de patente

#3.1

03/29/1983

RPI 649

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