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Official data from INPI

MOLDE E PROCESSO PARA FUNDICAO CONTINUA

ConcedidaInvention Patent

Application data

Number

PI8100023

Type

Invention Patent

Filing

01/05/1981

Publication

09/08/1982

Progress at the INPI

  1. Filing01/05/81
  2. Publication09/08/82
  3. Examination11/03/81
  4. Allowance10/23/84
  5. Grant04/30/85
  6. Terminated08/07/90

The patent was granted on 04/30/1985 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NIPPON STEEL CORP [JP]

Inventors

K. M. (pessoa física)

M. O. (pessoa física)

T. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Deferimento

#9.1

10/23/1984

RPI 731

Solicitação de exame técnico

#4.1

01/18/1983

RPI 639

Publicação do pedido de patente

#3.1

09/08/1982

RPI 620

Solicitação de exame técnico

#4.1

11/03/1981

RPI 576

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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