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Official data from INPI

PROCESSO PARA O APERFEICOAMENTO DO BALANCO TERMICO NO REFINO DE FERRO GUSA

ConcedidaInvention Patent

Application data

Number

PI7808087

Type

Invention Patent

Filing

12/10/1977

Publication

-

Progress at the INPI

  1. Filing12/10/77
  2. Publication
  3. Examination
  4. Allowance12/20/83
  5. Grant06/26/84
  6. Expired05/24/94

The letters patent expired on 05/24/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. E. (pessoa física)

Inventors

B. K. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/26/1984

RPI 714

Notificação para pagamento de retribuição

#13.1

04/17/1984

RPI 704

Deferimento

#9.1

12/20/1983

RPI 687

6.3

09/20/1983

RPI 674

Exigência - art. 36 da LPI

#6.1

08/02/1983

RPI 667

Exigência - art. 36 da LPI

#6.1

06/29/1982

RPI 610

6.2

12/15/1981

RPI 582

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

Pedido de licença compulsória

#20.1

04/24/1990

RPI 1015

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