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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE AÇO COM BAIXOS TEORES DE HIDROGÊIO EM UM CONVERSOR DE SOPRGEM DE OXIGÊIO.

ConcedidaInvention Patent

Application data

Number

PI8004949

Type

Invention Patent

Filing

08/06/1980

Publication

-

Progress at the INPI

  1. Filing08/06/80
  2. Publication
  3. Examination
  4. Allowance11/26/85
  5. Grant06/24/86
  6. Expired09/19/95

The letters patent expired on 09/19/1995: 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: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. M. (pessoa física)

DE

Inventors

B. K. (pessoa física)

Technical data

IPC Classification

Priority claims

DE

P 29 31 957.1 · 08/07/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

04/15/1986

RPI 808

Deferimento

#9.1

11/26/1985

RPI 788

Exigência - art. 36 da LPI

#6.1

11/29/1983

RPI 684

Carta-patente expirada

#21.1

09/19/1995

RPI 1294

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