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Official data from INPI

SEM TITULO

ConcedidaInvention Patent
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Application data

Number

PI8004864

Type

Invention Patent

Filing

08/01/1980

Publication

-
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Progress at the INPI

  1. Filing08/01/80
  2. Publication
  3. Examination
  4. Allowance02/12/85
  5. Grant08/27/85
  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.

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Latest action published by the INPI: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. C. (pessoa física)

JP

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Inventors

J. M. (pessoa física)

K. A. (pessoa física)

S. W. (pessoa física)

Technical data

IPC Classification

C21B 7/10

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

09/04/1984

RPI 724

Exigência - art. 36 da LPI

#6.1

12/13/1983

RPI 686

Carta-patente expirada

#21.1

09/19/1995

RPI 1294

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