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Official data from INPI

FORNO DE ARCO ELÉTRICO

ConcedidaInvention Patent

Application data

Number

PI7803878

Type

Invention Patent

Filing

06/19/1978

Publication

-

Progress at the INPI

  1. Filing06/19/78
  2. Publication
  3. Examination
  4. Allowance03/08/83
  5. Grant09/27/83
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

L. C. (pessoa física)

US

Inventors

P. W. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/28/1983

RPI 662

Deferimento

#9.1

03/08/1983

RPI 646

Exigência - art. 36 da LPI

#6.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

Patente extinta em 16/06/93

08/19/2008

RPI 1963

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