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Official data from INPI

APARELHO CONVERSOR.

ConcedidaInvention Patent

Application data

Number

PI8004651

Type

Invention Patent

Filing

07/25/1980

Publication

-

Progress at the INPI

  1. Filing07/25/80
  2. Publication
  3. Examination04/26/83
  4. Allowance10/18/83
  5. Grant04/24/84
  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: 04/24/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

Inventors

J. F. (pessoa física)

Technical data

IPC Classification

Priority claims

US

061.532 · 07/27/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

01/31/1984

RPI 693

Deferimento

#9.1

10/18/1983

RPI 678

Solicitação de exame técnico

#4.1

04/26/1983

RPI 653

Carta-patente expirada

#21.1

09/19/1995

RPI 1294

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