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Official data from INPI

PERMUTADOR DE CALOR COMPORTANDO UM FEIXE DE TUBOS QUE DESEMBOCAM EM PLACAS COLETORAS LIGADAS MECANICAMENTE A CAIXAS D'AGUA

Concessão AnuladaInvention Patent

Application data

Number

PI8007268

Type

Invention Patent

Filing

11/12/1979

Publication

-

Progress at the INPI

  1. Filing11/12/79
  2. Publication
  3. Examination10/13/81
  4. Allowance12/20/83
  5. Grant06/26/84
  6. Expired12/26/95

The letters patent expired on 12/26/1995: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. C. (pessoa física)

FR

Inventors

M. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

09/25/1984

RPI 727

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

Exigência - art. 36 da LPI

#6.1

08/16/1983

RPI 669

Solicitação de exame técnico

#4.1

10/13/1981

RPI 573

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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