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Official data from INPI

DISPOSITIVO PARA PERMUTA TERMICA MEDIANTE CONTATO DE PARTICULAS SOLIDAS E DISPOSITIVOS PARA O TRATAMENTO DE PARTICULAS SOLIDAS COMPREENDENDO COMBUSTIVEIS

ConcedidaInvention Patent

Application data

Number

PI7906014

Type

Invention Patent

Filing

09/21/1978

Publication

-

Progress at the INPI

  1. Filing09/21/78
  2. Publication
  3. Examination05/18/82
  4. Allowance09/27/83
  5. Grant03/27/84
  6. Expired04/25/95

The letters patent expired on 04/25/1995: 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: 03/27/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. G. (pessoa física)

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Inventors

M. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/27/1984

RPI 701

Notificação para pagamento de retribuição

#13.1

01/17/1984

RPI 691

Deferimento

#9.1

09/27/1983

RPI 675

Exigência - art. 36 da LPI

#6.1

03/15/1983

RPI 647

Solicitação de exame técnico

#4.1

05/18/1982

RPI 604

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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