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Official data from INPI

DISPOSITIVO PARA ELEVAR A TEMPERATURA DE UMA PLURALIDADE DE SOLIDOS E PROCESSO E APARELHO PARA SEPARAR UM FLUXO CONCORRENTE DE SOLIDOS E GAS QUENTE DE COMBUSTAO

ConcedidaInvention Patent

Application data

Number

PI7907399

Type

Invention Patent

Filing

11/14/1979

Publication

-

Progress at the INPI

  1. Filing11/14/79
  2. Publication
  3. Examination
  4. Allowance12/26/84
  5. Grant06/25/85
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TOSCO CORP

Inventors

V. R. (pessoa física)

W. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

04/16/1985

RPI 756

Deferimento

#9.1

12/26/1984

RPI 740

Exigência - art. 36 da LPI

#6.1

09/20/1983

RPI 674

Exigência - art. 36 da LPI

#6.1

02/16/1983

RPI 643

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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