(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA O CRAQUEAMENTO TÉRMICO CONTINUO DE ÓLEOS HIDROCARBONETOS, E DE CARGAS RESIDUAIS; MISTURAS DE HIDROCARBONETOS

ConcedidaInvention Patent

Application data

Number

PI7904344

Type

Invention Patent

Filing

07/09/1979

Publication

-

Progress at the INPI

  1. Filing07/09/79
  2. Publication
  3. Examination
  4. Allowance06/05/84
  5. Grant12/26/84
  6. Expired04/18/95

The letters patent expired on 04/18/1995: 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: 12/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

A. M. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

29432/78 · 07/11/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/26/1984

RPI 740

Notificação para pagamento de retribuição

#13.1

10/02/1984

RPI 728

Deferimento

#9.1

06/05/1984

RPI 711

Exigência - art. 36 da LPI

#6.1

09/20/1983

RPI 674

Exigência - art. 36 da LPI

#6.1

02/01/1983

RPI 641

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.