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

PROCESSO DE HIDROCONVERSAO SIMULTANEA DE UM OLEO HIDROCARBONETO PESADO E CARVAO,EM MISTURA

ConcedidaInvention Patent

Application data

Number

PI7704251

Type

Invention Patent

Filing

07/02/1976

Publication

-

Progress at the INPI

  1. Filing07/02/76
  2. Publication
  3. Examination
  4. Allowance01/11/83
  5. Grant07/26/83
  6. Expired07/13/93

The letters patent expired on 07/13/1993: 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: 07/26/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

See this company's full portfolio

Inventors

A. C. (pessoa física)

B. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1983

RPI 666

Notificação para pagamento de retribuição

#13.1

05/24/1983

RPI 657

Deferimento

#9.1

01/11/1983

RPI 638

15.0

09/28/1982

RPI 623

Exigência - art. 36 da LPI

#6.1

07/27/1982

RPI 614

Carta-patente expirada

#21.1

07/13/1993

RPI 1180

Patent monitoring

Track this patent in real time.

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