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

PROCESSOS E APARELHO PARA DETERMINACAO DAS CARACTERISTICAS DINAMICAS DE FLUXO DE FLUIDOS DE PRODUCAO EM FURO DE POCO

Em AnáliseInvention Patent

Application data

Number

PI7806299

Type

Invention Patent

Filing

09/23/1977

Publication

-

Progress at the INPI

  1. Filing09/23/77
  2. Publication
  3. Examination
  4. Allowance04/06/82
  5. Grant11/30/82
  6. Terminated07/12/88

The patent was granted on 11/30/1982 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCHLUMBERGER SURENCO SA

See this company's full portfolio

Inventors

A. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

11/30/1982

RPI 632

Notificação para pagamento de retribuição

#13.1

07/27/1982

RPI 614

Deferimento

#9.1

04/06/1982

RPI 598

15.0

12/15/1981

RPI 582

Exigência - art. 36 da LPI

#6.1

10/27/1981

RPI 575

Related

Same category

Patent monitoring

Track this patent in real time.

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