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

MEDIDOR DE FLUXO DE VORTICE E MEDIDOR TRIFILAR

Em AnáliseInvention Patent

Application data

Number

PI7807367

Type

Invention Patent

Filing

11/14/1977

Publication

-

Progress at the INPI

  1. Filing11/14/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant08/27/85
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 01/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

YOKOGAWA ELECTRIC WORKS LTD

See this company's full portfolio

Inventors

A. T. (pessoa física)

A. T. (pessoa física)

I. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.4

01/19/1988

RPI 900

Concessão da patente

#16.1

08/27/1985

RPI 775

14.4

11/01/1983

RPI 680

Notificação para pagamento de retribuição

#13.1

03/22/1983

RPI 648

11.8

02/22/1983

RPI 644

Exigência - art. 36 da LPI

#6.1

11/03/1981

RPI 576

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

Patent monitoring

Track this patent in real time.

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