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

APERFEICOAMENTOS EM REGISTRO DE GAS

ConcedidaInvention Patent

Application data

Number

PI7903174

Type

Invention Patent

Filing

05/21/1979

Publication

-

Progress at the INPI

  1. Filing05/21/79
  2. Publication
  3. Examination01/25/83
  4. Allowance07/10/84
  5. Grant02/26/85
  6. Expired07/26/94

The letters patent expired on 07/26/1994: 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: 02/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DELTA METAL SA

Inventors

F. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/26/1985

RPI 749

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

07/10/1984

RPI 716

Exigência - art. 36 da LPI

#6.1

10/04/1983

RPI 676

14.1

06/07/1983

RPI 659

Solicitação de exame técnico

#4.1

01/25/1983

RPI 640

Carta-patente expirada

#21.1

07/26/1994

RPI 1234

20.4

10/20/1992

RPI 1142

Patent monitoring

Track this patent in real time.

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