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

OBTURADOR RETRATIL PARA POCO E PROCESSO PARA RETRACAO DE UM OBTURADOR DE POCO

ConcedidaInvention Patent

Application data

Number

PI8302562

Type

Invention Patent

Filing

11/17/1982

Publication

10/02/1984

Progress at the INPI

  1. Filing11/17/82
  2. Publication10/02/84
  3. Examination02/05/85
  4. Allowance12/29/87
  5. Grant07/26/88
  6. Terminated04/25/95

The patent was granted on 07/26/1988 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HUGHES TOOL CO [US]

Inventors

E. W. (pessoa física)

M. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

06/16/1987

RPI 869

Solicitação de exame técnico

#4.1

02/05/1985

RPI 746

Publicação do pedido de patente

#3.1

10/02/1984

RPI 728

Pedido de patente depositado

#2.1

06/28/1983

RPI 662

Anuidade - prazo legal encerrado

#18.2

04/25/1995

RPI 1273

Patent monitoring

Track this patent in real time.

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