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

PROCESSOS PARA REDUÇÃO DA ENERGIA DE RUÍDO EM UM SINAL ACÚSTICO-PILOTO DETECTADO NO TOPO DE UMA COLUNA DE PERFURAÇÃO E PARA DETERMINAÇÃO DE LOCALIZAÇÃO DE INTERFACES NO SUBSOLO NA REGIÃO DA TERRA EM TORNO DE UM FURO DE POÇO.

ArquivadaInvention PatentPCT · US1990000415

Application data

Number

PI9007046

Type

Invention Patent

Filing

01/19/1990

Publication

10/22/1991

PCT

US1990000415

Progress at the INPI

  1. Filing01/19/90
  2. Publication10/22/91
  3. Examination10/13/92
  4. Allowance12/20/94
  5. Abandoned
  6. In force

The application was allowed on 12/20/1994 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 02/27/1996. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Western Atlas International, Inc

US

See this company's full portfolio

Inventors

J. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/300,315 · 01/23/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

02/27/1996

RPI 1317

Notificação para pagamento de retribuição

#13.1

05/02/1995

RPI 1274

Deferimento

#9.1

12/20/1994

RPI 1255

Solicitação de exame técnico

#4.1

10/13/1992

RPI 1141

Notificação de entrada na fase nacional - PCT

#1.3

10/22/1991

RPI 1090

Patent monitoring

Track this patent in real time.

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