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Official data from INPI

SISTEMA PARA EXTRACAO DE INFORMACAO DE MARCACAO DE TEMPO DE UMA ONDA PORTADORA MODULADA

ConcedidaInvention Patent

Application data

Number

PI7702901

Type

Invention Patent

Filing

05/10/1976

Publication

-

Progress at the INPI

  1. Filing05/10/76
  2. Publication
  3. Examination
  4. Allowance07/20/82
  5. Grant02/22/83
  6. Terminated10/23/90

The patent was granted on 02/22/1983 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: 02/22/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SCHLUMBERGER TECHNOLOGY CORP

Inventors

W. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/22/1983

RPI 644

Notificação para pagamento de retribuição

#13.1

12/07/1982

RPI 633

Deferimento

#9.1

07/20/1982

RPI 613

Exigência - art. 36 da LPI

#6.1

02/24/1982

RPI 592

15.0

10/06/1981

RPI 572

Anuidade - prazo legal encerrado

#18.2

10/23/1990

RPI 1038

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