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Official data from INPI

PROCESSO PARA FRATURAR FORMACOES SUBTERRANEAS

Em AnáliseInvention Patent

Application data

Number

PI7902372

Type

Invention Patent

Filing

04/20/1978

Publication

-

Progress at the INPI

  1. Filing04/20/78
  2. Publication
  3. Examination
  4. Allowance10/13/82
  5. Grant11/27/84
  6. Terminated05/17/88

The patent was granted on 11/27/1984 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HALLIBURTON CO

See this company's full portfolio

Inventors

B. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/17/1988

RPI 917

Concessão da patente

#16.1

11/27/1984

RPI 736

15.15

02/28/1984

RPI 697

110

12/27/1983

RPI 688

120

08/30/1983

RPI 671

Recurso

#12.1

02/08/1983

RPI 642

Deferimento

#9.1

10/13/1982

RPI 625

15.0

08/17/1982

RPI 617

Exigência - art. 36 da LPI

#6.1

05/18/1982

RPI 604

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