Official data from INPI

PROCESSO PARA A PROPAGACAO DE FRATURA HIDRAULICA EM FORMACOES QUE CONTEM HIDROCARBONETOS

ArquivadaInvention Patent

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Application data

Number

PI8705393

Type

Invention Patent

Filing

01/23/1987

Publication

12/22/1987

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Progress at the INPI

Filing01/23/87
Publication12/22/87
Abandoned
Allowance
Grant
In force

The application was abandoned: examination was not requested within the 36 months following the 01/23/1987 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNIV COLUMBIA [US]

UNIV LELAND STANFORD JUNIOR [US]

Inventors

R. [. (pessoa física)

Z. [. (pessoa física)

Technical data

IPC Classification

E21B 43/26 E21B 47/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

12/22/1987

RPI 896

Arquivamento - Art. 33 da LPI

#11.1

04/30/1991

RPI 1065

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