Official data from INPI

Adensante metálico adequado para formação de fluidos petrolíferos utilizáveis em perfurações petrolíferas, processo para sua obtenção e lama de perfuração petrolífera contendo tais adensantes.

ArquivadaInvention Patent

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Application data

Number

PI8500513

Type

Invention Patent

Filing

12/31/1919

Publication

09/09/1986

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Progress at the INPI

Filing12/31/19
Publication09/09/86
Abandoned
Allowance
Grant
In force

The application was abandoned: examination was not requested within the 36 months following the 12/31/1919 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: 12/06/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ADIP - Aditivos para perfurações petrolíferas Ltda

Inventors

J. C. (pessoa física)

R. M. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

12/06/1988

RPI 946

Publicação do pedido de patente

#3.1

09/09/1986

RPI 829

Pedido de patente depositado

#2.1

04/30/1985

RPI 758

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