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Official data from INPI

DISPOSITIVO PARA DETERMINACAO DA DIRECAO DA PERDA D'AGUA EM FUROS DE SONDAGEM

Em AnáliseInvention Patent

Application data

Number

PI8505016

Type

Invention Patent

Filing

10/09/1985

Publication

05/19/1987

Progress at the INPI

Under appeal
  1. Filing10/09/85
  2. Publication05/19/87
  3. Examination07/18/89
  4. Refused12/04/90
  5. Grant
  6. In force

The application was refused by the INPI on 12/04/1990. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 07/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. A. (pessoa física)

Inventors

A. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/18/1989

RPI 978

Publicação do pedido de patente

#3.1

05/19/1987

RPI 865

Pedido de patente depositado

#2.1

12/17/1985

RPI 791

Republicação - classificação IPC

#15.11

A classificação anterior era: E21B 47/10.

08/28/2012

RPI 2173

Indeferimento

#9.2

12/04/1990

RPI 1044

Conhecimento de parecer técnico

#7.1

04/10/1990

RPI 1013

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