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Official data from INPI

SISTEMA DE RETICULAÇÃO RETARDADA PARA FLUIDOS DE FRATURAMENTO

Prazo de SigiloInvention Patent

Application data

Number

PI8903068

Type

Invention Patent

Filing

06/23/1989

Publication

02/06/1990

Progress at the INPI

  1. Filing06/23/89
  2. Publication02/06/90
  3. Examination04/14/92
  4. Allowance
  5. Grant
  6. In force

Published on 02/06/1990, the application is awaiting technical examination at the INPI, which decides whether the invention meets the patentability requirements.

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Latest action published by the INPI: 08/15/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pumptech N.V.

BE

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Inventors

K. C. (pessoa física)

Technical data

IPC Classification

Priority claims

US

07/210,271 · 06/23/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/15/1989

RPI 982

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: E21B 43/26; C09K 7/00.

03/20/2018

RPI 2463

Retificação

#15.3

04/29/1997

RPI 1378

Solicitação de exame técnico

#4.1

04/14/1992

RPI 1115

Publicação do pedido de patente

#3.1

02/06/1990

RPI 1005

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