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Official data from INPI

QUELATO DE N,N-BIS-(2-HIDROXIETIL)-GLICINA/METAL, SOLÚVEL EM ÁGUA E PROCESSO PARA PREPARÁ-LO; PROCESSO PARA SELETIVAMENTE TAMPONAR ZONAS PERMEÁVEIS EM FORMAÇÕES SUBTERRÂNEAS OU VAZAMENTOS SUBTERRÂNEOS E PROCESSO DE FRATURA HIDRÁULICA

PublicadaInvention Patent

Application data

Number

PI8801030

Type

Invention Patent

Filing

03/09/1988

Publication

10/18/1988

Progress at the INPI

  1. Filing03/09/88
  2. Publication10/18/88
  3. Examination02/13/91
  4. Allowance
  5. Grant
  6. In force

Published on 10/18/1988, 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: 10/18/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

D. P. (pessoa física)

US

K. S. (pessoa física)

US

Technical data

Priority claims

US

031.921 · 03/10/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

10/18/1988

RPI 939

Pedido de patente depositado

#2.1

05/31/1988

RPI 919

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C07C 126/02.

03/27/2018

RPI 2464

Retificação

#15.3

11/12/1996

RPI 1354

Solicitação de exame técnico

#4.1

02/13/1991

RPI 1054

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