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Official data from INPI

EMPREGO DE ÉTERES ESCOLHIDOS DE ÁLCOOIS MONOFUNCIONAIS EM LAVAGENS DE PERFURAÇÃO

Em AnáliseInvention PatentPCT · EP1990000498

Application data

Number

PI9007259

Type

Invention Patent

Filing

03/29/1990

Publication

03/17/1992

PCT

EP1990000498

Progress at the INPI

  1. Filing03/29/90
  2. Publication03/17/92
  3. Examination07/13/93
  4. Allowance
  5. Grant
  6. In force

Published on 03/17/1992, 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: 03/27/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. A. (pessoa física)

DE

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Inventors

D. H. (pessoa física)

DE

D. S. (pessoa física)

DE

D. T. (pessoa física)

DE

H. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 39 11 299.3 · 04/07/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C09K 7/06.

03/27/2018

RPI 2464

Retificação

#15.3

11/28/1995

RPI 1304

Solicitação de exame técnico

#4.1

07/13/1993

RPI 1180

Notificação de entrada na fase nacional - PCT

#1.3

03/17/1992

RPI 1111

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