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Official data from INPI

SISTEMA DE AGENTE DE DIVERS—O A ALTA TEMPERATURA PARA A INDÚSTRIA PETROLÍFERA E PROCESSO DE PREPARAÇÃO CORRESPONDENTE

PublicadaInvention Patent

Application data

Number

PI8803162

Type

Invention Patent

Filing

06/23/1988

Publication

01/10/1989

Progress at the INPI

  1. Filing06/23/88
  2. Publication01/10/89
  3. Abandoned03/05/91
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

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Latest action published by the INPI: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pumptech N.V

BE

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Inventors

N. D. (pessoa física)

FR

O. L. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

8708852 · 06/23/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/10/1989

RPI 951

Pedido de patente depositado

#2.1

11/22/1988

RPI 944

10.1

08/03/1993

RPI 1183

10.1

06/29/1993

RPI 1178

Solicitação de exame técnico

#4.1

03/05/1991

RPI 1057

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