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Official data from INPI

PROCESSO PARA REMOÇÃO DE CROSTA DO INTERIOR DE POÇOS PRODUTORES DE PETRÓLEO E GÁS

PublicadaInvention Patent

Application data

Number

PI8804403

Type

Invention Patent

Filing

08/29/1988

Publication

05/23/1989

Progress at the INPI

  1. Filing08/29/88
  2. Publication05/23/89
  3. Examination07/09/91
  4. Allowance
  5. Grant
  6. In force

Published on 05/23/1989, 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: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

G. C. (pessoa física)

US

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Inventors

W. W. (pessoa física)

Technical data

IPC Classification

Priority claims

US

106.826 · 10/09/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/23/1989

RPI 970

Pedido de patente depositado

#2.1

01/31/1989

RPI 954

Retificação

#15.3

04/18/1995

RPI 1272

Solicitação de exame técnico

#4.1

07/09/1991

RPI 1075

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