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Official data from INPI

APERFEIÇOAMENTO APLICADO À CAIXA DE DERIVAÇÃO

Prazo de SigiloInvention Patent
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Application data

Number

PI8803416

Type

Invention Patent

Filing

07/04/1988

Publication

03/01/1990
View on INPI

Progress at the INPI

  1. Filing07/04/88
  2. Publication03/01/90
  3. Examination01/02/91
  4. Allowance
  5. Grant
  6. In force

Published on 03/01/1990, 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: 12/20/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. D. (pessoa física)

SP, BR

Inventors

J. D. (pessoa física)

BR

Technical data

IPC Classification

H02G 3/08

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

12/20/1988

RPI 948

Republicação - classificação IPC

#15.11

01/05/2010

RPI 2035

Retificação

#15.3

09/17/1991

RPI 1085

Solicitação de exame técnico

#4.1

01/02/1991

RPI 1048

Publicação do pedido de patente

#3.1

03/01/1990

RPI 1007

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