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Official data from INPI

ARTIGO DE FABRICAÇÃO TENDO TRANSMITÂNCIA VARIÁVEL EM RESPOSTA A UM CAMPO ELÉTRICO

PublicadaInvention Patent

Application data

Number

PI8802785

Type

Invention Patent

Filing

06/08/1988

Publication

12/27/1988

Progress at the INPI

  1. Filing06/08/88
  2. Publication12/27/88
  3. Examination02/19/91
  4. Allowance
  5. Grant
  6. In force

Published on 12/27/1988, 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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PPG INDUSTRIES INC [US]

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Inventors

C. G. (pessoa física)

US

D. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

060.543 · 06/10/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/27/1988

RPI 949

Pedido de patente depositado

#2.1

11/01/1988

RPI 941

Retificação

#15.3

06/07/1994

RPI 1227

Solicitação de exame técnico

#4.1

02/19/1991

RPI 1055

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