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Official data from INPI

COMPOSIÇÃO TENDO UMA BAIXA RESISTÍVIDADE ELÉTRICA E PROCESSO PARA A PREPARAÇÃO DE UMA MISTURA DE FIBRA ELETRICAMENTE CONDUTIVA

Prazo de SigiloInvention Patent

Application data

Number

PI8802313

Type

Invention Patent

Filing

05/12/1988

Publication

12/13/1988

Progress at the INPI

  1. Filing05/12/88
  2. Publication12/13/88
  3. Examination04/16/91
  4. Allowance
  5. Grant
  6. In force

Published on 12/13/1988, 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: 12/13/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Armstrong World Industries, Inc

US

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Inventors

D. H. (pessoa física)

DE

N. H. (pessoa física)

US

R. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

049.822 · 05/15/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

12/13/1988

RPI 947

Publicação do pedido de patente

#3.1

12/13/1988

RPI 947

Retificação

#15.3

05/24/1994

RPI 1225

Solicitação de exame técnico

#4.1

04/16/1991

RPI 1063

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