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Official data from INPI

ESTRUTURA DE NÚCLEO MAGNÉTICO PARA CABEÇOTE TRANDUTOR E PROCESSO DE LEITURA E GRAVAÇÃO DE TRANSIÇÕES DE FLUXO MAGNÉTICO SOBRE SUPORTES MAGNETICAMENTE GRAVÁVEIS

Em AnáliseInvention Patent

Application data

Number

PI8705266

Type

Invention Patent

Filing

10/05/1987

Publication

05/24/1988

Progress at the INPI

  1. Filing10/05/87
  2. Publication05/24/88
  3. Examination10/24/89
  4. Allowance
  5. Grant
  6. In force

Published on 05/24/1988, 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Irwin Magnetic Systems, Inc.

US

Inventors

E. S. (pessoa física)

US

M. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

36,915 · 04/10/1987

US

915,734 · 10/06/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/24/1989

RPI 992

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Retificação

#15.3

05/24/1994

RPI 1225

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