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Official data from INPI

MEIO DE GRAVACAO OTICO-MAGNETICO E MEIO DE GRAVACAO OTICO-MAGNETICO COM DOIS LADOS

Em ExigênciaInvention Patent

Application data

Number

PI8402317

Type

Invention Patent

Filing

05/17/1983

Publication

04/02/1985

Progress at the INPI

  1. Filing05/17/83
  2. Publication04/02/85
  3. Abandoned01/27/87
  4. Allowance
  5. Grant
  6. In force

The application was abandoned at the INPI. The case ended without a patent and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 08/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG [US]

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Inventors

F. P. (pessoa física)

G. N. (pessoa física)

J. H. (pessoa física)

R. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

08/02/1988

RPI 928

Exigência - art. 36 da LPI

#6.1

05/17/1988

RPI 917

Solicitação de exame técnico

#4.1

01/27/1987

RPI 849

Publicação do pedido de patente

#3.1

04/02/1985

RPI 754

Pedido de patente depositado

#2.1

07/24/1984

RPI 718

11.3

08/21/1990

RPI 1029

Exigência - art. 36 da LPI

#6.1

03/06/1990

RPI 1008

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