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Official data from INPI

COMPOSIÇÃO CONSTITUÍDA POR UM ÓXIDO CONTENDO PELO MENOS DOIS METAIS; PASTA AQUOSA; PROCESSO PARA SUA PREPARAÇÃO; COMPOSIÇÃO L M A D DE ÓXIDO DE METAL SUPERCONDUTORA; E COMPOSIÇÃO LIVRE DE SUBSTÂNCIAS ORGÂNICAS

PublicadaInvention Patent

Application data

Number

PI8804616

Type

Invention Patent

Filing

09/08/1988

Publication

04/18/1989

Progress at the INPI

  1. Filing09/08/88
  2. Publication04/18/89
  3. Examination07/02/91
  4. Allowance
  5. Grant
  6. In force

Published on 04/18/1989, 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: 04/18/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W R Grace & Co -Conn

US

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Inventors

J. R. (pessoa física)

N. S. (pessoa física)

W. P. (pessoa física)

Technical data

IPC Classification

Priority claims

US

095.083 · 09/11/1987

US

155.340 · 02/12/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/18/1989

RPI 965

Pedido de patente depositado

#2.1

02/08/1989

RPI 955

Retificação

#15.3

06/14/1994

RPI 1228

Solicitação de exame técnico

#4.1

07/02/1991

RPI 1074

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