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Official data from INPI

UMA ESTRUTURA COMPOSTA DE MEMBRANA/ELETRODO TENDO LEITOS INTERCONECTADOS DE PARTÍCULAS CATALITICAMENTE ATIVAS E UM MÉTODO PARA A PREPARAÇÃO DE UMA ESTRUTURA COMPOSTA APERFEIÇOADA DE MEMBRANA/ELETRODO

PublicadaInvention Patent

Application data

Number

PI8707207

Type

Invention Patent

Filing

12/28/1987

Publication

07/25/1989

Progress at the INPI

  1. Filing12/28/87
  2. Publication07/25/89
  3. Examination09/17/91
  4. Allowance
  5. Grant
  6. In force

Published on 07/25/1989, 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

J. M. (pessoa física)

US

R. D. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

07/25/1989

RPI 979

Pedido de patente depositado

#2.1

04/05/1988

RPI 911

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C25B 11/20.

03/27/2018

RPI 2464

Retificação

#15.3

05/25/1993

RPI 1173

Solicitação de exame técnico

#4.1

09/17/1991

RPI 1085

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