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Official data from INPI

DIAFRAGMA À BASE DE ÓXIDO DE NÍQUEL PARA ELETRÓLISE ALCALINA DA ÁGUA E PROCESSO PARA A CONFECÇÃO DO MESMO

Em AnáliseInvention Patent

Application data

Number

PI8402480

Type

Invention Patent

Filing

05/23/1984

Publication

04/02/1985

Progress at the INPI

  1. Filing05/23/84
  2. Publication04/02/85
  3. Examination08/20/85
  4. Allowance
  5. Grant02/06/90
  6. Terminated06/13/95

The patent was granted on 02/06/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. H. (pessoa física)

DE

Inventors

J. D. (pessoa física)

DE

P. M. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 33 18 758.4-4 · 05/24/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

09/19/1989

RPI 987

Exigência - art. 36 da LPI

#6.1

11/16/1988

RPI 943

6.2

06/28/1988

RPI 923

Solicitação de exame técnico

#4.1

08/20/1985

RPI 774

Publicação do pedido de patente

#3.1

04/02/1985

RPI 754

Pedido de patente depositado

#2.1

08/07/1984

RPI 720

Anuidade - prazo legal encerrado

#18.2

06/13/1995

RPI 1280

Concessão da patente

#16.1

02/06/1990

RPI 1005

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