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Official data from INPI

CONJUNTO PARA SUPORTE DE MEMBRANA PARA CELULA ELETRONICA E METODO DE FABRICACAO DA MESMA

Em AnáliseInvention Patent

Application data

Number

PI8104379

Type

Invention Patent

Filing

07/07/1981

Publication

02/16/1983

Progress at the INPI

  1. Filing07/07/81
  2. Publication02/16/83
  3. Examination09/20/83
  4. Allowance07/14/87
  5. Grant04/26/88
  6. Terminated07/12/88

The patent was granted on 04/26/1988 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO [US]

See this company's full portfolio

Inventors

K. R. (pessoa física)

M. I. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

07/12/1988

RPI 925

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

09/16/1986

RPI 830

Exigência - art. 36 da LPI

#6.1

06/11/1985

RPI 764

3.4

12/06/1983

RPI 685

Solicitação de exame técnico

#4.1

09/20/1983

RPI 674

3.4

09/13/1983

RPI 673

3.4

05/31/1983

RPI 658

Publicação do pedido de patente

#3.1

02/16/1983

RPI 643

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