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Official data from INPI

SEPARADORES MICROPOROSOS PARA CELULA ELETROLITICA,PROCESSO DE SUA PRODUCAO,E SUA APLICACAO

Em AnáliseInvention Patent

Application data

Number

PI7907170

Type

Invention Patent

Filing

11/03/1978

Publication

-

Progress at the INPI

  1. Filing11/03/78
  2. Publication
  3. Examination
  4. Allowance06/14/83
  5. Grant02/28/84
  6. Terminated06/14/88

The patent was granted on 02/28/1984 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOOKER CHEMICALS PLASTICS CORP

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Inventors

C. E. (pessoa física)

L. C. (pessoa física)

S. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

16.3

05/15/1984

RPI 708

Concessão da patente

#16.1

02/28/1984

RPI 697

14.4

11/01/1983

RPI 680

Notificação para pagamento de retribuição

#13.1

10/04/1983

RPI 676

Deferimento

#9.1

06/14/1983

RPI 660

15.0

06/29/1982

RPI 610

Deferimento

#9.1

06/22/1982

RPI 609

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