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Official data from INPI

RESINA DE TROCA IONICA E PROCESSO PARA SUA PREPARACAO;MEMBRANA PERM-SELETIVA E PROCESSO PARA PREPARACAO DE MESMA

ConcedidaInvention Patent
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Application data

Number

PI8100512

Type

Invention Patent

Filing

01/29/1981

Publication

09/28/1982
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Progress at the INPI

  1. Filing01/29/81
  2. Publication09/28/82
  3. Examination11/13/84
  4. Allowance08/26/86
  5. Grant06/02/87
  6. Terminated08/23/94

The patent was granted on 06/02/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/02/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ICI AUSTRALIA LTD [AU]

Inventors

M. M. (pessoa física)

M. F. (pessoa física)

Technical data

IPC Classification

C08F 259/08C08J 5/22C25B 13/08

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/02/1987

RPI 867

Notificação para pagamento de retribuição

#13.1

12/09/1986

RPI 842

Deferimento

#9.1

08/26/1986

RPI 827

Exigência - art. 36 da LPI

#6.1

02/04/1986

RPI 798

Exigência - art. 36 da LPI

#6.1

06/04/1985

RPI 763

Solicitação de exame técnico

#4.1

11/13/1984

RPI 734

Publicação do pedido de patente

#3.1

09/28/1982

RPI 623

Anuidade - prazo legal encerrado

#18.2

08/23/1994

RPI 1238

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