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Official data from INPI

CÉLULA ELETROLÍTICA DO TIPO FILTRO PRENSA

ConcedidaInvention Patent

Application data

Number

PI8103008

Type

Invention Patent

Filing

05/14/1981

Publication

02/09/1982

Progress at the INPI

  1. Filing05/14/81
  2. Publication02/09/82
  3. Examination05/18/82
  4. Allowance05/28/85
  5. Grant11/26/85
  6. Terminated08/30/94

The patent was granted on 11/26/1985 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

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Inventors

B. T. (pessoa física)

D. B. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

8016023 · 05/15/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

09/17/1985

RPI 778

Deferimento

#9.1

05/28/1985

RPI 762

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

05/18/1982

RPI 604

Publicação do pedido de patente

#3.1

02/09/1982

RPI 590

Anuidade - prazo legal encerrado

#18.2

08/30/1994

RPI 1239

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