(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

Célula de redução eletrolítica e processo para a operação da mesma.

ConcedidaInvention Patent

Application data

Number

PI8303236

Type

Invention Patent

Filing

06/17/1919

Publication

01/31/1984

Progress at the INPI

  1. Filing06/17/19
  2. Publication01/31/84
  3. Examination08/13/85
  4. Allowance06/21/88
  5. Grant01/10/89
  6. Terminated04/09/96

The patent was granted on 01/10/1989 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: 01/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

M. P. (pessoa física)

Technical data

IPC Classification

Priority claims

GB

827711 · 06/18/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/10/1989

RPI 951

Notificação para pagamento de retribuição

#13.1

10/25/1988

RPI 940

Republicação - classificação IPC

#15.11

09/27/1988

RPI 936

Deferimento

#9.1

06/21/1988

RPI 922

6.2

02/24/1987

RPI 853

Solicitação de exame técnico

#4.1

08/13/1985

RPI 773

Publicação do pedido de patente

#3.1

01/31/1984

RPI 693

Pedido de patente depositado

#2.1

08/02/1983

RPI 667

Anuidade - prazo legal encerrado

#18.2

04/09/1996

RPI 1323

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.