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

PROCESSO E SISTEMA PARA O TRATAMENTO DE EFLUENTES GASOSOS PARA A REMOÇÃO DE IMPUREZAS DOS MESMOS

Em AnáliseInvention Patent

Application data

Number

PI8502776

Type

Invention Patent

Filing

06/11/1985

Publication

05/27/1986

Progress at the INPI

  1. Filing06/11/85
  2. Publication05/27/86
  3. Examination12/02/86
  4. Allowance06/18/91
  5. Grant12/31/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/02/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hydro-Québec

CA

See this company's full portfolio

Inventors

M. D. (pessoa física)

CA

R. M. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

CA

466.016 · 10/22/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/02/1986

RPI 841

Publicação do pedido de patente

#3.1

05/27/1986

RPI 814

Pedido de patente depositado

#2.1

08/13/1985

RPI 773

Carta-patente expirada

#21.1

Patente extinta em 11/06/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

12/31/1991

RPI 1100

Notificação para pagamento de retribuição

#13.1

10/15/1991

RPI 1089

Deferimento

#9.1

06/18/1991

RPI 1072

Related

Same category

Patent monitoring

Track this patent in real time.

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