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

PROCESSO PARA PURIFICAR, EM FASES LÍQUIDAS, UM HIDRÓXIDO DE METAL ALCALINO

ConcedidaInvention Patent

Application data

Number

PI8307684

Type

Invention Patent

Filing

01/28/1983

Publication

12/11/1984

Progress at the INPI

  1. Filing01/28/83
  2. Publication12/11/84
  3. Examination06/16/87
  4. Allowance04/25/89
  5. Grant11/28/89
  6. Terminated09/05/95

The patent was granted on 11/28/1989 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

D. P. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

08/22/1989

RPI 983

Deferimento

#9.1

04/25/1989

RPI 966

Exigência - art. 36 da LPI

#6.1

09/20/1988

RPI 935

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Notificação de entrada na fase nacional - PCT

#1.3

12/11/1984

RPI 738

Anuidade - prazo legal encerrado

#18.2

09/05/1995

RPI 1292

Patent monitoring

Track this patent in real time.

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