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

PROCESSO PARA RECUPERAR VALORES DE METAL A PARTIR DE UM MINERIO DE METAL

Em AnáliseInvention Patent

Application data

Number

PI8504419

Type

Invention Patent

Filing

09/12/1985

Publication

07/15/1986

Progress at the INPI

  1. Filing09/12/85
  2. Publication07/15/86
  3. Examination08/16/88
  4. Allowance03/07/95
  5. Grant09/26/95
  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: 08/16/1988. 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

R. K. (pessoa física)

US

R. H. (pessoa física)

US

Technical data

Priority claims

US

649890 · 09/13/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

08/16/1988

RPI 930

Publicação do pedido de patente

#3.1

07/15/1986

RPI 821

Pedido de patente depositado

#2.1

11/19/1985

RPI 787

Carta-patente expirada

#21.1

Patente extinta em 12/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

09/26/1995

RPI 1295

Deferimento

#9.1

03/07/1995

RPI 1266

Exigência - art. 36 da LPI

#6.1

08/16/1994

RPI 1237

Exigência - art. 36 da LPI

#6.1

05/11/1993

RPI 1171

Conhecimento de parecer técnico

#7.1

10/13/1992

RPI 1141

Conhecimento de parecer técnico

#7.1

11/26/1991

RPI 1095

Patent monitoring

Track this patent in real time.

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