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Official data from INPI

PROCESSO PARA A RECUPERAÇÃO DE VALORES MINERAIS POR FLOTAÇÃO DE ESPUMA REVERSA

ArquivadaInvention Patent

Application data

Number

PI9102780

Type

Invention Patent

Filing

06/25/1991

Publication

02/04/1992

Progress at the INPI

  1. Filing06/25/91
  2. Publication02/04/92
  3. Examination05/03/94
  4. Allowance11/07/00
  5. Abandoned
  6. In force

The application was allowed on 11/07/2000 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 11/27/2001. 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

Technical data

IPC Classification

Priority claims

US

546.167 · 06/28/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

Arquivamento - Art. 38 § 2º da LPI

11/27/2001

RPI 1612

Deferimento

#9.1

11/07/2000

RPI 1557

Exigência - art. 36 da LPI

#6.1

12/01/1998

RPI 1456

Solicitação de exame técnico

#4.1

05/03/1994

RPI 1222

Publicação do pedido de patente

#3.1

02/04/1992

RPI 1105

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