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Official data from INPI

PROCESSO PARA A RECUPERAÇÃO DE VALORES MINERAIS POR FLOTAÇÃO COM ESPUMA

IndeferidaInvention Patent

Application data

Number

PI9002232

Type

Invention Patent

Filing

05/11/1990

Publication

08/13/1991

Progress at the INPI

Under appeal
  1. Filing05/11/90
  2. Publication08/13/91
  3. Examination10/05/93
  4. Refused04/18/00
  5. Grant
  6. In force

The application was refused by the INPI on 04/18/2000. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 04/18/2000. 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

B. F. (pessoa física)

D. L. (pessoa física)

R. K. (pessoa física)

R. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

Indeferido com base no Artigo 37, combinado com o Artigo 8º da LPI 9279 de 14/05/96.

04/18/2000

RPI 1528

Conhecimento de parecer técnico

#7.1

08/10/1999

RPI 1492

Solicitação de exame técnico

#4.1

10/05/1993

RPI 1192

Publicação do pedido de patente

#3.1

08/13/1991

RPI 1080

Pedido de patente depositado

#2.1

09/25/1990

RPI 1034

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