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Official data from INPI

COMPOSIÇÃO COLETORA PARA FLOTAÇÃO DE MINERAIS E PROCESSO PARA RECUPERAR MINERAIS QUE CONTÊM METAL

Em AnáliseInvention PatentPCT · US1986000342

Application data

Number

PI8607004

Type

Invention Patent

Filing

02/18/1986

Publication

12/01/1987

PCT

US1986000342

Progress at the INPI

  1. Filing02/18/86
  2. Publication12/01/87
  3. Examination03/01/88
  4. Allowance05/11/93
  5. Grant09/28/93
  6. Terminated12/31/96

The patent was granted on 09/28/1993 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: 03/01/1988. 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

IPC Classification

Priority claims

US

802.882 · 11/29/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/01/1988

RPI 906

Notificação de entrada na fase nacional - PCT

#1.3

12/01/1987

RPI 893

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Concessão da patente

#16.1

09/28/1993

RPI 1191

Deferimento

#9.1

05/11/1993

RPI 1171

Exigência - art. 36 da LPI

#6.1

10/27/1992

RPI 1143

Exigência - art. 36 da LPI

#6.1

04/02/1991

RPI 1061

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