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Official data from INPI

PROCESSO DE FLOTAÇÃO DE ESPUMA PARA CARVÃO BRUTO

ArquivadaInvention PatentPCT · US1989001613

Application data

Number

PI8906917

Type

Invention Patent

Filing

04/17/1989

Publication

12/04/1990

PCT

US1989001613

Progress at the INPI

  1. Filing04/17/89
  2. Publication12/04/90
  3. Examination01/28/92
  4. Allowance10/06/98
  5. Abandoned
  6. In force

The application was allowed on 10/06/1998 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: 04/11/2000. 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

R. K. (pessoa física)

R. H. (pessoa física)

Technical data

IPC Classification

Priority claims

US

183,577 · 04/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

04/11/2000

RPI 1527

Deferimento

#9.1

10/06/1998

RPI 1450

Exigência - art. 36 da LPI

#6.1

06/23/1998

RPI 1435

Exigência - art. 36 da LPI

#6.1

09/16/1997

RPI 1398

Conhecimento de parecer técnico

#7.1

01/21/1997

RPI 1364

Solicitação de exame técnico

#4.1

01/28/1992

RPI 1104

Notificação de entrada na fase nacional - PCT

#1.3

12/04/1990

RPI 1044

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