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Official data from INPI

PROCESSO PARA SEPARAR PARTÍCULAS DE MINERAIS DE CARVÃO DE UM LÍQUIDO DE CARVÃO EM QUE AS PARTÍCULAS ESTÃO SUSPENSAS .

IndeferidaInvention Patent

Application data

Number

PI7906432

Type

Invention Patent

Filing

10/05/1979

Publication

-

Progress at the INPI

Under appeal
  1. Filing10/05/79
  2. Publication
  3. Examination03/09/82
  4. Refused10/02/84
  5. Grant
  6. In force

The application was refused by the INPI on 10/02/1984. The invention was never patented.

Talk to a specialist

Latest action published by the INPI: 10/02/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Gulf Research & Development Company

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Inventors

No inventors listed.

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

10/02/1984

RPI 728

Republicação - classificação IPC

#15.11

05/02/1984

RPI 706

Republicação - classificação IPC

#15.11

02/07/1984

RPI 694

Conhecimento de parecer técnico

#7.1

10/11/1983

RPI 677

Solicitação de exame técnico

#4.1

03/09/1982

RPI 594

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