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Official data from INPI

PROCESSO E APARELHO PARA PREPARAÇÃO DE PARTÍCULAS CARBONÁCEAS ENXUGADAS

IndeferidaInvention Patent

Application data

Number

PI7700747

Type

Invention Patent

Filing

02/08/1977

Publication

-

Progress at the INPI

Under appeal
  1. Filing02/08/77
  2. Publication
  3. Examination
  4. Refused12/28/82
  5. Grant
  6. In force

The application was refused by the INPI on 12/28/1982. The invention was never patented.

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Latest action published by the INPI: 12/28/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

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Inventors

No inventors listed.

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

12/28/1982

RPI 636

Conhecimento de parecer técnico

#7.1

03/16/1982

RPI 595

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C01B 31/00.

03/27/2018

RPI 2464

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