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Official data from INPI

PROCESSO PARA LIMPAR SÓLIDOS CARBONÁCEOS DE DENSIDADES VARIÁVEIS.

Em AnáliseInvention Patent

Application data

Number

PI8004312

Type

Invention Patent

Filing

07/11/1980

Publication

-

Progress at the INPI

  1. Filing07/11/80
  2. Publication
  3. Examination08/09/83
  4. Refused01/13/87
  5. Grant
  6. In force

The application was refused on 01/13/1987 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 01/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company

US

See this company's full portfolio

Inventors

G. R. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Priority claims

US

057.250 · 07/13/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

130

01/13/1987

RPI 847

Arquivamento - Art. 36 §1° da LPI

#11.2

04/08/1986

RPI 807

8.1

09/03/1985

RPI 776

Recurso

#12.1

09/11/1984

RPI 725

Deferimento

#9.1

06/05/1984

RPI 711

Pedido de certificado de adição de invenção

#5.1

12/27/1983

RPI 688

Solicitação de exame técnico

#4.1

08/09/1983

RPI 668

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