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Official data from INPI

INJEÇÃO DE ALCATRÃO DE MADEIRA E/OU MISTURA DE ALCATRÃO DE MADEIRA E FINOS DE CARVÃO VEGETAL PELAS VENTANEIRAS DE ALTO-FORNO.

Em AnáliseInvention Patent

Application data

Number

PI8105890

Type

Invention Patent

Filing

09/15/1981

Publication

04/06/1982

Progress at the INPI

  1. Filing09/15/81
  2. Publication04/06/82
  3. Examination11/23/82
  4. Refused09/12/89
  5. Grant
  6. In force

The application was refused on 09/12/1989 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. B. (pessoa física)

MG, BR

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Inventors

E. B. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

111

09/12/1989

RPI 986

Petição de recurso

#12.2

02/09/1988

RPI 903

15.19

10/13/1987

RPI 886

15.2

08/04/1987

RPI 876

Indeferimento

#9.2

10/14/1986

RPI 834

Conhecimento de parecer técnico

#7.1

09/25/1984

RPI 727

Solicitação de exame técnico

#4.1

11/23/1982

RPI 631

Publicação antecipada

#3.2

04/06/1982

RPI 598

Pedido de patente depositado

#2.1

10/27/1981

RPI 575

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