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Official data from INPI

PROCESSO PARA AVALIAÇAO DAS CARACTERISTICAS GRANULOMÉTRICAS DE MATERIAIS GRANULADOS.

Em AnáliseInvention Patent

Application data

Number

PI8303613

Type

Invention Patent

Filing

07/06/1983

Publication

02/20/1985

Progress at the INPI

  1. Filing07/06/83
  2. Publication02/20/85
  3. Examination09/17/85
  4. Refused06/20/89
  5. Grant
  6. In force

The application was refused on 06/20/1989 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: 06/20/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

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Inventors

C. D. (pessoa física)

L. G. (pessoa física)

R. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

131

06/20/1989

RPI 974

Indeferimento

#9.2

01/03/1989

RPI 950

Exigência - art. 36 da LPI

#6.1

01/12/1988

RPI 899

Solicitação de exame técnico

#4.1

09/17/1985

RPI 778

Publicação do pedido de patente

#3.1

02/20/1985

RPI 748

Pedido de patente depositado

#2.1

08/16/1983

RPI 669

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