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Official data from INPI

MASSA REFRATÁRIA BÁSICA PARA PROJEÇAO EM MUNHOES DE CONVERSORES LD.

IndeferidaInvention Patent

Application data

Number

PI8200128

Type

Invention Patent

Filing

01/12/1982

Publication

09/13/1983

Progress at the INPI

Under appeal
  1. Filing01/12/82
  2. Publication09/13/83
  3. Examination03/05/85
  4. Refused06/23/87
  5. Grant
  6. In force

The application was refused by the INPI on 06/23/1987. The invention was never patented.

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Latest action published by the INPI: 06/23/1987. 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. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

06/23/1987

RPI 870

Conhecimento de parecer técnico

#7.1

09/30/1986

RPI 832

Solicitação de exame técnico

#4.1

03/05/1985

RPI 750

Publicação do pedido de patente

#3.1

09/13/1983

RPI 673

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