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Official data from INPI

PROJETO DE REVESTIMENTO REFRATÁRIO DE CONVERSOR LD.

IndeferidaInvention Patent

Application data

Number

PI8106045

Type

Invention Patent

Filing

09/22/1981

Publication

04/26/1983

Progress at the INPI

Under appeal
  1. Filing09/22/81
  2. Publication04/26/83
  3. Examination02/21/84
  4. Refused06/17/86
  5. Grant
  6. In force

The application was refused by the INPI on 06/17/1986. The invention was never patented.

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Latest action published by the INPI: 06/17/1986. 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

06/17/1986

RPI 817

Conhecimento de parecer técnico

#7.1

03/05/1985

RPI 750

Pedido de certificado de adição de invenção

#5.1

07/17/1984

RPI 717

Solicitação de exame técnico

#4.1

02/21/1984

RPI 696

Publicação do pedido de patente

#3.1

04/26/1983

RPI 653

Pedido de patente depositado

#2.1

11/03/1981

RPI 576

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