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Official data from INPI

PROJETO DE REVESTIMENTO REFRATÁRIO DE CUBAS CIRCULARES DE FORNOS DE CALCINAÇAO TIPO VERTICAL.

IndeferidaInvention Patent

Application data

Number

PI8107406

Type

Invention Patent

Filing

11/16/1981

Publication

06/21/1983

Progress at the INPI

Under appeal
  1. Filing11/16/81
  2. Publication06/21/83
  3. Examination02/26/85
  4. Refused06/02/87
  5. Grant
  6. In force

The application was refused by the INPI on 06/02/1987. The invention was never patented.

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Latest action published by the INPI: 06/02/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

See this company's full portfolio

Inventors

C. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

06/02/1987

RPI 867

Republicação - classificação IPC

#15.11

05/19/1987

RPI 865

Conhecimento de parecer técnico

#7.1

02/18/1986

RPI 800

Pedido de certificado de adição de invenção

#5.1

07/23/1985

RPI 770

Solicitação de exame técnico

#4.1

02/26/1985

RPI 749

Publicação do pedido de patente

#3.1

06/21/1983

RPI 661

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

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