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Official data from INPI

Processo de produção de pastilhas de metal duro composto por carbeto de nióbio e cobalto a partir de pentóxido de nióbio comercialmente puro.

IndeferidaInvention Patent

Application data

Number

PI8007421

Type

Invention Patent

Filing

11/13/1980

Publication

07/20/1982

Progress at the INPI

Under appeal
  1. Filing11/13/80
  2. Publication07/20/82
  3. Examination09/18/84
  4. Refused06/24/86
  5. Grant
  6. In force

The application was refused by the INPI on 06/24/1986. The invention was never patented.

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Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. U. (pessoa física)

F. B. (pessoa física)

J. T. (pessoa física)

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Inventors

B. L. (pessoa física)

S. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Indeferimento

#9.2

06/24/1986

RPI 818

Conhecimento de parecer técnico

#7.1

06/04/1985

RPI 763

Pedido de certificado de adição de invenção

#5.1

02/12/1985

RPI 747

Solicitação de exame técnico

#4.1

09/18/1984

RPI 726

Publicação do pedido de patente

#3.1

07/20/1982

RPI 613

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