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Official data from INPI

CORPO DE CARBURETO CEMENTADO SINTERIZADO E PROCESSO PARA PREPARA-LO

ConcedidaInvention Patent

Application data

Number

PI7803700

Type

Invention Patent

Filing

06/09/1977

Publication

-

Progress at the INPI

  1. Filing06/09/77
  2. Publication
  3. Examination
  4. Allowance05/22/84
  5. Grant06/28/88
  6. Expired11/30/93

The letters patent expired on 11/30/1993: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SANDVIK AB

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Inventors

L. J. (pessoa física)

M. H. (pessoa física)

S. U. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

110

11/03/1987

RPI 889

120

06/17/1986

RPI 817

Recurso

#12.1

09/11/1984

RPI 725

Deferimento

#9.1

05/22/1984

RPI 709

Exigência - art. 36 da LPI

#6.1

09/06/1983

RPI 672

Exigência - art. 36 da LPI

#6.1

11/30/1982

RPI 632

Conhecimento de parecer técnico

#7.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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