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Official data from INPI

PROCESSO PARA PREPARACAO DE CORPO DE DIAMANTE POLICRISTALINO E CORPO DE DIAMANTE POLICRISTALINO OBTIDO PELO DITO PROCESSO

ConcedidaInvention Patent

Application data

Number

PI7806952

Type

Invention Patent

Filing

10/21/1977

Publication

-

Progress at the INPI

  1. Filing10/21/77
  2. Publication
  3. Examination
  4. Allowance03/17/87
  5. Grant08/25/87
  6. Expired05/24/94

The letters patent expired on 05/24/1994: 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

G. E. (pessoa física)

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Inventors

D. R. (pessoa física)

L. M. (pessoa física)

S. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

03/17/1987

RPI 856

Exigência - art. 36 da LPI

#6.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Exigência - art. 36 da LPI

#6.1

05/31/1983

RPI 658

Exigência - art. 36 da LPI

#6.1

08/31/1982

RPI 619

6.2

12/29/1981

RPI 584

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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