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Official data from INPI

PROCESSO E APARELHO PARA CONCENTRACAO GRAVIMETRICA A UMIDO DE MINERIO EM PARTICULAS

Concessão AnuladaInvention Patent

Application data

Number

PI7707772

Type

Invention Patent

Filing

11/22/1976

Publication

-

Progress at the INPI

  1. Filing11/22/76
  2. Publication
  3. Examination
  4. Allowance05/10/83
  5. Grant12/27/83
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 03/20/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINERAL DEPOSITS LTD

Inventors

G. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

16.3

03/20/1984

RPI 700

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/10/1983

RPI 655

Exigência - art. 36 da LPI

#6.1

05/25/1982

RPI 605

Exigência - art. 36 da LPI

#6.1

11/17/1981

RPI 578

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

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