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Official data from INPI

APERFEICOAMENTO EM PROCESSO PARA A EXTRACAO DO TEOR METALICO DE SOLUCOES AQUOSAS DE SAIS METALICOS E COMPOSICOES FORTEMENTE EXTRATORAS DE METAIS

Em AnáliseInvention Patent

Application data

Number

PI7700487

Type

Invention Patent

Filing

01/30/1976

Publication

-

Progress at the INPI

  1. Filing01/30/76
  2. Publication
  3. Examination
  4. Allowance04/27/82
  5. Grant10/26/82
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 08/12/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ICI LTD

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Inventors

D. R. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

08/12/1986

RPI 825

Concessão da patente

#16.1

10/26/1982

RPI 627

Notificação para pagamento de retribuição

#13.1

08/31/1982

RPI 619

Deferimento

#9.1

04/27/1982

RPI 601

15.0

10/20/1981

RPI 574

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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