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Official data from INPI

PROCESSO PARA EXTRACAO DE URANIO DE SEU MINERIO

ConcedidaInvention Patent

Application data

Number

PI7802593

Type

Invention Patent

Filing

05/03/1977

Publication

-

Progress at the INPI

  1. Filing05/03/77
  2. Publication
  3. Examination
  4. Allowance12/07/82
  5. Grant06/28/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

INTEROX CHEMICALS LTD

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Inventors

C. J. (pessoa física)

W. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

Deferimento

#9.1

12/07/1982

RPI 633

Exigência - art. 36 da LPI

#6.1

06/01/1982

RPI 606

6.2

12/15/1981

RPI 582

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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