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Official data from INPI

Aperfeiçoamento em um processo de recuperação de urânio (VI) contido em um ácido fosfórico impuro e aplicação do processo.

ConcedidaInvention Patent

Application data

Number

PI8004508

Type

Invention Patent

Filing

07/18/1980

Publication

-

Progress at the INPI

  1. Filing07/18/80
  2. Publication
  3. Examination06/07/83
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Terminated09/25/90

The patent was granted on 05/28/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

F. D. (pessoa física)

L. A. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

79 18781 · 07/20/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

03/26/1985

RPI 753

Deferimento

#9.1

11/13/1984

RPI 734

Republicação - classificação IPC

#15.11

03/13/1984

RPI 699

Exigência - art. 36 da LPI

#6.1

01/17/1984

RPI 691

Solicitação de exame técnico

#4.1

06/07/1983

RPI 659

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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