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Official data from INPI

PROCESSO PARA RECUPERACAO DE URANIO A PARTIR DE UMA SOLUCAO DE ATAQUE DE UM MINERIO URANIFERO COM ACIDO SULFURICO

ConcedidaInvention Patent

Application data

Number

PI8108520

Type

Invention Patent

Filing

12/31/1980

Publication

10/19/1982

Progress at the INPI

  1. Filing12/31/80
  2. Publication10/19/82
  3. Examination08/14/84
  4. Allowance05/12/87
  5. Grant10/27/87
  6. Terminated08/07/90

The patent was granted on 10/27/1987 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: 10/27/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UGINE KUHLMANN [FR]

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Inventors

B. D. (pessoa física)

F. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/27/1987

RPI 888

Notificação para pagamento de retribuição

#13.1

09/22/1987

RPI 883

Republicação - classificação IPC

#15.11

05/19/1987

RPI 865

Deferimento

#9.1

05/12/1987

RPI 864

Conhecimento de parecer técnico

#7.1

10/08/1985

RPI 781

Exigência - art. 36 da LPI

#6.1

02/05/1985

RPI 746

Solicitação de exame técnico

#4.1

08/14/1984

RPI 721

Publicação do pedido de patente

#3.1

10/19/1982

RPI 626

Pedido de patente depositado

#2.1

02/24/1982

RPI 592

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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