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Official data from INPI

APERFEIÇOAMENTO DE PROCESSO PARA RECUPERAÇÃO DE URÂNIO EM ÁCIDO FOSFÓRICO VIA ÚMIDA

Em AnáliseInvention Patent

Application data

Number

PI8502265

Type

Invention Patent

Filing

05/14/1985

Publication

12/23/1986

Progress at the INPI

  1. Filing05/14/85
  2. Publication12/23/86
  3. Examination12/27/88
  4. Allowance08/04/92
  5. Grant04/27/93
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 12/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Industrias Nucleares do Brasil S/A - INB

RJ, BR

Inventors

J. N. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/27/1988

RPI 949

Publicação do pedido de patente

#3.1

12/23/1986

RPI 844

Pedido de patente depositado

#2.1

07/16/1985

RPI 769

Carta-patente expirada

#21.1

Patente extinta em 14/05/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

01/12/1993

RPI 1154

Deferimento

#9.1

08/04/1992

RPI 1131

Exigência - art. 36 da LPI

#6.1

08/20/1991

RPI 1081

14.4

03/19/1991

RPI 1059

15.5

08/07/1990

RPI 1027

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