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Official data from INPI

PROCESSO PARA A SEPARAÇÃO CROMATOGRÁFICA CONTÍNUA DE ISÓTOPOS DE URÂNIO

DeferidaInvention Patent

Application data

Number

PI8406019

Type

Invention Patent

Filing

11/27/1984

Publication

08/27/1985

Progress at the INPI

  1. Filing11/27/84
  2. Publication08/27/85
  3. Examination04/29/86
  4. Allowance12/12/89
  5. Grant06/26/90
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 12/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. K. (pessoa física)

JP

See this company's full portfolio

Inventors

K. T. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

224271/83 · 11/30/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

12/12/1989

RPI 999

Exigência - art. 36 da LPI

#6.1

06/20/1989

RPI 974

6.2

08/02/1988

RPI 928

Solicitação de exame técnico

#4.1

04/29/1986

RPI 810

Publicação do pedido de patente

#3.1

08/27/1985

RPI 775

Pedido de patente depositado

#2.1

02/20/1985

RPI 748

Carta-patente expirada

#21.1

Patente extinta em 27/11/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

04/17/1990

RPI 1014

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