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Official data from INPI

Processo para a purificação de uma solução aquosa impura de peróxido de hidrogênio

Arquivada/ExtintaInvention PatentPCT · GB1990001102

Application data

Number

PI9007560

Type

Invention Patent

Filing

07/18/1990

Publication

06/23/1992

PCT

GB1990001102

Progress at the INPI

  1. Filing07/18/90
  2. Publication06/23/92
  3. Examination07/20/93
  4. Allowance08/05/97
  5. Grant07/28/98
  6. Expired01/22/13

The letters patent expired on 01/22/2013: 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: 01/22/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Interox Chemicals Limited

GB

Inventors

J. W. (pessoa física)

US

R. C. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8916934.6 · 07/25/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 18/07/2010

01/22/2013

RPI 2194

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

08/05/1997

RPI 1392

Exigência - art. 36 da LPI

#6.1

10/22/1996

RPI 1351

Solicitação de exame técnico

#4.1

07/20/1993

RPI 1181

Notificação de entrada na fase nacional - PCT

#1.3

06/23/1992

RPI 1125

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