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Official data from INPI

PROCESSO DE OBTENÇÃO DE ESTANATOS DE METAL ALCALINO

Arquivada/ExtintaInvention PatentPCT · GB1990001120

Application data

Number

PI9007541

Type

Invention Patent

Filing

07/20/1990

Publication

06/30/1992

PCT

GB1990001120

Progress at the INPI

  1. Filing07/20/90
  2. Publication06/30/92
  3. Examination04/06/93
  4. Allowance08/05/97
  5. Grant06/01/99
  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: 03/27/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

D. R. (pessoa física)

GB

Technical data

IPC Classification

Priority claims

GB

8916673.0 · 07/21/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C01G 19/00; C22B 25/04.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 20/07/2010

01/22/2013

RPI 2194

Concessão da patente

#16.1

06/01/1999

RPI 1482

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

04/06/1993

RPI 1166

Notificação de entrada na fase nacional - PCT

#1.3

06/30/1992

RPI 1126

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