Official data from INPI

APARELHO DE AQUECIMENTO SEM CONTATO PARA DELGADOS FILAMENTOS

Arquivada/ExtintaInvention PatentPCT · GB1989000505

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Application data

Number

PI8907437

Type

Invention Patent

Filing

05/11/1989

Publication

04/02/1991

PCT

GB1989000505

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Progress at the INPI

Filing05/11/89
Publication04/02/91
Examination09/10/91
Allowance03/01/95
Grant08/29/95
Expired12/29/09

The letters patent expired on 12/29/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. S. (pessoa física)

The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great

Inventors

M. H. (pessoa física)

P. S. (pessoa física)

Technical data

IPC Classification

H05B 6/02

Priority claims

8811893.0 · 05/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 11/05/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

08/29/1995

RPI 1291

Deferimento

#9.1

03/01/1995

RPI 1265

Solicitação de exame técnico

#4.1

09/10/1991

RPI 1084

Notificação de entrada na fase nacional - PCT

#1.3

04/02/1991

RPI 1061

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