Official data from INPI

BOBINA PARA APARELHO DE AQUECIMENTO POR INDUÇÃO ELÉTRICA

PublicadaInvention Patent

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Application data

Number

PI8700186

Type

Invention Patent

Filing

01/16/1987

Publication

12/01/1987

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Progress at the INPI

Filing01/16/87
Publication12/01/87
Examination05/08/90
Allowance06/15/93
Grant04/26/94
Expired07/29/08

The letters patent expired on 07/29/2008: 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: 12/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Trench Electric, A division of Guthrie Canadian Investments Limited

Inventors

P. B. (pessoa física)

Technical data

IPC Classification

H05B 6/02

Priority claims

499,813 · 01/17/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/01/1987

RPI 893

Pedido de patente depositado

#2.1

05/12/1987

RPI 864

Carta-patente expirada

#21.1

Patente extinta em 16/01/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

04/26/1994

RPI 1221

Notificação para pagamento de retribuição

#13.1

10/26/1993

RPI 1195

Deferimento

#9.1

06/15/1993

RPI 1176

Exigência - art. 36 da LPI

#6.1

12/08/1992

RPI 1149

Solicitação de exame técnico

#4.1

05/08/1990

RPI 1017

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