Official data from INPI

INTERRUPTOR DE CENTELHA, E, INTERRUPTOR ELÉTRICO.

PublicadaInvention Patent

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Application data

Number

PI8701298

Type

Invention Patent

Filing

03/23/1987

Publication

12/29/1987

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Progress at the INPI

Filing03/23/87
Publication12/29/87
Examination05/01/90
Allowance06/15/93
Grant11/30/93
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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Northern Engineering Industries PLC, companhia britânica

Inventors

J. S. (pessoa física)

Technical data

IPC Classification

H01H 83/00

Priority claims

86 07397 · 03/25/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/29/1987

RPI 897

Pedido de patente depositado

#2.1

06/30/1987

RPI 871

Carta-patente expirada

#21.1

Patente extinta em 23/03/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

11/30/1993

RPI 1200

Deferimento

#9.1

06/15/1993

RPI 1176

Exigência - art. 36 da LPI

#6.1

10/27/1992

RPI 1143

Solicitação de exame técnico

#4.1

05/01/1990

RPI 1016

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