Official data from INPI

PROCESSO PARA CONTROLAR A VELOCIDADE DE UM MOTOR A CORRENTE ALTERNADA

Em AnáliseInvention Patent

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Application data

Number

PI7806854

Type

Invention Patent

Filing

10/18/1977

Publication

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Progress at the INPI

Filing10/18/77
Publication
Examination
Allowance01/26/82
Grant
Expired05/24/94

The letters patent expired on 05/24/1994: 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: 06/01/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

TOKYO SHIBAURA ELECTRIC CO

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Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

06/01/1982

RPI 606

Deferimento

#9.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

From the same holder

ENROLAMENTO PARA APARELHO INDUTIVO ELETRICO RESISTOR DE DESCARGA UNIDADE DE TRANSFORMADOR QUADRO DE COMUTACAO ENCOBERTO CENTRO DE CONTROLE DE MOTORES CONJUNTO DE CONTACTO ELETRICO MECANISMO DE OPERACAO DE MANIPULO MECANISMO DE OPERACAO DE PUNHO GIRATORIO E CONJUNTO DE INTERRUPTOR ELETRICO

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