Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

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Application data

Number

PI7806488

Type

Invention Patent

Filing

09/29/1978

Publication

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Progress at the INPI

Filing09/29/78
Publication
Examination
Allowance03/09/82
Grant
Terminated04/27/93

The patent was granted and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/29/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hitachi, Ltda

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

06/29/1982

RPI 610

Deferimento

#9.1

03/09/1982

RPI 594

15.0

10/06/1981

RPI 572

Anuidade - prazo legal encerrado

#18.2

04/27/1993

RPI 1169

From the same holder

APARELHAMENTO DE COMANDO ELÉTRICO DISJUNTOR A AR SISTEMA E APARELHO DE APOIO DE ADMINISTRAÇÃO DE OPERAÇÃO, E, MÉTODO DE COMPUTAR PLANO DE OPERAÇÃO DE TREM

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