Official data from INPI

TRANSFORMADOR

Em AnáliseInvention Patent

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Application data

Number

PI7701543

Type

Invention Patent

Filing

03/14/1977

Publication

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Progress at the INPI

Filing03/14/77
Publication
Examination
Allowance
Grant07/27/82
Terminated12/08/87

The patent was granted on 07/27/1982 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: 12/08/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. A. (pessoa física)

Inventors

L. W. (pessoa física)

Technical data

IPC Classification

H01F 41/12

Priority claims

7603261-4 · 03/15/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/08/1987

RPI 894

Concessão da patente

#16.1

07/27/1982

RPI 614

Notificação para pagamento de retribuição

#13.1

12/15/1981

RPI 582

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