Official data from INPI

APERFEICOAMENTO EM FORNO A ARCO ELETRICO DE CORRENTE CONTINUA

Em AnáliseInvention Patent

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Application data

Number

PI7600165

Type

Invention Patent

Filing

01/14/1975

Publication

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Progress at the INPI

Filing01/14/75
Publication
Examination
Allowance
Grant
Expired07/27/93

The letters patent expired on 07/27/1993: 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: 09/23/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ASEA AB

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Inventors

S. S. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

09/23/1986

RPI 831

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

From the same holder

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