Official data from INPI

PROCESSO PARA O TINGIMENTO ELETROLITICO DE SAL DE METAL DE ALUMINIO

ConcedidaInvention Patent

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Application data

Number

PI7906756

Type

Invention Patent

Filing

11/18/1978

Publication

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Progress at the INPI

Filing11/18/78
Publication
Examination
Allowance11/23/82
Grant06/28/83
Expired04/25/95

The letters patent expired on 04/25/1995: 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: 06/28/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GOLDSCHMIDT AG TH [DE]

Inventors

R. [. (pessoa física)

Technical data

IPC Classification

C25D 11/12

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

04/05/1983

RPI 650

Deferimento

#9.1

11/23/1982

RPI 631

15.0

04/13/1982

RPI 599

6.2

03/16/1982

RPI 595

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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