Official data from INPI

CENTRIFUGA IMPULSORA

Em AnáliseInvention Patent

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Application data

Number

PI7807392

Type

Invention Patent

Filing

11/25/1977

Publication

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Progress at the INPI

Filing11/25/77
Publication
Examination
Allowance03/30/82
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: 01/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ESCHER WYSS AG

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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).

20.4

01/13/1987

RPI 847

Notificação para pagamento de retribuição

#13.1

07/20/1982

RPI 613

Deferimento

#9.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

From the same holder

APOIO DE ROTOR INSTALACAO PARA TRATAMENTO DE SUBSTANCIA DOTADA DE FLUENCIA PROCESSO DE TRATAMENTO DE TIRA DE MATERIAL E DISPOSITIVO PARA EXECUCAO DO MESMO ROLO COM FLEXAO AJUSTAVEL CALANDRA CONSTITUIDA COM ROLOS COMPENSADORES DA FLEXAO DISPOSITIVO LAMINADOR ELEMENTO DE APOIO HIDRAULICO

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