Official data from INPI

CONTROLE DE VOLUME FISIOLOGICO PARA AUDIO AMPLIFICADORES

ConcedidaInvention Patent

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Application data

Number

PI8000251

Type

Invention Patent

Filing

01/15/1980

Publication

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Progress at the INPI

Filing01/15/80
Publication
Examination08/16/83
Allowance06/11/85
Grant12/31/85
Terminated02/11/92

The patent was granted on 12/31/1985 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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

PHILIPS DO BRASIL LTD

Inventors

R. A. (pessoa física)

T. C. (pessoa física)

Technical data

IPC Classification

H03G 3/32

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

09/24/1985

RPI 779

Deferimento

#9.1

06/11/1985

RPI 764

8.1

01/22/1985

RPI 744

Exigência - art. 36 da LPI

#6.1

01/24/1984

RPI 692

Solicitação de exame técnico

#4.1

08/16/1983

RPI 669

Anuidade - prazo legal encerrado

#18.2

02/11/1992

RPI 1106

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