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Official data from INPI

APERFEICOAMENTO EM ALTO-FALANTE

Em AnáliseInvention Patent
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Application data

Number

PI8207106

Type

Invention Patent

Filing

12/08/1982

Publication

07/17/1984
View on INPI

Progress at the INPI

Technical opinion to answer
  1. Filing12/08/82
  2. Publication07/17/84
  3. Examination03/26/85
  4. Allowance
  5. Grant
  6. In force

The INPI issued a technical opinion on patentability. The applicant must respond for examination to continue.

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Latest action published by the INPI: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. N. (pessoa física)

W. C. (pessoa física)

Inventors

C. [. (pessoa física)

N. [. (pessoa física)

Technical data

IPC Classification

H04R 9/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Retificação

#15.3

11/24/1987

RPI 892

Conhecimento de parecer técnico

#7.1

10/29/1986

RPI 836

Pedido de certificado de adição de invenção

#5.1

08/27/1985

RPI 775

Solicitação de exame técnico

#4.1

03/26/1985

RPI 753

Publicação do pedido de patente

#3.1

07/17/1984

RPI 717

Pedido de patente depositado

#2.1

02/01/1983

RPI 641

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