Official data from INPI

TRANSDUTOR ELETROACÚSTICA COM DIAFRAGMA E ESBOÇO PARA MESMO.

ConcedidaInvention Patent

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Application data

Number

PI8307405

Type

Invention Patent

Filing

06/16/1983

Publication

07/17/1984

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Progress at the INPI

Filing06/16/83
Publication07/17/84
Examination03/25/86
Allowance10/13/87
Grant10/25/88
Terminated10/02/90

The patent was granted on 10/25/1988 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. L. (pessoa física)

Inventors

L. [. (pessoa física)

S. [. (pessoa física)

Technical data

IPC Classification

H04R 7/18

Priority claims

389.423 · 06/17/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1988

RPI 940

110

07/05/1988

RPI 924

Recurso

#12.1

02/09/1988

RPI 903

Deferimento

#9.1

10/13/1987

RPI 886

Exigência - art. 36 da LPI

#6.1

01/13/1987

RPI 847

Solicitação de exame técnico

#4.1

03/25/1986

RPI 805

Republicação - classificação IPC

#15.11

05/28/1985

RPI 762

Retificação da notificação da fase nacional - PCT

#1.3.1

10/02/1984

RPI 728

Notificação de entrada na fase nacional - PCT

#1.3

07/17/1984

RPI 717

Anuidade - prazo legal encerrado

#18.2

10/02/1990

RPI 1035

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