Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Talk to an expert

Application data

Number

PI8103179

Type

Invention Patent

Filing

05/21/1981

Publication

02/09/1982

View on INPI

Progress at the INPI

Filing05/21/81
Publication02/09/82
Examination01/24/84
Allowance10/22/85
Grant06/24/86
Expired10/01/96

The letters patent expired on 10/01/1996: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/24/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. K. (pessoa física)

Inventors

T. Y. (pessoa física)

T. I. (pessoa física)

Technical data

IPC Classification

H04R 1/10

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Deferimento

#9.1

10/22/1985

RPI 783

Solicitação de exame técnico

#4.1

01/24/1984

RPI 692

Publicação do pedido de patente

#3.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

Same category

MICROFONE SEM FIO DOTADO DE CÂMARA DE RESSONÂNCIA.PI9917905 PI9917904 PI9917902 PI9917898 PI9917895 PI9917684 PI9917655

Explore category

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.