Official data from INPI

ACOPLADOR DIRECIONAL PARA TRANSMISSAO DUPLEX

ConcedidaInvention Patent

Talk to an expert

Application data

Number

PI7807005

Type

Invention Patent

Filing

10/24/1977

Publication

View on INPI

Progress at the INPI

Filing10/24/77
Publication
Examination
Allowance09/21/82
Grant05/31/83
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.

Talk to a specialist

Latest action published by the INPI: 05/31/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. A. (pessoa física)

Inventors

B. H. (pessoa física)

R. B. (pessoa física)

Technical data

IPC Classification

H04B 1/10 H04B 3/20

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/31/1983

RPI 658

Notificação para pagamento de retribuição

#13.1

01/25/1983

RPI 640

Deferimento

#9.1

09/21/1982

RPI 622

15.0

05/11/1982

RPI 603

Exigência - art. 36 da LPI

#6.1

03/09/1982

RPI 594

Carta-patente expirada

#21.1

05/24/1994

RPI 1225

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.