(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

Sistema de alto-falante

PublicadaInvention Patent

Application data

Number

PI8901979

Type

Invention Patent

Filing

04/27/1989

Publication

12/05/1989

Progress at the INPI

  1. Filing04/27/89
  2. Publication12/05/89
  3. Examination10/30/90
  4. Allowance05/27/97
  5. Grant07/28/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Matsushita Electric Industrial Co., Ltd

JP

See this company's full portfolio

Inventors

K. S. (pessoa física)

JP

S. S. (pessoa física)

JP

T. T. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

63-106355 · 04/28/1988

JP

63-109343 · 05/02/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/05/1989

RPI 998

Pedido de patente depositado

#2.1

06/06/1989

RPI 972

Carta-patente expirada

#21.1

Patente extinta em 27/04/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

05/27/1997

RPI 1382

Exigência - art. 36 da LPI

#6.1

11/26/1996

RPI 1356

Solicitação de exame técnico

#4.1

10/30/1990

RPI 1039

Patent monitoring

Track this patent in real time.

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