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

CONVERSOR DE TENSAO MODULADO POR DURACAO DE PULSOS PARA GERAR UMA TENSAO ALTERNADA PREFERIVELMETE SENOIDAL

ConcedidaInvention Patent
Talk to an expert

Application data

Number

PI8109009

Type

Invention Patent

Filing

12/09/1980

Publication

05/10/1983
View on INPI

Progress at the INPI

  1. Filing12/09/80
  2. Publication05/10/83
  3. Examination03/20/84
  4. Allowance05/14/85
  5. Grant11/26/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 11/26/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ERICSSON TELEFON AB L M [SE]

See this company's full portfolio

Inventors

H. [. (pessoa física)

Technical data

IPC Classification

H02M 7/42H04M 19/02

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/26/1985

RPI 788

Notificação para pagamento de retribuição

#13.1

09/03/1985

RPI 776

Deferimento

#9.1

05/14/1985

RPI 760

Exigência - art. 36 da LPI

#6.1

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

03/20/1984

RPI 700

Republicação - classificação IPC

#15.11

11/01/1983

RPI 680

Notificação de entrada na fase nacional - PCT

#1.3

05/10/1983

RPI 655

Carta-patente expirada

#21.1

Patente extinta em 08/12/96

08/19/2008

RPI 1963

Related

Patent monitoring

Track this patent in real time.

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