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Official data from INPI

SISTEMA DO TIPO "BALLAST" DE CONTROLE DE GANHO COM FREQUÊNCIA ESTABILIZADA

PublicadaInvention Patent

Application data

Number

PI8500357

Type

Invention Patent

Filing

01/25/1985

Publication

09/09/1986

Progress at the INPI

  1. Filing01/25/85
  2. Publication09/09/86
  3. Examination
  4. Allowance05/28/91
  5. Grant12/31/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/09/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Intent Patents AG

GB

Inventors

J. H. (pessoa física)

US

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/09/1986

RPI 829

Pedido de patente depositado

#2.1

08/06/1985

RPI 772

Carta-patente expirada

#21.1

Patente extinta em 25/01/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

12/31/1991

RPI 1100

Notificação para pagamento de retribuição

#13.1

09/10/1991

RPI 1084

Deferimento

#9.1

05/28/1991

RPI 1069

Exigência - art. 36 da LPI

#6.1

09/25/1990

RPI 1034

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