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Official data from INPI

UNIDADE DE PROTECAO CONTRA (FENOMENOS TRANSIENTES CONTROLADA POR TENSAO

ConcedidaInvention Patent

Application data

Number

PI8109022

Type

Invention Patent

Filing

12/23/1980

Publication

04/12/1983

Progress at the INPI

  1. Filing12/23/80
  2. Publication04/12/83
  3. Examination07/17/84
  4. Allowance07/09/85
  5. Grant12/31/85
  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: 12/31/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ERICSSON TELEFON AB L M [SE]

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Inventors

G. [. (pessoa física)

H. [. (pessoa física)

H. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

01/02/1985

RPI 741

Solicitação de exame técnico

#4.1

07/17/1984

RPI 717

Solicitação de exame não realizada

#4.2

04/10/1984

RPI 703

Notificação de entrada na fase nacional - PCT

#1.3

04/12/1983

RPI 651

Carta-patente expirada

#21.1

Patente extinta em 23/12/96

08/19/2008

RPI 1963

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