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Official data from INPI

CIRCUITO PARA MEDIR UMA REATÂNCIA VARIÁVEL

ConcedidaInvention Patent

Application data

Number

PI8406844

Type

Invention Patent

Filing

04/05/1984

Publication

03/19/1985

Progress at the INPI

  1. Filing04/05/84
  2. Publication03/19/85
  3. Examination07/28/87
  4. Allowance05/02/89
  5. Grant10/24/89
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rosemount Inc.

US

See this company's full portfolio

Inventors

R. F. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

489,856 · 04/29/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/02/1989

RPI 967

Exigência - art. 36 da LPI

#6.1

08/30/1988

RPI 932

Solicitação de exame técnico

#4.1

07/28/1987

RPI 875

Notificação de entrada na fase nacional - PCT

#1.3

03/19/1985

RPI 752

Carta-patente expirada

#21.1

Patente extinta em 05/04/99

07/08/2008

RPI 1957

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