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Official data from INPI

CIRCUITO BIFILAR QUE POSSUI UM SINAL DE CORRENTE CONTÍNUA TOTAL

Em ExigênciaInvention Patent

Application data

Number

PI8406995

Type

Invention Patent

Filing

07/25/1984

Publication

07/02/1985

Progress at the INPI

  1. Filing07/25/84
  2. Publication07/02/85
  3. Examination05/05/87
  4. Allowance06/26/90
  5. Grant12/26/90
  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: 09/05/1989. 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

518.377 · 07/29/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

09/05/1989

RPI 985

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Notificação de entrada na fase nacional - PCT

#1.3

07/02/1985

RPI 767

Carta-patente expirada

#21.1

Patente extinta em 25/07/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

12/26/1990

RPI 1047

Notificação para pagamento de retribuição

#13.1

10/09/1990

RPI 1036

Deferimento

#9.1

06/26/1990

RPI 1024

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