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Official data from INPI

dispositivo de escoamento em posição deitada, de um transformador de corrente de tipo invertido.

ConcedidaInvention Patent

Application data

Number

PI8205450

Type

Invention Patent

Filing

09/16/1982

Publication

08/23/1983

Progress at the INPI

  1. Filing09/16/82
  2. Publication08/23/83
  3. Examination03/19/85
  4. Allowance10/15/85
  5. Grant05/27/86
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 05/27/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alsthom-Atlantique.

FR

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Inventors

D. C. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

81 17 547 · 09/17/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/27/1986

RPI 814

Deferimento

#9.1

10/15/1985

RPI 782

Solicitação de exame técnico

#4.1

03/19/1985

RPI 752

Publicação do pedido de patente

#3.1

08/23/1983

RPI 670

Pedido de patente depositado

#2.1

11/03/1982

RPI 628

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: H01F 40/06; B65D 61/00; F16H 11/00; H01F 27/06.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 16/09/97

07/01/2008

RPI 1956

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