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Official data from INPI

APARELHO PARA AJUSTE DE IMPEDÂNCIA EM UMA LINHA DE CORRENTE ALTERNADA

Arquivada/ExtintaInvention Patent

Application data

Number

PI8705390

Type

Invention Patent

Filing

01/22/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing01/22/87
  2. Publication12/22/87
  3. Examination01/02/90
  4. Allowance08/24/93
  5. Grant04/26/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 12/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

J. V. (pessoa física)

US

S. A. (pessoa física)

DE

Inventors

J. V. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

821,196 · 01/22/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 22/01/2002

07/29/2008

RPI 1960

Transferência deferida

#25.1

Transferido de: John J. Vithayathil

07/17/2001

RPI 1593

Concessão da patente

#16.1

04/26/1994

RPI 1221

Deferimento

#9.1

08/24/1993

RPI 1186

Exigência - art. 36 da LPI

#6.1

02/09/1993

RPI 1158

Solicitação de exame técnico

#4.1

01/02/1990

RPI 1000

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