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Official data from INPI

PROCESSO PARA CONTROLAR A TENSÃO DE CONTROLE DE UM INVERSOR TRIFÁSICO QUE ALIMENTA UM MOTOR DE CORRENTE ALTERNADA E DISPOSITIVO PARA APLICAR O PROCESSO.

Prazo de SigiloInvention Patent

Application data

Number

PI8701226

Type

Invention Patent

Filing

03/18/1987

Publication

-

Progress at the INPI

  1. Filing03/18/87
  2. Publication
  3. Examination05/01/90
  4. Allowance06/08/93
  5. Grant10/26/93
  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: 06/23/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Kone Elevator GmbH

CH

See this company's full portfolio

Inventors

H. H. (pessoa física)

FI

M. K. (pessoa física)

FI

P. H. (pessoa física)

FI

P. N. (pessoa física)

FI

U. S. (pessoa física)

FI

Technical data

IPC Classification

Priority claims

FI

861143 · 03/19/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

06/23/1987

RPI 870

Carta-patente expirada

#21.1

Patente extinta em 18/03/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/26/1993

RPI 1195

Deferimento

#9.1

06/08/1993

RPI 1175

Solicitação de exame técnico

#4.1

05/01/1990

RPI 1016

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