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Official data from INPI

APERFEIÇOAMENTO EM SISTEMA DE TRAÇÃO TOTAL VEICULAR QUE UTILIZA MECANISMO DE RODAS LIVRES AUTOMÁTICAS DE ACIONAMENTO À VÁCUO NO EIXO DE TRAÇÃO AUXILIAR

PublicadaInvention Patent

Application data

Number

PI8800487

Type

Invention Patent

Filing

02/03/1988

Publication

09/12/1989

Progress at the INPI

  1. Filing02/03/88
  2. Publication09/12/89
  3. Examination10/15/91
  4. Allowance11/03/92
  5. Grant06/29/93
  6. Terminated06/25/96

The patent was granted on 06/29/1993 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

QT Engenharia e Equipamentos Ltda.

SP, BR

Inventors

W. F. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/12/1989

RPI 986

Pedido de patente depositado

#2.1

06/21/1988

RPI 922

Anuidade - prazo legal encerrado

#18.2

06/25/1996

RPI 1334

Concessão da patente

#16.1

06/29/1993

RPI 1178

Notificação para pagamento de retribuição

#13.1

03/23/1993

RPI 1164

Deferimento

#9.1

11/03/1992

RPI 1144

Republicação - classificação IPC

#15.11

10/06/1992

RPI 1140

Solicitação de exame técnico

#4.1

10/15/1991

RPI 1089

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