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Official data from INPI

SISTEMA MECÂNICO PARA IMPLANTAÇÃO DE TÚNEIS

Em AnáliseInvention Patent

Application data

Number

PI8701354

Type

Invention Patent

Filing

02/25/1987

Publication

12/08/1987

Progress at the INPI

  1. Filing02/25/87
  2. Publication12/08/87
  3. Examination02/17/88
  4. Allowance01/02/91
  5. Grant05/31/94
  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: 02/17/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Telar Engenharia e Comércio Ltda.

SP, BR

Inventors

M. B. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/17/1988

RPI 904

Publicação antecipada

#3.2

12/08/1987

RPI 894

Pedido de patente depositado

#2.1

07/07/1987

RPI 872

Carta-patente expirada

#21.1

Patente extinta em 25/02/2002

07/29/2008

RPI 1960

201

11/14/1995

RPI 1302

Pedido de licença voluntária

#17.1

07/04/1995

RPI 1283

Concessão da patente

#16.1

05/31/1994

RPI 1226

110

02/16/1994

RPI 1211

135

11/23/1993

RPI 1199

Retificação

#15.6

09/14/1993

RPI 1189

130

08/31/1993

RPI 1187

Retificação

#15.3

03/23/1993

RPI 1164

Recurso

#12.1

04/09/1991

RPI 1062

Deferimento

#9.1

01/02/1991

RPI 1048

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