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Official data from INPI

APERFEIÇOAMENTO EM TÚNEL DE AVANÇO SOB PRESSÃO.

Em AnáliseInvention Patent

Application data

Number

PI8602114

Type

Invention Patent

Filing

04/25/1986

Publication

11/10/1987

Progress at the INPI

  1. Filing04/25/86
  2. Publication11/10/87
  3. Examination02/02/88
  4. Allowance02/19/91
  5. Grant07/30/91
  6. Terminated09/26/95

The patent was granted on 07/30/1991 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: 02/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Construtora Civil e Industrial S/A CONCISA

SP, BR

See this company's full portfolio

Inventors

C. C. (pessoa física)

Technical data

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

02/02/1988

RPI 902

Publicação do pedido de patente

#3.1

11/10/1987

RPI 890

Pedido de patente depositado

#2.1

11/11/1986

RPI 838

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: E21D 10/00; E21D 11/08; E21D 11/00.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

09/26/1995

RPI 1295

Concessão da patente

#16.1

07/30/1991

RPI 1078

Deferimento

#9.1

02/19/1991

RPI 1055

Exigência - art. 36 da LPI

#6.1

04/10/1990

RPI 1013

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