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Official data from INPI

APERFEIÇOAMENTO EM EQUIPAMENTO DESTINADO A EXECUÇÃO DE TÚNEL DE AVANÇO SOB PRESSÃO.

Em AnáliseInvention Patent

Application data

Number

PI8604245

Type

Invention Patent

Filing

09/01/1986

Publication

06/23/1987

Progress at the INPI

  1. Filing09/01/86
  2. Publication06/23/87
  3. Examination12/01/87
  4. Allowance05/28/91
  5. Grant04/28/92
  6. Terminated12/31/96

The patent was granted on 04/28/1992 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 12/01/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Construtora Civil e Industrial S/A CONCISA

SP, BR

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Inventors

C. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/01/1987

RPI 893

Solicitação de exame não realizada

#4.2

08/25/1987

RPI 879

Publicação antecipada

#3.2

06/23/1987

RPI 870

Pedido de patente depositado

#2.1

03/17/1987

RPI 856

Anuidade - prazo legal encerrado

#18.2

12/31/1996

RPI 1361

Concessão da patente

#16.1

04/28/1992

RPI 1117

Notificação para pagamento de retribuição

#13.1

09/10/1991

RPI 1084

Deferimento

#9.1

05/28/1991

RPI 1069

Exigência - art. 36 da LPI

#6.1

01/02/1991

RPI 1048

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