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Official data from INPI

PROCESSO DE ACOPLAMENTO DE MÓDULO DE DETECTOR SÍSMICO À PAREDE DE UM FURO DE SONDAGEM E SONDA PARA IMPLEMENTAÇÃO DO PROCESSO

PublicadaInvention Patent

Application data

Number

PI8803692

Type

Invention Patent

Filing

07/25/1988

Publication

02/28/1989

Progress at the INPI

  1. Filing07/25/88
  2. Publication02/28/89
  3. Examination04/23/91
  4. Allowance04/26/94
  5. Grant10/25/94
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 02/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Prad Research and Development N.V.

NL

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Inventors

A. D. (pessoa física)

FR

B. B. (pessoa física)

US

C. S. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

87 11526 · 08/13/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

02/28/1989

RPI 958

Pedido de patente depositado

#2.1

01/24/1989

RPI 953

Carta-patente expirada

#21.1

Patente extinta em 25/07/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

08/23/1994

RPI 1238

Deferimento

#9.1

04/26/1994

RPI 1221

6.2

07/20/1993

RPI 1181

Solicitação de exame técnico

#4.1

04/23/1991

RPI 1064

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