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Official data from INPI

APARELHO DE EXPLORAÇÃO SÍSMICA, E, PROCESSO PARA OBTER INFORMAÇÕES GEOFÍSICAS A PARTIR DE UMA FORMAÇÃO GEOLÓGICA PENETRADA POR UM FURO DE SONDAGEM.

Em AnáliseInvention PatentPCT · US1987000620

Application data

Number

PI8706212

Type

Invention Patent

Filing

03/18/1987

Publication

02/23/1988

PCT

US1987000620

Progress at the INPI

  1. Filing03/18/87
  2. Publication02/23/88
  3. Examination11/28/89
  4. Allowance04/06/93
  5. Grant09/28/93
  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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Chevron Research Company

US

See this company's full portfolio

Inventors

B. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

008,992 · 01/30/1987

US

841,073 · 03/18/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

15.9

11/28/1989

RPI 997

Solicitação de exame técnico

#4.1

11/28/1989

RPI 997

Notificação de entrada na fase nacional - PCT

#1.3

02/23/1988

RPI 905

Carta-patente expirada

#21.1

Patente extinta em 18/03/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/28/1993

RPI 1191

Notificação para pagamento de retribuição

#13.1

07/27/1993

RPI 1182

Deferimento

#9.1

04/06/1993

RPI 1166

Exigência - art. 36 da LPI

#6.1

07/21/1992

RPI 1129

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