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Official data from INPI

INDICADOR DE NÍVEL DE CABEÇA DE POÇO SUBMARINO

Em AnáliseInvention Patent

Application data

Number

PI8602658

Type

Invention Patent

Filing

06/06/1986

Publication

02/02/1988

Progress at the INPI

  1. Filing06/06/86
  2. Publication02/02/88
  3. Examination07/25/89
  4. Allowance10/02/90
  5. Grant04/30/91
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 07/25/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Petróleo Brasileiro S/A - Petrobrás

RJ, BR

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Inventors

A. S. (pessoa física)

BR

C. V. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/25/1989

RPI 979

Publicação do pedido de patente

#3.1

02/02/1988

RPI 902

Pedido de patente depositado

#2.1

12/09/1986

RPI 842

Carta-patente expirada

#21.1

Patente extinta em 06/06/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/15/1991

RPI 1050

Deferimento

#9.1

10/02/1990

RPI 1035

Exigência - art. 36 da LPI

#6.1

05/01/1990

RPI 1016

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