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Official data from INPI

ESTRUTURA DE BOCA DE POÇO E ESTRUTURA DE POÇO

Em AnáliseInvention Patent

Application data

Number

PI9000829

Type

Invention Patent

Filing

02/21/1990

Publication

02/13/1991

Progress at the INPI

  1. Filing02/21/90
  2. Publication02/13/91
  3. Examination06/15/93
  4. Allowance06/28/94
  5. Grant03/28/95
  6. Terminated10/05/99

The patent was granted on 03/28/1995 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: 10/05/1999. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cameron Iron Works USA, Inc

US

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Inventors

J. S. (pessoa física)

US

M. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

373.093 · 08/07/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

Referente a 7ª anuidade ( prazo legal encerrado na vigencia da Lei 5772/71 do CPI )

10/05/1999

RPI 1500

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

11/01/1994

RPI 1248

Deferimento

#9.1

06/28/1994

RPI 1230

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

Publicação do pedido de patente

#3.1

02/13/1991

RPI 1054

Pedido de patente depositado

#2.1

06/05/1990

RPI 1021

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