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Official data from INPI

POÇO POSSUINDO UM MEMBRO INTERNO TUBULAR, POÇO SUBMARINO POSSUINDO UMA BUCHA DE DESGASTE TUBULAR, SISTEMA DE POÇO E PROCESSO DE RETER LIBERAVELMENTE UM MEMBRO INTERNO TUBULAR

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101212

Type

Invention Patent

Filing

03/27/1991

Publication

11/26/1991

Progress at the INPI

  1. Filing03/27/91
  2. Publication11/26/91
  3. Examination02/24/93
  4. Allowance05/17/94
  5. Grant12/27/94
  6. Expired06/22/10

The letters patent expired on 06/22/2010: 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: 06/22/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ABB Vetco Gray Inc

US

Vetco Gray Inc.

US

See this company's full portfolio

Inventors

H. J. (pessoa física)

US

M. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

515.244 · 04/27/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 27/03/2006

06/22/2010

RPI 2059

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

09/27/1994

RPI 1243

Deferimento

#9.1

05/17/1994

RPI 1224

14.4

08/17/1993

RPI 1185

Solicitação de exame técnico

#4.1

02/24/1993

RPI 1160

Publicação do pedido de patente

#3.1

11/26/1991

RPI 1095

Pedido de patente depositado

#2.1

09/24/1991

RPI 1086

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