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Official data from INPI

PERCUSSOR MECÂNICO DIRECIONAL

PublicadaInvention Patent

Application data

Number

PI8703283

Type

Invention Patent

Filing

06/03/1987

Publication

03/15/1988

Progress at the INPI

  1. Filing06/03/87
  2. Publication03/15/88
  3. Examination11/06/90
  4. Allowance08/20/91
  5. Grant05/26/92
  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: 03/15/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dailey International Inc.

US

Dailey International INC

US

Dailey Petroleum Services, Corp.

US

Inventors

C. T. (pessoa física)

US

J. B. (pessoa física)

US

L. M. (pessoa física)

US

R. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

870087 · 06/03/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

03/15/1988

RPI 908

Pedido de patente depositado

#2.1

09/29/1987

RPI 884

Carta-patente expirada

#21.1

Patente extinta em 03/06/2002

07/29/2008

RPI 1960

Alteração de nome deferida

#25.4

Alterado de: Dailey Petrolium Services Corp

11/10/1998

RPI 1453

Concessão da patente

#16.1

05/26/1992

RPI 1121

Notificação para pagamento de retribuição

#13.1

12/17/1991

RPI 1098

Deferimento

#9.1

08/20/1991

RPI 1081

Solicitação de exame técnico

#4.1

11/06/1990

RPI 1040

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