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Official data from INPI

APARELHO DE TRAVAMENTO DE ÊMBOLO, PROTETOR CONTRA EXPLOSÃO DO TIPO DE ÊMBOLO, APARELHO DE TRAVAMENTO DE EIXO E APARELHO DE TRAVAMENTO DE EIXO E DE HASTE

PublicadaInvention Patent

Application data

Number

PI8704851

Type

Invention Patent

Filing

09/22/1987

Publication

05/24/1988

Progress at the INPI

  1. Filing09/22/87
  2. Publication05/24/88
  3. Examination09/25/90
  4. Allowance02/24/93
  5. Grant08/31/93
  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: 05/24/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cameron Iron Works, Inc.

US

Inventors

C. I. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

923592 · 10/27/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 22/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

08/31/1993

RPI 1187

Notificação para pagamento de retribuição

#13.1

06/08/1993

RPI 1175

Deferimento

#9.1

02/24/1993

RPI 1160

Solicitação de exame técnico

#4.1

09/25/1990

RPI 1034

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