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Official data from INPI

APERFEIÇOAMENTO EM ATUADOR PNEUMÁTICO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904303

Type

Invention Patent

Filing

08/28/1989

Publication

04/17/1990

Progress at the INPI

  1. Filing08/28/89
  2. Publication04/17/90
  3. Examination01/29/91
  4. Allowance03/17/92
  5. Grant02/24/93
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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: 12/22/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. S. (pessoa física)

CH

Inventors

W. S. (pessoa física)

CH

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/08/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

02/24/1993

RPI 1160

Notificação para pagamento de retribuição

#13.1

09/01/1992

RPI 1135

Deferimento

#9.1

03/17/1992

RPI 1111

Solicitação de exame técnico

#4.1

01/29/1991

RPI 1052

Publicação antecipada

#3.2

04/17/1990

RPI 1014

Pedido de patente depositado

#2.1

01/16/1990

RPI 1002

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