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Official data from INPI

APERFEIÇOAMENTOS INTRODUZIDOS EM VÁLVULA DE RETENÇÃO DE FLUÍDOS

Arquivada/ExtintaInvention Patent

Application data

Number

PI8904578

Type

Invention Patent

Filing

09/01/1989

Publication

03/05/1991

Progress at the INPI

  1. Filing09/01/89
  2. Publication03/05/91
  3. Examination08/06/91
  4. Allowance11/23/93
  5. Grant10/25/94
  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

VDO Kienzle Instrumentos Ltda

SP, BR

VDO Kienzle Instrumentos Ltda.

SP, BR

See this company's full portfolio

Inventors

F. C. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 01/09/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

04/12/1994

RPI 1219

Deferimento

#9.1

11/23/1993

RPI 1199

14.4

06/22/1993

RPI 1177

Solicitação de exame técnico

#4.1

08/06/1991

RPI 1079

Publicação do pedido de patente

#3.1

03/05/1991

RPI 1057

14.1

08/07/1990

RPI 1027

Pedido de patente depositado

#2.1

03/20/1990

RPI 1010

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