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Official data from INPI

VÁLVULA REGULADORA DE PRESSÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9102656

Type

Invention Patent

Filing

06/19/1991

Publication

02/11/1992

Progress at the INPI

  1. Filing06/19/91
  2. Publication02/11/92
  3. Examination04/12/94
  4. Allowance11/01/94
  5. Grant06/27/95
  6. Expired06/29/10

The letters patent expired on 06/29/2010: 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: 06/29/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Filterwerk Mann & Hummel GmbH

DE

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Inventors

H. H. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 40 22 129.6 · 07/11/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 19/06/2006

06/29/2010

RPI 2060

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

03/07/1995

RPI 1266

Deferimento

#9.1

11/01/1994

RPI 1248

Solicitação de exame técnico

#4.1

04/12/1994

RPI 1219

Publicação do pedido de patente

#3.1

02/11/1992

RPI 1106

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