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Official data from INPI

VÁLVULA DE RETENÇÃO E DE EXPANSÃO COMANDADA POR UM FLUIDO

Em AnáliseInvention Patent

Application data

Number

PI8802714

Type

Invention Patent

Filing

06/03/1988

Publication

12/27/1988

Progress at the INPI

  1. Filing06/03/88
  2. Publication12/27/88
  3. Examination05/23/89
  4. Allowance09/10/91
  5. Grant05/26/92
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Societe Des Produits Nestle SA

CH

See this company's full portfolio

Inventors

W. L. (pessoa física)

CH

Technical data

IPC Classification

Priority claims

CH

87108238.4 · 06/06/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

05/23/1989

RPI 970

Publicação do pedido de patente

#3.1

12/27/1988

RPI 949

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Carta-patente expirada

#21.1

Patente extinta em 03/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

05/26/1992

RPI 1121

Notificação para pagamento de retribuição

#13.1

01/14/1992

RPI 1102

Deferimento

#9.1

09/10/1991

RPI 1084

Exigência - art. 36 da LPI

#6.1

04/16/1991

RPI 1063

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