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Official data from INPI

VÁLVULA DE CONTROLE DE DOSAGEM

Arquivada/ExtintaInvention PatentPCT · US1987002003

Application data

Number

PI8707981

Type

Invention Patent

Filing

08/17/1987

Publication

04/17/1990

PCT

US1987002003

Progress at the INPI

  1. Filing08/17/87
  2. Publication04/17/90
  3. Examination10/16/90
  4. Allowance09/24/91
  5. Grant09/29/92
  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: 07/29/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. C. (pessoa física)

US

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Inventors

A. M. (pessoa física)

US

J. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

045.352 · 05/04/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 17/08/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

09/29/1992

RPI 1139

Notificação para pagamento de retribuição

#13.1

01/28/1992

RPI 1104

Deferimento

#9.1

09/24/1991

RPI 1086

Solicitação de exame técnico

#4.1

10/16/1990

RPI 1037

Notificação de entrada na fase nacional - PCT

#1.3

04/17/1990

RPI 1014

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