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Official data from INPI

VÁLVULA DOSADORA TENDO UMA FUNÇÃO DE DERIVAÇÃO CONTROLADA PELA VENTILAÇÃO

Arquivada/ExtintaInvention PatentPCT · US1989005089

Application data

Number

PI8907779

Type

Invention Patent

Filing

11/17/1989

Publication

08/13/1991

PCT

US1989005089

Progress at the INPI

  1. Filing11/17/89
  2. Publication08/13/91
  3. Examination06/15/93
  4. Allowance03/22/94
  5. Grant08/30/94
  6. Expired12/29/09

The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Allied-Signal Inc

US

See this company's full portfolio

Inventors

D. C. (pessoa física)

US

J. S. (pessoa física)

US

R. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

274.078 · 11/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 17/11/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

08/30/1994

RPI 1239

Deferimento

#9.1

03/22/1994

RPI 1216

Solicitação de exame técnico

#4.1

06/15/1993

RPI 1176

Notificação de entrada na fase nacional - PCT

#1.3

08/13/1991

RPI 1080

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