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Official data from INPI

SELO PARA HASTE DE VÁLVULA MEDIDORA

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905012

Type

Invention Patent

Filing

10/03/1989

Publication

07/31/1990

Progress at the INPI

  1. Filing10/03/89
  2. Publication07/31/90
  3. Examination08/20/91
  4. Allowance11/23/93
  5. Grant05/31/94
  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

D. C. (pessoa física)

US

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Inventors

D. B. (pessoa física)

US

E. L. (pessoa física)

US

K. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

287,795 · 12/21/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 03/10/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

11/23/1993

RPI 1199

Solicitação de exame técnico

#4.1

08/20/1991

RPI 1081

Publicação do pedido de patente

#3.1

07/31/1990

RPI 1026

Pedido de patente depositado

#2.1

03/20/1990

RPI 1010

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