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Official data from INPI

SISTEMA SENSOR DE PRESSÃO/TEMPERATURA DE FILTROS

Arquivada/ExtintaInvention PatentPCT · US1989000230

Application data

Number

PI8905703

Type

Invention Patent

Filing

01/20/1989

Publication

11/20/1990

PCT

US1989000230

Progress at the INPI

  1. Filing01/20/89
  2. Publication11/20/90
  3. Examination07/16/91
  4. Allowance06/28/94
  5. Grant12/27/94
  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

Hughes Aircraft Company

US

See this company's full portfolio

Inventors

B. L. (pessoa física)

US

E. H. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/159,816 · 02/24/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/01/2004

12/29/2009

RPI 2034

Concessão da patente

#16.1

12/27/1994

RPI 1256

Deferimento

#9.1

06/28/1994

RPI 1230

Solicitação de exame técnico

#4.1

07/16/1991

RPI 1076

Notificação de entrada na fase nacional - PCT

#1.3

11/20/1990

RPI 1042

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