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Official data from INPI

DISPOSIÇÃO DE FILTRO E PROCESSO DE MONTAGEM DE UM FILTRO DE FLUIDO DO TIPO ROTATIVO

Arquivada/ExtintaInvention PatentPCT · US1988000148

Application data

Number

PI8807321

Type

Invention Patent

Filing

01/11/1988

Publication

03/13/1990

PCT

US1988000148

Progress at the INPI

  1. Filing01/11/88
  2. Publication03/13/90
  3. Examination08/07/90
  4. Allowance09/05/95
  5. Grant04/30/96
  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: 09/02/2008. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Donaldson Company, Inc

US

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Inventors

G. R. (pessoa física)

US

G. G. (pessoa física)

US

K. M. (pessoa física)

US

R. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

004.350 · 01/16/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 11/01/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/30/1996

RPI 1326

Deferimento

#9.1

09/05/1995

RPI 1292

Exigência - art. 36 da LPI

#6.1

12/20/1994

RPI 1255

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

Notificação de entrada na fase nacional - PCT

#1.3

03/13/1990

RPI 1009

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