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Official data from INPI

DISPOSITIVO FILTRADOR DE FLUIDOS.

Em AnáliseInvention PatentPCT · US1982001525

Application data

Number

PI8207950

Type

Invention Patent

Filing

10/28/1982

Publication

10/04/1983

PCT

US1982001525

Progress at the INPI

  1. Filing10/28/82
  2. Publication10/04/83
  3. Examination06/25/85
  4. Allowance01/22/91
  5. Grant08/27/91
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 10/11/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Donaldson Company, Inc.

US

See this company's full portfolio

Inventors

R. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

317.275 · 11/02/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

10/11/1988

RPI 938

6.2

03/24/1987

RPI 857

Solicitação de exame técnico

#4.1

06/25/1985

RPI 766

Notificação de entrada na fase nacional - PCT

#1.3

10/04/1983

RPI 676

Carta-patente expirada

#21.1

Patente extinta em 28/10/97

07/01/2008

RPI 1956

Concessão da patente

#16.1

08/27/1991

RPI 1082

Notificação para pagamento de retribuição

#13.1

05/14/1991

RPI 1067

Deferimento

#9.1

01/22/1991

RPI 1051

Exigência - art. 36 da LPI

#6.1

08/14/1990

RPI 1028

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