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Official data from INPI

FILTRO CENTRÍFUGO DE ALTA RESISTÊNCIA.

ConcedidaInvention PatentPCT · US1982001343

Application data

Number

PI8207963

Type

Invention Patent

Filing

09/27/1982

Publication

10/04/1983

PCT

US1982001343

Progress at the INPI

  1. Filing09/27/82
  2. Publication10/04/83
  3. Examination12/27/83
  4. Allowance12/29/87
  5. Grant07/26/88
  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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Donaldson Company, Inc.

US

See this company's full portfolio

Inventors

S. [. (pessoa física)

Technical data

IPC Classification

Priority claims

US

316.144 · 10/29/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Exigência - art. 36 da LPI

#6.1

11/18/1986

RPI 839

Exigência - art. 36 da LPI

#6.1

06/04/1985

RPI 763

Solicitação de exame técnico

#4.1

12/27/1983

RPI 688

Notificação de entrada na fase nacional - PCT

#1.3

10/04/1983

RPI 676

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: F01M 11/03; B01D 29/10.

03/27/2018

RPI 2464

Carta-patente expirada

#21.1

Patente extinta em 27/09/97

07/01/2008

RPI 1956

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