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Official data from INPI

CENTRÍFUGA DE AUTO-PURGAÇÃO.

ConcedidaInvention PatentPCT · US1981001676

Application data

Number

PI8108934

Type

Invention Patent

Filing

12/15/1981

Publication

11/30/1982

PCT

US1981001676

Progress at the INPI

  1. Filing12/15/81
  2. Publication11/30/82
  3. Examination03/20/84
  4. Allowance12/26/84
  5. Grant06/25/85
  6. Terminated02/04/92

The patent was granted on 06/25/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/25/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Donaldson Company, Inc.

US

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Inventors

D. [. (pessoa física)

H. [. (pessoa física)

Technical data

IPC Classification

Priority claims

US

219.502 · 12/23/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/25/1985

RPI 766

Notificação para pagamento de retribuição

#13.1

04/16/1985

RPI 756

Deferimento

#9.1

12/26/1984

RPI 740

Solicitação de exame técnico

#4.1

03/20/1984

RPI 700

Notificação de entrada na fase nacional - PCT

#1.3

11/30/1982

RPI 632

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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