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Official data from INPI

MÉTODO PARA ELIMINAR CONTAMINANTES POR MEIO DE CENTRIFUGAÇÃO; CONJUNTO DE LIMPADOR DE ÓLEO CENTRÍFUGO; SISTEMA DE FILTRO DE ÓLEO CENTRÍFUGO.

ConcedidaInvention Patent

Application data

Number

PI8305198

Type

Invention Patent

Filing

01/18/1983

Publication

12/27/1983

Progress at the INPI

  1. Filing01/18/83
  2. Publication12/27/83
  3. Examination09/17/85
  4. Allowance07/14/87
  5. Grant01/26/88
  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: 01/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

AE Plc

GB

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Inventors

M. [. (pessoa física)

Technical data

IPC Classification

Priority claims

US

340.884 · 01/19/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/26/1988

RPI 901

Notificação para pagamento de retribuição

#13.1

11/10/1987

RPI 890

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

10/07/1986

RPI 833

Solicitação de exame técnico

#4.1

09/17/1985

RPI 778

Notificação de entrada na fase nacional - PCT

#1.3

12/27/1983

RPI 688

Carta-patente expirada

#21.1

Patente extinta em 18/01/98

07/01/2008

RPI 1956

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