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Official data from INPI

UNIDADE E CONJUNTO DE FILTRO COM AÇÃO REPELENTE

Em AnáliseInvention PatentPCT · US1985001144
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Application data

Number

PI8506786

Type

Invention Patent

Filing

06/19/1985

Publication

11/25/1986

PCT

US1985001144
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Progress at the INPI

  1. Filing06/19/85
  2. Publication11/25/86
  3. Examination11/24/87
  4. Allowance04/02/91
  5. Grant10/29/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 11/24/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

P. C. (pessoa física)

US

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Inventors

J. C. (pessoa física)

R. S. (pessoa física)

W. S. (pessoa física)

US

Technical data

IPC Classification

B01D 35/18

Priority claims

US

622,163 · 06/19/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

11/24/1987

RPI 892

Notificação de entrada na fase nacional - PCT

#1.3

11/25/1986

RPI 840

Carta-patente expirada

#21.1

Patente extinta em 19/06/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

10/29/1991

RPI 1091

Notificação para pagamento de retribuição

#13.1

07/16/1991

RPI 1076

Deferimento

#9.1

04/02/1991

RPI 1061

Exigência - art. 36 da LPI

#6.1

08/14/1990

RPI 1028

Exigência - art. 36 da LPI

#6.1

01/09/1990

RPI 1001

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