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Official data from INPI

APERFEICOAMENTOS EM APARELHOS OU EQUIPAMENTOS FILTRANTES DE PRE-CAPA

ArquivadaInvention Patent
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Application data

Number

PI8301506

Type

Invention Patent

Filing

03/22/1983

Publication

09/06/1983
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Progress at the INPI

  1. Filing03/22/83
  2. Publication09/06/83
  3. Abandoned07/31/84
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LAREDO S A IND & COMERCIO [BR]

Inventors

H. C. (pessoa física)

Technical data

IPC Classification

B01D 25/02B01D 35/16

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

03/25/1986

RPI 805

Exigência - art. 36 da LPI

#6.1

05/07/1985

RPI 759

Solicitação de exame técnico

#4.1

07/31/1984

RPI 719

Publicação antecipada

#3.2

09/06/1983

RPI 672

Pedido de patente depositado

#2.1

05/10/1983

RPI 655

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