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Official data from INPI

APARELHO PARA PURIFICAR AGUA NAO CLARIFICADA EM INDUSTRIAS DE PAPEL,POLPA E SEMELHANTES

Em AnáliseInvention Patent
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Application data

Number

PI7701771

Type

Invention Patent

Filing

03/24/1976

Publication

-
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Progress at the INPI

  1. Filing03/24/76
  2. Publication
  3. Examination
  4. Allowance06/01/82
  5. Grant
  6. Expired07/27/93

The letters patent expired on 07/27/1993: 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: 09/21/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. M. (pessoa física)

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

09/21/1982

RPI 622

Deferimento

#9.1

06/01/1982

RPI 606

15.0

01/12/1982

RPI 586

Exigência - art. 36 da LPI

#6.1

10/27/1981

RPI 575

Carta-patente expirada

#21.1

07/27/1993

RPI 1182

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