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Official data from INPI

FILTRO APERFEICOADO PARA FUMACA DE TABACO

ConcedidaInvention Patent

Application data

Number

PI7706658

Type

Invention Patent

Filing

10/06/1976

Publication

-

Progress at the INPI

  1. Filing10/06/76
  2. Publication
  3. Examination
  4. Allowance02/08/83
  5. Grant09/27/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 09/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SOUZA CRUZ IND & COM

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Inventors

C. S. (pessoa física)

G. J. (pessoa física)

H. H. (pessoa física)

L. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1983

RPI 675

Notificação para pagamento de retribuição

#13.1

06/07/1983

RPI 659

Deferimento

#9.1

02/08/1983

RPI 642

15.0

08/31/1982

RPI 619

Exigência - art. 36 da LPI

#6.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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