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Official data from INPI

ATENUADOR

Arquivada/ExtintaUtility Model

Application data

Number

MU5701149

Type

Utility Model

Filing

09/16/1977

Publication

-

Progress at the INPI

  1. Filing09/16/77
  2. Publication
  3. Examination
  4. Allowance08/02/83
  5. Grant02/28/84
  6. Expired08/16/88

The letters patent expired on 08/16/1988: 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: 08/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. P. (pessoa física)

Inventors

N. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

08/16/1988

RPI 930

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

11/22/1983

RPI 683

Deferimento

#9.1

08/02/1983

RPI 667

Exigência - art. 36 da LPI

#6.1

05/18/1982

RPI 604

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