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Official data from INPI

APERFEICOAMENTO EM VALVULA

Arquivada/ExtintaUtility Model

Application data

Number

MU5800142

Type

Utility Model

Filing

02/09/1978

Publication

-

Progress at the INPI

  1. Filing02/09/78
  2. Publication
  3. Examination
  4. Allowance11/23/82
  5. Grant06/28/83
  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.

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Latest action published by the INPI: 08/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. P. (pessoa física)

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Inventors

C. 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

Pedido de licença compulsória

#20.1

08/07/1984

RPI 720

20.10

07/10/1984

RPI 716

Licença compulsória (variante)

#20.2

03/07/1984

RPI 698

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

04/05/1983

RPI 650

Deferimento

#9.1

11/23/1982

RPI 631

Exigência - art. 36 da LPI

#6.1

06/08/1982

RPI 607

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