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Official data from INPI

VÁLVULA PILOTO

ConcedidaInvention Patent

Application data

Number

PI7901589

Type

Invention Patent

Filing

03/15/1979

Publication

-

Progress at the INPI

  1. Filing03/15/79
  2. Publication
  3. Examination
  4. Allowance02/16/83
  5. Grant11/29/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 11/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. F. (pessoa física)

Inventors

A. E. (pessoa física)

Technical data

IPC Classification

Priority claims

SE

7803121-8 · 03/17/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

14.7

08/30/1983

RPI 671

14.4

08/23/1983

RPI 670

Notificação para pagamento de retribuição

#13.1

06/14/1983

RPI 660

Deferimento

#9.1

02/16/1983

RPI 643

Exigência - art. 36 da LPI

#6.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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