(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

REGULADOR DE PRESSÃO

Em AnáliseInvention Patent

Application data

Number

PI8102731

Type

Invention Patent

Filing

05/05/1981

Publication

01/26/1982

Progress at the INPI

  1. Filing05/05/81
  2. Publication01/26/82
  3. Examination06/07/83
  4. Allowance06/26/84
  5. Grant01/29/85
  6. Expired10/01/96

The letters patent expired on 10/01/1996: 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: 06/06/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E. A. (pessoa física)

SE

Inventors

B. A. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

147.860 · 05/08/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

06/06/1989

RPI 972

20.10

05/23/1989

RPI 970

20.7

05/23/1989

RPI 970

20.7

07/12/1988

RPI 925

Pedido de licença compulsória

#20.1

07/05/1988

RPI 924

Concessão da patente

#16.1

01/29/1985

RPI 745

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

Deferimento

#9.1

06/26/1984

RPI 714

Exigência - art. 36 da LPI

#6.1

12/13/1983

RPI 686

Solicitação de exame técnico

#4.1

06/07/1983

RPI 659

Publicação do pedido de patente

#3.1

01/26/1982

RPI 588

Carta-patente expirada

#21.1

10/01/1996

RPI 1348

Pedido de licença compulsória

#20.1

06/02/1992

RPI 1122

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.