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

DISPOSITIVO DE CONTROLE RESPONSIVO À PRESSÃO

Em AnáliseInvention Patent

Application data

Number

PI8603922

Type

Invention Patent

Filing

08/15/1986

Publication

03/24/1987

Progress at the INPI

  1. Filing08/15/86
  2. Publication03/24/87
  3. Examination10/13/87
  4. Allowance07/21/92
  5. Grant04/27/93
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 10/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

R. I. (pessoa física)

US

Inventors

P. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

766.829 · 08/16/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/13/1987

RPI 886

Publicação do pedido de patente

#3.1

03/24/1987

RPI 857

Pedido de patente depositado

#2.1

03/04/1987

RPI 854

Carta-patente expirada

#21.1

Patente extinta em 15/08/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/27/1993

RPI 1169

Notificação para pagamento de retribuição

#13.1

12/29/1992

RPI 1152

Republicação - classificação IPC

#15.11

10/06/1992

RPI 1140

Deferimento

#9.1

07/21/1992

RPI 1129

Exigência - art. 36 da LPI

#6.1

12/10/1991

RPI 1097

Patent monitoring

Track this patent in real time.

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