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

APERFEIÇOAMENTOS INTRODUZIDOS EM VÁLVULA DE DESCARGA FLUXÍVEL COM REGISTRO INTEGRADO

DeferidaInvention Patent

Application data

Number

PI8600979

Type

Invention Patent

Filing

03/07/1986

Publication

10/27/1987

Progress at the INPI

  1. Filing03/07/86
  2. Publication10/27/87
  3. Examination01/12/88
  4. Allowance07/11/89
  5. Grant05/29/90
  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: 07/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N. L. (pessoa física)

SP, BR

Inventors

N. L. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

07/11/1989

RPI 977

Solicitação de exame técnico

#4.1

01/12/1988

RPI 899

Publicação do pedido de patente

#3.1

10/27/1987

RPI 888

Pedido de patente depositado

#2.1

05/05/1987

RPI 863

Carta-patente expirada

#21.1

Patente extinta em 07/03/2001

07/22/2008

RPI 1959

Pedido de licença compulsória

#20.1

06/11/1991

RPI 1071

Concessão da patente

#16.1

05/29/1990

RPI 1020

Patent monitoring

Track this patent in real time.

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