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

PROCESSO DE ADSORÇÃO POR OSCILAÇÃO DE PRESSÃO

Em AnáliseInvention Patent

Application data

Number

PI8605491

Type

Invention Patent

Filing

02/21/1986

Publication

04/22/1987

Progress at the INPI

  1. Filing02/21/86
  2. Publication04/22/87
  3. Examination04/05/88
  4. Allowance08/30/94
  5. Grant04/25/95
  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: 04/05/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

K. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

704.547 · 02/22/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

04/05/1988

RPI 911

Notificação de entrada na fase nacional - PCT

#1.3

04/22/1987

RPI 861

Carta-patente expirada

#21.1

Patente extinta em 21/02/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/25/1995

RPI 1273

Notificação para pagamento de retribuição

#13.1

01/03/1995

RPI 1257

Deferimento

#9.1

08/30/1994

RPI 1239

Exigência - art. 36 da LPI

#6.1

04/05/1994

RPI 1218

Patent monitoring

Track this patent in real time.

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