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

PROCESSO DE E APARELHO PARA TRATAR UMA CORRENTE DE FLUXO DE GÁS CONTENDO PARTÍCULAS

Prazo de SigiloInvention Patent

Application data

Number

PI8902558

Type

Invention Patent

Filing

06/02/1989

Publication

01/23/1990

Progress at the INPI

  1. Filing06/02/89
  2. Publication01/23/90
  3. Examination03/10/92
  4. Allowance04/30/96
  5. Grant03/25/97
  6. Expired12/22/09

The letters patent expired on 12/22/2009: 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

Cyclofil (Proprietary) Limited

ZA

Inventors

M. D. (pessoa física)

ZA

P. V. (pessoa física)

ZA

W. P. (pessoa física)

ZA

Technical data

IPC Classification

Priority claims

ZA

88/3923 · 06/02/1988

ZA

89/1144 · 02/14/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

07/11/1989

RPI 977

Carta-patente expirada

#21.1

Patente extinta em 02/06/2004

12/22/2009

RPI 2033

Concessão da patente

#16.1

03/25/1997

RPI 1373

Deferimento

#9.1

04/30/1996

RPI 1326

Solicitação de exame técnico

#4.1

03/10/1992

RPI 1110

Publicação do pedido de patente

#3.1

01/23/1990

RPI 1003

Patent monitoring

Track this patent in real time.

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