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

TUBO DE TRANSFERÊNCIA DE CALOR APERFEIÇOADO E PROCESSO DE FABRICAR O MESMO

Em AnáliseInvention Patent

Application data

Number

PI8602728

Type

Invention Patent

Filing

06/11/1986

Publication

02/10/1987

Progress at the INPI

  1. Filing06/11/86
  2. Publication02/10/87
  3. Examination05/05/87
  4. Allowance05/23/89
  5. Grant01/09/90
  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: 09/19/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Wolverine Tube, Inc.

US

Inventors

B. C. (pessoa física)

US

J. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

744.076 · 06/12/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

09/19/1989

RPI 987

Deferimento

#9.1

05/23/1989

RPI 970

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Publicação do pedido de patente

#3.1

02/10/1987

RPI 851

Pedido de patente depositado

#2.1

12/16/1986

RPI 843

Carta-patente expirada

#21.1

Patente extinta em 11/06/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

01/09/1990

RPI 1001

Patent monitoring

Track this patent in real time.

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