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

MÉTODO E EQUIPAMENTO PARA TROCA DE CALOR

ConcedidaInvention Patent

Application data

Number

PI8202651

Type

Invention Patent

Filing

05/07/1982

Publication

09/08/1982

Progress at the INPI

  1. Filing05/07/82
  2. Publication09/08/82
  3. Examination02/08/83
  4. Allowance11/29/88
  5. Grant08/29/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

AIRCO, INC.

The Boc Group, Inc.

US

Inventors

R. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

265.264 · 05/20/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

11/29/1988

RPI 945

Exigência - art. 36 da LPI

#6.1

08/23/1988

RPI 931

Exigência - art. 36 da LPI

#6.1

03/01/1988

RPI 906

14.4

10/08/1985

RPI 781

Republicação - classificação IPC

#15.11

05/21/1985

RPI 761

Exigência - art. 36 da LPI

#6.1

12/11/1984

RPI 738

Solicitação de exame técnico

#4.1

02/08/1983

RPI 642

Publicação antecipada

#3.2

09/08/1982

RPI 620

Pedido de patente depositado

#2.1

06/22/1982

RPI 609

Carta-patente expirada

#21.1

Patente extinta em 07/05/97

07/01/2008

RPI 1956

Patent monitoring

Track this patent in real time.

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