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Official data from INPI

PROCESSO PARA TRANSFERIR CALOR

PublicadaInvention Patent

Application data

Number

PI8901490

Type

Invention Patent

Filing

03/30/1989

Publication

11/14/1989

Progress at the INPI

  1. Filing03/30/89
  2. Publication11/14/89
  3. Examination01/21/92
  4. Allowance03/17/98
  5. Grant11/24/98
  6. Expired12/18/12

The letters patent expired on 12/18/2012: 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: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcan International Limited

CA

See this company's full portfolio

Inventors

D. C. (pessoa física)

JM

G. F. (pessoa física)

CA

Technical data

IPC Classification

Priority claims

US

175.046 · 03/30/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/14/1989

RPI 995

Pedido de patente depositado

#2.1

05/16/1989

RPI 969

Carta-patente expirada

#21.1

Patente extinta em 30/03/2009

12/18/2012

RPI 2189

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

03/17/1998

RPI 1421

Exigência - art. 36 da LPI

#6.1

10/22/1996

RPI 1351

Exigência - art. 36 da LPI

#6.1

12/19/1995

RPI 1307

Solicitação de exame técnico

#4.1

01/21/1992

RPI 1103

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