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Official data from INPI

PERMUTADOR DE CALOR TUBULAR

Arquivada/ExtintaInvention Patent

Application data

Number

PI9004567

Type

Invention Patent

Filing

09/06/1990

Publication

09/10/1991

Progress at the INPI

  1. Filing09/06/90
  2. Publication09/10/91
  3. Examination06/02/92
  4. Allowance08/23/94
  5. Grant04/25/95
  6. Expired06/01/10

The letters patent expired on 06/01/2010: 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: 06/01/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. A. (pessoa física)

DE

Inventors

H. L. (pessoa física)

DE

P. B. (pessoa física)

DE

Technical data

IPC Classification

Priority claims

DE

P 39 30 205.9 · 09/09/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 06/09/2005

06/01/2010

RPI 2056

Concessão da patente

#16.1

04/25/1995

RPI 1273

Notificação para pagamento de retribuição

#13.1

12/20/1994

RPI 1255

Deferimento

#9.1

08/23/1994

RPI 1238

Exigência - art. 36 da LPI

#6.1

01/18/1994

RPI 1207

Solicitação de exame técnico

#4.1

06/02/1992

RPI 1122

Publicação do pedido de patente

#3.1

09/10/1991

RPI 1084

Pedido de patente depositado

#2.1

03/19/1991

RPI 1059

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