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Official data from INPI

TROCADOR DE CALOR DE PLACAS

Em ExigênciaInvention Patent
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Application data

Number

PI8607187

Type

Invention Patent

Filing

09/12/1986

Publication

09/13/1988
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Progress at the INPI

  1. Filing09/12/86
  2. Publication09/13/88
  3. Examination11/08/88
  4. Allowance10/30/90
  5. Grant04/30/91
  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.

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Latest action published by the INPI: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alfa-Laval Thermal AB

SE

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Inventors

J. B. (pessoa física)

SE

J. A. (pessoa física)

SE

Technical data

IPC Classification

F28F 3/08

Priority claims

SE

8504379-2 · 09/23/1985

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/17/1989

RPI 991

Solicitação de exame técnico

#4.1

11/08/1988

RPI 942

Notificação de entrada na fase nacional - PCT

#1.3

09/13/1988

RPI 934

Carta-patente expirada

#21.1

Patente extinta em 12/09/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

02/13/1991

RPI 1054

Deferimento

#9.1

10/30/1990

RPI 1039

Exigência - art. 36 da LPI

#6.1

06/05/1990

RPI 1021

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