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Official data from INPI

TROCADOR DE CALOR

Em AnáliseInvention Patent
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Application data

Number

PI8603460

Type

Invention Patent

Filing

07/23/1986

Publication

01/13/1987
View on INPI

Progress at the INPI

  1. Filing07/23/86
  2. Publication01/13/87
  3. Examination05/05/87
  4. Allowance07/04/89
  5. Grant05/29/90
  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.

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Latest action published by the INPI: 10/31/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Martinato Máquinas de Precisão Ltda.,

RS, BR

Inventors

E. M. (pessoa física)

BR

Technical data

IPC Classification

F24H 3/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

10/31/1989

RPI 993

Deferimento

#9.1

07/04/1989

RPI 976

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Pedido de patente depositado

#2.1

01/13/1987

RPI 847

Publicação antecipada

#3.2

01/13/1987

RPI 847

Carta-patente expirada

#21.1

Patente extinta em 23/07/2001

07/22/2008

RPI 1959

Republicação - classificação IPC

#15.11

05/07/1991

RPI 1066

Concessão da patente

#16.1

05/29/1990

RPI 1020

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