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Official data from INPI

PERMUTADOR DE CALOR

DeferidaUtility Model

Application data

Number

MU6500433

Type

Utility Model

Filing

04/03/1985

Publication

09/10/1985

Progress at the INPI

  1. Filing04/03/85
  2. Publication09/10/85
  3. Examination01/07/86
  4. Allowance08/29/89
  5. Grant04/24/90
  6. Invalidated12/08/92

The patent was invalidated by the INPI in an administrative invalidity proceeding. Protection no longer exists.

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

Wagner das Neves D'Arco, brasileiro, engenheiro mecânico

SP, BR

Inventors

W. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

08/29/1989

RPI 984

Solicitação de exame técnico

#4.1

01/07/1986

RPI 794

Publicação antecipada

#3.2

09/10/1985

RPI 777

Pedido de patente depositado

#2.1

07/02/1985

RPI 767

200

12/08/1992

RPI 1149

Republicação - classificação IPC

#15.11

09/22/1992

RPI 1138

Pedido de licença voluntária

#17.1

05/28/1991

RPI 1069

Republicação - classificação IPC

#15.11

03/19/1991

RPI 1059

Concessão da patente

#16.1

04/24/1990

RPI 1015

Notificação para pagamento de retribuição

#13.1

01/09/1990

RPI 1001

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