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Official data from INPI

PROCESSO PARA A FORMACAO DE UM INVOLUCRO PARA UM TROCADOR DE CALOR DO TIPO RECUPERATIVO

ConcedidaInvention Patent

Application data

Number

PI8108303

Type

Invention Patent

Filing

12/22/1980

Publication

10/05/1982

Progress at the INPI

  1. Filing12/22/80
  2. Publication10/05/82
  3. Examination08/07/84
  4. Allowance02/12/85
  5. Grant08/27/85
  6. Terminated09/25/90

The patent was granted on 08/27/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

AIR PREHEATER [US]

Inventors

S. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Republicação - classificação IPC

#15.11

05/14/1985

RPI 760

Deferimento

#9.1

02/12/1985

RPI 747

Solicitação de exame técnico

#4.1

08/07/1984

RPI 720

Publicação do pedido de patente

#3.1

10/05/1982

RPI 624

Pedido de patente depositado

#2.1

02/16/1982

RPI 591

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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