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Official data from INPI

TROCADOR DE CALOR DE TUBOS

Em AnáliseInvention Patent

Application data

Number

PI7706515

Type

Invention Patent

Filing

09/29/1977

Publication

-

Progress at the INPI

  1. Filing09/29/77
  2. Publication
  3. Examination
  4. Allowance09/08/82
  5. Grant03/29/83
  6. Terminated12/15/87

The patent was granted on 03/29/1983 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: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KLUCK E

Inventors

K. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Concessão da patente

#16.1

03/29/1983

RPI 649

Notificação para pagamento de retribuição

#13.1

01/11/1983

RPI 638

Deferimento

#9.1

09/08/1982

RPI 620

15.0

11/24/1981

RPI 579

Exigência - art. 36 da LPI

#6.1

11/10/1981

RPI 577

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