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Official data from INPI

DISPOSITIVO PARA A RETENCAO DE PERTURBADORES NO INTERIOR DE TUBOS TROCADORES TERMICOS

ConcedidaInvention Patent

Application data

Number

PI7801174

Type

Invention Patent

Filing

02/27/1978

Publication

-

Progress at the INPI

  1. Filing02/27/78
  2. Publication
  3. Examination
  4. Allowance07/13/82
  5. Grant01/25/83
  6. Terminated06/29/93

The patent was granted on 01/25/1983 and later terminated. Protection ended before the full term and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 01/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CHAUSSON USINES SA

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Inventors

M. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/25/1983

RPI 640

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

Deferimento

#9.1

07/13/1982

RPI 612

Exigência - art. 36 da LPI

#6.1

12/22/1981

RPI 583

21.5

07/06/1993

RPI 1179

Carta-patente expirada

#21.1

06/29/1993

RPI 1178

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