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Official data from INPI

SISTEMA PARA RESFRIAR CRIOGENICAMENTE UM COMPARTIMENTO DE CARGA DE UM VEICULO REFRIGERADO

ConcedidaInvention Patent

Application data

Number

PI7904377

Type

Invention Patent

Filing

07/24/1978

Publication

-

Progress at the INPI

  1. Filing07/24/78
  2. Publication
  3. Examination03/16/82
  4. Allowance03/22/83
  5. Grant10/25/83
  6. Expired04/18/95

The letters patent expired on 04/18/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

T. L. (pessoa física)

Inventors

T. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

08/02/1983

RPI 667

Deferimento

#9.1

03/22/1983

RPI 648

Solicitação de exame técnico

#4.1

03/16/1982

RPI 595

Carta-patente expirada

#21.1

04/18/1995

RPI 1272

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