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Official data from INPI

UMIDIFICADOR E AQUECEDOR DE OXIGENIO

ConcedidaUtility Model

Application data

Number

MU6101620

Type

Utility Model

Filing

11/13/1981

Publication

06/28/1983

Progress at the INPI

  1. Filing11/13/81
  2. Publication06/28/83
  3. Examination10/04/83
  4. Allowance04/09/85
  5. Grant10/29/85
  6. Expired11/22/94

The letters patent expired on 11/22/1994: 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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

SUASSUNA UMBERTO [BR]

Inventors

S. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

07/30/1985

RPI 771

Deferimento

#9.1

04/09/1985

RPI 755

Exigência - art. 36 da LPI

#6.1

08/07/1984

RPI 720

Solicitação de exame técnico

#4.1

10/04/1983

RPI 676

Publicação do pedido de patente

#3.1

06/28/1983

RPI 662

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

Carta-patente expirada

#21.1

11/22/1994

RPI 1251

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