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Official data from INPI

DISPOSITIVO PARA VENTILAÇÃO

Em AnáliseUtility Model

Application data

Number

MU6402037

Type

Utility Model

Filing

12/14/1984

Publication

07/01/1986

Progress at the INPI

  1. Filing12/14/84
  2. Publication07/01/86
  3. Examination03/10/87
  4. Allowance04/12/88
  5. Grant10/25/88
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Eternit S/A

SP, BR

See this company's full portfolio

Inventors

G. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

300

12/05/1989

RPI 998

201

09/19/1989

RPI 987

Pedido de licença voluntária

#17.1

12/13/1988

RPI 947

Concessão da patente

#16.1

10/25/1988

RPI 940

Notificação para pagamento de retribuição

#13.1

07/26/1988

RPI 927

Deferimento

#9.1

04/12/1988

RPI 912

Exigência - art. 36 da LPI

#6.1

12/15/1987

RPI 895

Solicitação de exame técnico

#4.1

03/10/1987

RPI 855

Publicação do pedido de patente

#3.1

07/01/1986

RPI 819

Pedido de patente depositado

#2.1

03/26/1985

RPI 753

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

320

03/19/1991

RPI 1059

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