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Official data from INPI

DIFUSOR MODULAR

ConcedidaUtility Model

Application data

Number

MU6300396

Type

Utility Model

Filing

04/05/1983

Publication

02/21/1984

Progress at the INPI

  1. Filing04/05/83
  2. Publication02/21/84
  3. Examination05/02/84
  4. Allowance04/22/86
  5. Grant03/17/87
  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: 03/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. R. (pessoa física)

C. Z. (pessoa física)

R. Z. (pessoa física)

SP, BR

Inventors

R. C. (pessoa física)

Z. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/17/1987

RPI 856

14.1

09/23/1986

RPI 831

Notificação para pagamento de retribuição

#13.1

08/26/1986

RPI 827

Deferimento

#9.1

04/22/1986

RPI 809

8.1

03/04/1986

RPI 802

Solicitação de exame técnico

#4.1

05/02/1984

RPI 706

Publicação antecipada

#3.2

02/21/1984

RPI 696

Pedido de patente depositado

#2.1

05/17/1983

RPI 656

Carta-patente expirada

#21.1

11/22/1994

RPI 1251

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