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Official data from INPI

LIGAÇÃO SANFONADA.

Em AnáliseUtility Model

Application data

Number

MU6100637

Type

Utility Model

Filing

05/18/1981

Publication

-

Progress at the INPI

  1. Filing05/18/81
  2. Publication
  3. Examination01/08/85
  4. Allowance12/17/85
  5. Grant07/29/86
  6. Expired12/07/93

The letters patent expired on 12/07/1993: 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: 01/13/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. G. (pessoa física)

Inventors

G. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

01/13/1987

RPI 847

Concessão da patente

#16.1

07/29/1986

RPI 823

Notificação para pagamento de retribuição

#13.1

04/22/1986

RPI 809

Deferimento

#9.1

12/17/1985

RPI 791

Exigência - art. 36 da LPI

#6.1

08/06/1985

RPI 772

Solicitação de exame técnico

#4.1

01/08/1985

RPI 742

Carta-patente expirada

#21.1

12/07/1993

RPI 1201

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