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Official data from INPI

FREIO ELETROMAGNETICO

Em AnáliseInvention Patent

Application data

Number

PI7703717

Type

Invention Patent

Filing

06/08/1977

Publication

-

Progress at the INPI

  1. Filing06/08/77
  2. Publication
  3. Examination
  4. Allowance11/10/81
  5. Grant02/28/84
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 03/04/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNITEC IND METALURG LTD

Inventors

I. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

320

03/04/1986

RPI 802

300

12/03/1985

RPI 789

201

07/23/1985

RPI 770

Pedido de licença voluntária

#17.1

04/09/1985

RPI 755

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

12/13/1983

RPI 686

110

09/27/1983

RPI 675

14.7

12/07/1982

RPI 633

14.4

11/30/1982

RPI 632

Recurso

#12.1

03/16/1982

RPI 595

Deferimento

#9.1

11/10/1981

RPI 577

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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