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Official data from INPI

SISTEMA DE PROCESSAMENTO DE DADOS

ConcedidaInvention Patent

Application data

Number

PI7806654

Type

Invention Patent

Filing

10/08/1977

Publication

-

Progress at the INPI

  1. Filing10/08/77
  2. Publication
  3. Examination
  4. Allowance02/21/84
  5. Grant09/25/84
  6. Expired05/03/94

The letters patent expired on 05/03/1994: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

FUJITSU LTD

USAC ELECTRONICS IND CO LTD

Inventors

K. T. (pessoa física)

S. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Republicação - classificação IPC

#15.11

04/17/1984

RPI 704

Deferimento

#9.1

02/21/1984

RPI 696

Republicação - classificação IPC

#15.11

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

08/30/1983

RPI 671

Carta-patente expirada

#21.1

05/03/1994

RPI 1222

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