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Official data from INPI

SISTEMA DE SERVO-POSICIONAMENTO DE INFORMACOES AMOSTRADAS E ARQUIVO DE DISCOS DE SERVO-SETOR

ConcedidaInvention Patent

Application data

Number

PI7908521

Type

Invention Patent

Filing

12/27/1978

Publication

-

Progress at the INPI

  1. Filing12/27/78
  2. Publication
  3. Examination06/08/82
  4. Allowance09/06/83
  5. Grant02/28/84
  6. Expired05/02/95

The letters patent expired on 05/02/1995: 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: 02/28/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM

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Inventors

L. W. (pessoa física)

T. J. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

12/27/1983

RPI 688

Deferimento

#9.1

09/06/1983

RPI 672

Republicação - classificação IPC

#15.11

04/05/1983

RPI 650

Exigência - art. 36 da LPI

#6.1

03/01/1983

RPI 645

Solicitação de exame técnico

#4.1

06/08/1982

RPI 607

Carta-patente expirada

#21.1

05/02/1995

RPI 1274

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