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Official data from INPI

APARELHO E METODO DE GRAVACAO DE SINAL DE CONTROLE SUBJACENTE

ConcedidaInvention Patent

Application data

Number

PI8007948

Type

Invention Patent

Filing

12/07/1979

Publication

-

Progress at the INPI

  1. Filing12/07/79
  2. Publication
  3. Examination06/28/83
  4. Allowance11/13/84
  5. Grant05/28/85
  6. Terminated08/09/94

The patent was granted on 05/28/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

IBM [US]

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Inventors

K. S. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Deferimento

#9.1

11/13/1984

RPI 734

Exigência - art. 36 da LPI

#6.1

12/27/1983

RPI 688

Solicitação de exame técnico

#4.1

06/28/1983

RPI 662

Anuidade - prazo legal encerrado

#18.2

08/09/1994

RPI 1236

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