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Official data from INPI

APARELHO CORRETOR DE VARIACOES DA RESPOSTA ESPECTRAL DE UM SISTEMA DE REPRODUCAO DE VIDEODISCOS

Em AnáliseInvention Patent

Application data

Number

PI7908590

Type

Invention Patent

Filing

12/28/1979

Publication

-

Progress at the INPI

  1. Filing12/28/79
  2. Publication
  3. Examination04/06/82
  4. Allowance12/07/82
  5. Grant06/28/83
  6. Expired05/09/95

The letters patent expired on 05/09/1995: 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: 12/26/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MCA DISCO VISION [US]

Inventors

C. L. (pessoa física)

D. W. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

12/26/1984

RPI 740

20.4

12/18/1984

RPI 739

Concessão da patente

#16.1

06/28/1983

RPI 662

Notificação para pagamento de retribuição

#13.1

05/17/1983

RPI 656

Deferimento

#9.1

12/07/1982

RPI 633

Solicitação de exame técnico

#4.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

05/09/1995

RPI 1275

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