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Official data from INPI

MÉTODO DE OPERAÇÃO DE UM DISPOSITIVO DE DISPLAY VISUAL

Em AnáliseInvention Patent

Application data

Number

PI8401544

Type

Invention Patent

Filing

04/03/1984

Publication

11/13/1984

Progress at the INPI

  1. Filing04/03/84
  2. Publication11/13/84
  3. Examination12/09/86
  4. Allowance04/16/91
  5. Grant11/26/91
  6. Terminated12/24/96

The patent was granted on 11/26/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/09/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

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Inventors

J. L. (pessoa física)

US

J. E. (pessoa física)

US

K. C. (pessoa física)

US

W. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

482.641 · 04/06/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

12/09/1986

RPI 842

Publicação do pedido de patente

#3.1

11/13/1984

RPI 734

Pedido de patente depositado

#2.1

06/19/1984

RPI 713

Anuidade - prazo legal encerrado

#18.2

12/24/1996

RPI 1360

Concessão da patente

#16.1

11/26/1991

RPI 1095

Notificação para pagamento de retribuição

#13.1

07/30/1991

RPI 1078

Deferimento

#9.1

04/16/1991

RPI 1063

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