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Official data from INPI

SISTEMA DE COMPUTADOR DUPLO

PublicadaInvention Patent

Application data

Number

PI8901738

Type

Invention Patent

Filing

04/12/1989

Publication

11/21/1989

Progress at the INPI

  1. Filing04/12/89
  2. Publication11/21/89
  3. Examination08/14/90
  4. Allowance11/03/98
  5. Grant03/30/99
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Y. C. (pessoa física)

JP

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Inventors

E. N. (pessoa física)

JP

H. A. (pessoa física)

JP

I. D. (pessoa física)

JP

S. H. (pessoa física)

JP

Y. M. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

88-105064 · 04/27/1988

JP

88-109955 · 05/06/1988

JP

88-90752 · 04/13/1988

JP

88-96171 · 04/19/1988

JP

88-96172 · 04/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/21/1989

RPI 996

Pedido de patente depositado

#2.1

05/23/1989

RPI 970

Carta-patente expirada

#21.1

Patente extinta em 12/04/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

03/30/1999

RPI 1473

Deferimento

#9.1

11/03/1998

RPI 1452

Solicitação de exame técnico

#4.1

08/14/1990

RPI 1028

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