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Official data from INPI

Sistema de comunicações e circuito indicador

ConcedidaInvention Patent

Application data

Number

PI8301091

Type

Invention Patent

Filing

03/04/1983

Publication

11/22/1983

Progress at the INPI

  1. Filing03/04/83
  2. Publication11/22/83
  3. Examination04/08/86
  4. Allowance02/09/88
  5. Grant07/26/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

S. C. (pessoa física)

US

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Inventors

B. J. (pessoa física)

Technical data

IPC Classification

Priority claims

US

354.156 · 03/05/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Deferimento

#9.1

02/09/1988

RPI 903

Exigência - art. 36 da LPI

#6.1

06/02/1987

RPI 867

Solicitação de exame técnico

#4.1

04/08/1986

RPI 807

Publicação do pedido de patente

#3.1

11/22/1983

RPI 683

Pedido de patente depositado

#2.1

04/19/1983

RPI 652

Carta-patente expirada

#21.1

Patente extinta em 04/03/98

07/01/2008

RPI 1956

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