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Official data from INPI

SISTEMA DE COMUNICAÇÃO PARA REDE DE DISTRIBUIÇÃO

ConcedidaInvention Patent

Application data

Number

PI8202001

Type

Invention Patent

Filing

04/07/1982

Publication

03/15/1983

Progress at the INPI

  1. Filing04/07/82
  2. Publication03/15/83
  3. Examination05/14/85
  4. Allowance08/12/86
  5. Grant04/28/87
  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: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. C. (pessoa física)

US

Inventors

T. Y. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

252.682 · 04/09/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/28/1987

RPI 862

Notificação para pagamento de retribuição

#13.1

12/02/1986

RPI 841

Deferimento

#9.1

08/12/1986

RPI 825

Exigência - art. 36 da LPI

#6.1

12/03/1985

RPI 789

Solicitação de exame técnico

#4.1

05/14/1985

RPI 760

Publicação do pedido de patente

#3.1

03/15/1983

RPI 647

Pedido de patente depositado

#2.1

06/01/1982

RPI 606

Carta-patente expirada

#21.1

Patente extinta em 07/04/97

07/01/2008

RPI 1956

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