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Official data from INPI

APARELHO, PROCESSO, SISTEMA E REDE DE COMUNICAÇÃO DE DADOS

PublicadaInvention Patent

Application data

Number

PI8704517

Type

Invention Patent

Filing

09/02/1987

Publication

04/19/1988

Progress at the INPI

  1. Filing09/02/87
  2. Publication04/19/88
  3. Examination02/06/90
  4. Allowance02/01/94
  5. Grant08/30/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 04/19/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hitachi, Ltd

JP

See this company's full portfolio

Inventors

H. Y. (pessoa física)

JP

M. O. (pessoa física)

JP

M. T. (pessoa física)

JP

T. Y. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

207904/86 · 09/05/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

04/19/1988

RPI 913

Pedido de patente depositado

#2.1

11/17/1987

RPI 891

Carta-patente expirada

#21.1

Patente extinta em 02/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

08/30/1994

RPI 1239

Notificação para pagamento de retribuição

#13.1

05/24/1994

RPI 1225

Deferimento

#9.1

02/01/1994

RPI 1209

Solicitação de exame técnico

#4.1

02/06/1990

RPI 1005

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