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Official data from INPI

SUPRESSOR DE SOBRETENSÃO.

ConcedidaInvention Patent

Application data

Number

PI8204443

Type

Invention Patent

Filing

07/29/1982

Publication

07/19/1983

Progress at the INPI

  1. Filing07/29/82
  2. Publication07/19/83
  3. Examination07/16/85
  4. Allowance05/27/86
  5. Grant12/30/86
  6. Terminated02/11/92

The patent was granted on 12/30/1986 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: 12/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Hitachi, Ltd.

JP

See this company's full portfolio

Inventors

A. M. (pessoa física)

JP

J. O. (pessoa física)

JP

K. S. (pessoa física)

JP

Y. A. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

119086/81 · 07/31/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/30/1986

RPI 845

Notificação para pagamento de retribuição

#13.1

09/23/1986

RPI 831

Republicação - classificação IPC

#15.11

05/27/1986

RPI 814

Deferimento

#9.1

05/27/1986

RPI 814

Solicitação de exame técnico

#4.1

07/16/1985

RPI 769

Publicação do pedido de patente

#3.1

07/19/1983

RPI 665

Pedido de patente depositado

#2.1

09/14/1982

RPI 621

Anuidade - prazo legal encerrado

#18.2

02/11/1992

RPI 1106

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