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Official data from INPI

NÚCLEO MAGNÉTICO DE LÂMINAS.

ConcedidaInvention Patent
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Application data

Number

PI8108546

Type

Invention Patent

Filing

12/30/1981

Publication

04/12/1983
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Progress at the INPI

  1. Filing12/30/81
  2. Publication04/12/83
  3. Examination06/11/85
  4. Allowance08/12/86
  5. Grant04/28/87
  6. Terminated08/07/90

The patent was granted on 04/28/1987 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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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

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Inventors

P. M. (pessoa física)

S. J. (pessoa física)

Technical data

IPC Classification

H01F 3/02

Priority claims

US

260.635 · 05/05/1981

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

12/31/1985

RPI 793

Notificação para pagamento de retribuição

#13.1

08/27/1985

RPI 775

Solicitação de exame técnico

#4.1

06/11/1985

RPI 764

Publicação do pedido de patente

#3.1

04/12/1983

RPI 651

Pedido de patente depositado

#2.1

02/24/1982

RPI 592

Anuidade - prazo legal encerrado

#18.2

08/07/1990

RPI 1027

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