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Official data from INPI

CAPACITOR E PROCESSO E APARELHO PARA PRODUCAO DO MESMO

ConcedidaInvention Patent
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Application data

Number

PI8108082

Type

Invention Patent

Filing

02/27/1981

Publication

04/12/1983
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Progress at the INPI

  1. Filing02/27/81
  2. Publication04/12/83
  3. Examination07/09/85
  4. Allowance01/13/87
  5. Grant08/25/87
  6. Expired08/19/08

The letters patent expired on 08/19/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ILLINOIS TOOL WORKS [US]

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Inventors

R. C. (pessoa física)

Technical data

IPC Classification

H01G 13/00H01G 4/06

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Notificação para pagamento de retribuição

#13.1

06/09/1987

RPI 868

Deferimento

#9.1

01/13/1987

RPI 847

Exigência - art. 36 da LPI

#6.1

01/14/1986

RPI 795

Solicitação de exame técnico

#4.1

07/09/1985

RPI 768

Publicação do pedido de patente

#3.1

04/12/1983

RPI 651

Pedido de patente depositado

#2.1

02/09/1982

RPI 590

Carta-patente expirada

#21.1

Patente extinta em 14/12/96

08/19/2008

RPI 1963

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