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Official data from INPI

CAMADA EMISSORA DE ELÉTRONS, MÉTODO PARA SUA FABRICAÇÃO DE CRT DE FEIXES MÚLTIPLOS UTILIZANDO DITA CAMADA

ConcedidaInvention Patent
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Application data

Number

PI8203186

Type

Invention Patent

Filing

05/31/1982

Publication

05/17/1983
View on INPI

Progress at the INPI

  1. Filing05/31/82
  2. Publication05/17/83
  3. Examination05/07/85
  4. Allowance09/15/87
  5. Grant04/26/88
  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.

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Latest action published by the INPI: 04/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

I. C. (pessoa física)

US

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Inventors

B. P. (pessoa física)

GB

Technical data

IPC Classification

H01J 19/02H01J 29/04H01J 9/12

Priority claims

US

279,281 · 06/30/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/26/1988

RPI 914

Notificação para pagamento de retribuição

#13.1

01/26/1988

RPI 901

Deferimento

#9.1

09/15/1987

RPI 882

Exigência - art. 36 da LPI

#6.1

03/24/1987

RPI 857

6.4

05/06/1986

RPI 811

Exigência - art. 36 da LPI

#6.1

03/25/1986

RPI 805

Solicitação de exame técnico

#4.1

05/07/1985

RPI 759

Publicação do pedido de patente

#3.1

05/17/1983

RPI 656

Pedido de patente depositado

#2.1

07/20/1982

RPI 613

Carta-patente expirada

#21.1

Patente extinta em 31/05/97

07/01/2008

RPI 1956

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