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Official data from INPI

GUIA DE ONDA DE FILAMENTO ÓTICO

ArquivadaInvention Patent

Application data

Number

PI8206328

Type

Invention Patent

Filing

10/29/1982

Publication

06/05/1984

Progress at the INPI

  1. Filing10/29/82
  2. Publication06/05/84
  3. Examination07/22/86
  4. Allowance03/12/91
  5. Grant09/24/91
  6. Terminated04/02/96

The patent was granted on 09/24/1991 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: 10/17/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Prad Research and Development N.V.

NL

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Inventors

T. B. (pessoa física)

US

Technical data

Priority claims

US

317.675 · 11/02/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

11.3

10/17/1989

RPI 991

Exigência - art. 36 da LPI

#6.1

03/21/1989

RPI 961

Conhecimento de parecer técnico

#7.1

10/25/1988

RPI 940

6.2

03/04/1987

RPI 854

Solicitação de exame técnico

#4.1

07/22/1986

RPI 822

Publicação do pedido de patente

#3.1

06/05/1984

RPI 711

Pedido de patente depositado

#2.1

12/21/1982

RPI 635

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C03B 37/025; C03C 25/02; G02B 5/172.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

04/02/1996

RPI 1322

Concessão da patente

#16.1

09/24/1991

RPI 1086

Notificação para pagamento de retribuição

#13.1

06/25/1991

RPI 1073

Deferimento

#9.1

03/12/1991

RPI 1058

102

01/08/1991

RPI 1049

120

07/31/1990

RPI 1026

Pedido de recurso

#12.3

04/10/1990

RPI 1013

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