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Official data from INPI

PROCESSO DE FABRICAR UMA PREFORMA DE GUIA DE ONDAS ÓPTICA EM VIDRO SILICIOSO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103945

Type

Invention Patent

Filing

09/13/1991

Publication

06/09/1992

Progress at the INPI

  1. Filing09/13/91
  2. Publication06/09/92
  3. Examination11/10/92
  4. Allowance03/10/98
  5. Grant11/24/98
  6. Expired06/11/13

The letters patent expired on 06/11/2013: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 06/11/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Furukawa Electric Co., Ltd.

JP

See this company's full portfolio

Inventors

H. H. (pessoa física)

JP

K. Y. (pessoa física)

JP

T. M. (pessoa física)

JP

T. Y. (pessoa física)

JP

T. S. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

2-244815 · 09/15/1990

JP

3-125584 · 04/26/1991

JP

3-18421 · 01/18/1991

JP

3-68698 · 03/08/1991

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinte em 13/09/2011

06/11/2013

RPI 2214

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

03/10/1998

RPI 1420

Solicitação de exame técnico

#4.1

11/10/1992

RPI 1145

Publicação do pedido de patente

#3.1

06/09/1992

RPI 1123

Pedido de patente depositado

#2.1

10/22/1991

RPI 1090

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