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Official data from INPI

FONE DE OUVIDO PARA UTILIZAÇÃO POR UM USUÁRIO E FONE DE OUVIDO DE ELEMENTO DUAL

Arquivada/ExtintaInvention PatentPCT · US1993002168

Application data

Number

PI9306099

Type

Invention Patent

Filing

03/09/1993

Publication

11/18/1997

PCT

US1993002168

Progress at the INPI

  1. Filing03/09/93
  2. Publication11/18/97
  3. Examination
  4. Allowance08/07/01
  5. Grant12/26/01
  6. Expired07/09/13

The letters patent expired on 07/09/2013: 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: 07/09/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. C. (pessoa física)

US

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Inventors

M. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/854,479 · 03/18/1992

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 09/03/2013

07/09/2013

RPI 2218

Concessão da patente

#16.1

12/26/2001

RPI 1616

Deferimento

#9.1

08/07/2001

RPI 1596

Exigência - art. 36 da LPI

#6.1

01/02/2001

RPI 1565

Conhecimento de parecer técnico

#7.1

01/11/2000

RPI 1514

Notificação de entrada na fase nacional - PCT

#1.3

11/18/1997

RPI 1407

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