(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

APARELHO PARA DETECTAR FALHAS EM UMA FIBRA ÓPTICA, APARELHO PARA DETECTAR FALHAS PARA TESTAR UMA FIBRA ÓPTICA E REFLETÔMETRO A DOMÍNIO TEMPORAL ÓPTICO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9101472

Type

Invention Patent

Filing

04/11/1991

Publication

11/26/1991

Progress at the INPI

  1. Filing04/11/91
  2. Publication11/26/91
  3. Examination12/07/93
  4. Allowance09/12/95
  5. Grant05/28/96
  6. Expired06/22/10

The letters patent expired on 06/22/2010: 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: 06/22/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

Minnesota Mining And Manufacturing Company

US

See this company's full portfolio

Inventors

R. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/508,844 · 04/12/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 11/04/2006

06/22/2010

RPI 2059

Concessão da patente

#16.1

05/28/1996

RPI 1330

Deferimento

#9.1

09/12/1995

RPI 1293

Exigência - art. 36 da LPI

#6.1

03/14/1995

RPI 1267

Solicitação de exame técnico

#4.1

12/07/1993

RPI 1201

Publicação do pedido de patente

#3.1

11/26/1991

RPI 1095

Pedido de patente depositado

#2.1

10/08/1991

RPI 1088

Related

Same category

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.