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Official data from INPI

ELEMENTO ESTAMPADO PARA CENTRAGEM DE PRECISÃO DE UMA INTERCONEXÃO GUIA DE LUZ EMPREGADO NA JUNÇÃO TOPO A TOPO DE DUAS EXTREMIDADES DE FIBRAS ÓTICAS

PublicadaInvention Patent

Application data

Number

PI8901692

Type

Invention Patent

Filing

04/10/1989

Publication

11/21/1989

Progress at the INPI

  1. Filing04/10/89
  2. Publication11/21/89
  3. Examination02/11/92
  4. Allowance11/12/96
  5. Grant08/26/97
  6. Expired05/21/13

The letters patent expired on 05/21/2013: 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: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

R. P. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

182,872 · 04/18/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/21/1989

RPI 996

Pedido de patente depositado

#2.1

05/23/1989

RPI 970

Carta-patente expirada

#21.1

Patente extinta em 10/04/2009

05/21/2013

RPI 2211

Concessão da patente

#16.1

08/26/1997

RPI 1395

Deferimento

#9.1

11/12/1996

RPI 1354

Exigência - art. 36 da LPI

#6.1

02/21/1996

RPI 1316

Exigência - art. 36 da LPI

#6.1

01/25/1994

RPI 1208

Solicitação de exame técnico

#4.1

02/11/1992

RPI 1106

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