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

PROCESSO PARA ELIMINAR A DEPRESSÃO CENTRAL DO ÍNDICE DE REFRAÇÃO EM FIBRAS ÓPTICAS E FIBRAS ÓPTICAS ASSIM OBTIDAS.

Em AnáliseInvention Patent

Application data

Number

PI8504882

Type

Invention Patent

Filing

10/01/1985

Publication

05/05/1987

Progress at the INPI

  1. Filing10/01/85
  2. Publication05/05/87
  3. Abandoned07/21/87
  4. Allowance
  5. Grant
  6. In force

The applicant withdrew the application. The case ended without a patent.

Talk to a specialist

Latest action published by the INPI: 07/21/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Telecomunicações Brasileiras S/A - Telebrás

SP, BR

See this company's full portfolio

Inventors

C. É. (pessoa física)

BR

N. W. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/21/1987

RPI 874

Publicação antecipada

#3.2

05/05/1987

RPI 863

Pedido de patente depositado

#2.1

11/11/1986

RPI 838

10.1

05/14/1991

RPI 1067

Conhecimento de parecer técnico

#7.1

01/08/1991

RPI 1049

Patent monitoring

Track this patent in real time.

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