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Official data from INPI

APERFEIÇOAMENTOS EM LINHA DE TRANSMISSÃO ISOLADA COM GÁS COMPRIMIDO

Em AnáliseInvention Patent

Application data

Number

PI8506416

Type

Invention Patent

Filing

12/20/1985

Publication

08/05/1986

Progress at the INPI

  1. Filing12/20/85
  2. Publication08/05/86
  3. Examination09/30/86
  4. Allowance04/16/91
  5. Grant09/24/91
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pirelli Cabos S/A

SP, BR

See this company's full portfolio

Inventors

F. N. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

09/30/1986

RPI 832

Publicação antecipada

#3.2

08/05/1986

RPI 824

Pedido de patente depositado

#2.1

03/18/1986

RPI 804

Carta-patente expirada

#21.1

Patente extinta em 20/12/2000

07/15/2008

RPI 1958

20.4

04/06/1993

RPI 1166

Concessão da patente

#16.1

09/24/1991

RPI 1086

Deferimento

#9.1

04/16/1991

RPI 1063

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