Official data from INPI

ISOLADOR DE PORCELANA DE ALTA TENSÃO.

Em AnáliseInvention Patent

Talk to an expert

Application data

Number

PI8401204

Type

Invention Patent

Filing

03/15/1984

Publication

10/23/1984

View on INPI

Progress at the INPI

Filing03/15/84
Publication10/23/84
Examination11/04/86
Allowance06/20/89
Grant09/25/90
Expired07/08/08

The letters patent expired on 07/08/2008: 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: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

NGK Insulators, Ltd..

See this company's full portfolio

Inventors

S. S. (pessoa física)

Y. M. (pessoa física)

Technical data

IPC Classification

H01B 17/50 H01B 3/08 H01B 3/12

Priority claims

42.418/83 · 03/16/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Recurso

#12.1

10/03/1989

RPI 989

Deferimento

#9.1

06/20/1989

RPI 974

6.2

09/08/1987

RPI 881

Solicitação de exame técnico

#4.1

11/04/1986

RPI 837

Publicação do pedido de patente

#3.1

10/23/1984

RPI 731

Pedido de patente depositado

#2.1

05/29/1984

RPI 710

Carta-patente expirada

#21.1

Patente extinta em 15/03/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

09/25/1990

RPI 1034

Notificação para pagamento de retribuição

#13.1

08/07/1990

RPI 1027

110

05/29/1990

RPI 1020

Same category

MICROFONE SEM FIO DOTADO DE CÂMARA DE RESSONÂNCIA.PI9917905 PI9917904 PI9917902 PI9917898 PI9917895 PI9917684 PI9917655

Explore category

Patent monitoring

Track this patent in real time.

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