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Official data from INPI

APERFEIÇOAMENTOS INTRODUZIDOS EM ESPOLETA ELÉTRICA DE ALTA PRESSÃO E SEGURANÇA PARA USO PETROLÍFERO

Em AnáliseInvention Patent

Application data

Number

PI8505393

Type

Invention Patent

Filing

10/24/1985

Publication

06/02/1987

Progress at the INPI

  1. Filing10/24/85
  2. Publication06/02/87
  3. Examination11/10/87
  4. Allowance08/01/89
  5. Grant05/29/90
  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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Britanite S/A Indústrias Químicas

PR, BR

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Inventors

V. O. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

11/28/1989

RPI 997

Deferimento

#9.1

08/01/1989

RPI 980

Solicitação de exame técnico

#4.1

11/10/1987

RPI 890

Publicação do pedido de patente

#3.1

06/02/1987

RPI 867

Pedido de patente depositado

#2.1

01/14/1986

RPI 795

Carta-patente expirada

#21.1

Patente extinta em 24/10/2000

07/15/2008

RPI 1958

20.4

05/07/1991

RPI 1066

Concessão da patente

#16.1

05/29/1990

RPI 1020

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