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Official data from INPI

APERFEIÇOAMENTOS EM CAPTORES CAPACITIVOS DIFERENCIAIS PARA DETECTOR DE VAZAMENTO DE GÁS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9005369

Type

Invention Patent

Filing

10/18/1990

Publication

06/16/1992

Progress at the INPI

  1. Filing10/18/90
  2. Publication06/16/92
  3. Examination04/27/93
  4. Allowance10/11/94
  5. Grant06/27/95
  6. Expired06/08/10

The letters patent expired on 06/08/2010: 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: 06/08/2010. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. M. (pessoa física)

SP, BR

Inventors

M. M. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 18/10/2005

06/08/2010

RPI 2057

Concessão da patente

#16.1

06/27/1995

RPI 1282

Notificação para pagamento de retribuição

#13.1

02/21/1995

RPI 1264

Deferimento

#9.1

10/11/1994

RPI 1245

Solicitação de exame técnico

#4.1

04/27/1993

RPI 1169

Publicação do pedido de patente

#3.1

06/16/1992

RPI 1124

Pedido de patente depositado

#2.1

04/16/1991

RPI 1063

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