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Official data from INPI

SENSOR DE NÍVEL

ConcedidaInvention Patent

Application data

Number

PI8406392

Type

Invention Patent

Filing

12/13/1984

Publication

06/24/1986

Progress at the INPI

  1. Filing12/13/84
  2. Publication06/24/86
  3. Examination09/15/87
  4. Allowance01/17/89
  5. Grant09/26/89
  6. 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: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Goema Engenharia Indústria e Comércio Ltda.

SP, BR

Inventors

W. R. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Notificação para pagamento de retribuição

#13.1

05/30/1989

RPI 971

Deferimento

#9.1

01/17/1989

RPI 952

Solicitação de exame técnico

#4.1

09/15/1987

RPI 882

Publicação do pedido de patente

#3.1

06/24/1986

RPI 818

Pedido de patente depositado

#2.1

03/05/1985

RPI 750

Carta-patente expirada

#21.1

Patente extinta em 13/12/99

07/08/2008

RPI 1957

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