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Official data from INPI

APERFEIÇOAMENTOS NOS MEIOS DE REGULAGEM GRADUAL E SELETIVA DOS MICRORRUPTORES DE TERMOMETROS DE EXPANSÃO À MERCÚRIO

PublicadaInvention Patent

Application data

Number

PI8804276

Type

Invention Patent

Filing

08/23/1988

Publication

04/11/1989

Progress at the INPI

  1. Filing08/23/88
  2. Publication04/11/89
  3. Examination01/16/90
  4. Allowance11/23/93
  5. Grant10/25/94
  6. Expired09/02/08

The letters patent expired on 09/02/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 04/11/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Fábrica de Manômetros Record S/A

SP, BR

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Inventors

A. S. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação antecipada

#3.2

04/11/1989

RPI 964

Pedido de patente depositado

#2.1

01/31/1989

RPI 954

Carta-patente expirada

#21.1

Patente extinta em 23/08/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

04/12/1994

RPI 1219

Deferimento

#9.1

11/23/1993

RPI 1199

Solicitação de exame técnico

#4.1

01/16/1990

RPI 1002

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