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Official data from INPI

SISTEMA E PROCESSO PARA MEDIR A CONCENTRACAO DE UM GAS NUMA CORRENTE DE VAZAO DE GASES

ConcedidaInvention Patent

Application data

Number

PI8009122

Type

Invention Patent

Filing

11/24/1980

Publication

10/13/1982

Progress at the INPI

  1. Filing11/24/80
  2. Publication10/13/82
  3. Examination05/02/84
  4. Allowance07/09/85
  5. Grant03/25/86
  6. Expired12/26/95

The letters patent expired on 12/26/1995: 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M. C. (pessoa física)

US

Inventors

P. [. (pessoa física)

S. [. (pessoa física)

V. [. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

11/12/1985

RPI 786

Deferimento

#9.1

07/09/1985

RPI 768

Exigência - art. 36 da LPI

#6.1

10/23/1984

RPI 731

Solicitação de exame técnico

#4.1

05/02/1984

RPI 706

Notificação de entrada na fase nacional - PCT

#1.3

10/13/1982

RPI 625

Carta-patente expirada

#21.1

12/26/1995

RPI 1308

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