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Official data from INPI

PROCESSO E DISPOSITIVO VENTURI DE MEDIÇÃO DE VAZÃO

ConcedidaInvention Patent

Application data

Number

PI8400001

Type

Invention Patent

Filing

01/02/1984

Publication

08/14/1984

Progress at the INPI

  1. Filing01/02/84
  2. Publication08/14/84
  3. Examination12/11/84
  4. Allowance06/09/87
  5. Grant10/27/87
  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: 10/27/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

C. C. (pessoa física)

US

See this company's full portfolio

Inventors

W. C. (pessoa física)

Technical data

IPC Classification

Priority claims

US

456.633 · 01/07/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/27/1987

RPI 888

Deferimento

#9.1

06/09/1987

RPI 868

Exigência - art. 36 da LPI

#6.1

11/25/1986

RPI 840

Republicação - classificação IPC

#15.11

04/15/1986

RPI 808

Exigência - art. 36 da LPI

#6.1

03/25/1986

RPI 805

Solicitação de exame técnico

#4.1

12/11/1984

RPI 738

Publicação do pedido de patente

#3.1

08/14/1984

RPI 721

Pedido de patente depositado

#2.1

03/20/1984

RPI 700

Carta-patente expirada

#21.1

Patente extinta em 02/01/99

07/08/2008

RPI 1957

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