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Official data from INPI

PROCESSO E APARELHO PARA MEDIR A CONCENTRAÇÃO DE UM LÍQUIDO.

ConcedidaInvention Patent

Application data

Number

PI7708722

Type

Invention Patent

Filing

12/28/1977

Publication

-

Progress at the INPI

  1. Filing12/28/77
  2. Publication
  3. Examination
  4. Allowance
  5. Grant03/30/82
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 03/30/1982. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. S. (pessoa física)

A. T. (pessoa física)

Inventors

M. R. (pessoa física)

M. G. (pessoa física)

V. P. (pessoa física)

Technical data

IPC Classification

Priority claims

DK

P: 5901/76 · 12/30/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/30/1982

RPI 597

Notificação para pagamento de retribuição

#13.1

10/06/1981

RPI 572

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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