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Official data from INPI

PROCESSO DE DESCAROCAMENTO ALCALINO

ConcedidaInvention Patent

Application data

Number

PI7802728

Type

Invention Patent

Filing

05/02/1977

Publication

-

Progress at the INPI

  1. Filing05/02/77
  2. Publication
  3. Examination
  4. Allowance05/10/83
  5. Grant10/25/83
  6. Expired11/30/93

The letters patent expired on 11/30/1993: 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: 10/25/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. M. (pessoa física)

Inventors

F. A. (pessoa física)

F. P. (pessoa física)

H. V. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1983

RPI 679

Deferimento

#9.1

05/10/1983

RPI 655

Republicação - classificação IPC

#15.11

01/11/1983

RPI 638

Exigência - art. 36 da LPI

#6.1

09/08/1982

RPI 620

6.2

01/19/1982

RPI 587

Carta-patente expirada

#21.1

11/30/1993

RPI 1200

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