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Official data from INPI

processo para separação de alcl3 de uma mistura de gases que contém alcl3 e outros cloretos de metal, incluindo ticl4.

ConcedidaInvention Patent

Application data

Number

PI8003086

Type

Invention Patent

Filing

05/16/1980

Publication

-

Progress at the INPI

  1. Filing05/16/80
  2. Publication
  3. Examination11/10/81
  4. Allowance10/09/84
  5. Grant04/30/85
  6. Terminated07/26/94

The patent was granted on 04/30/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Aluminium Company Of America

US

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Inventors

J. R. (pessoa física)

S. J. (pessoa física)

T. U. (pessoa física)

W. D. (pessoa física)

Technical data

Priority claims

US

040.945 · 05/21/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Deferimento

#9.1

10/09/1984

RPI 729

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

Solicitação de exame técnico

#4.1

11/10/1981

RPI 577

Anuidade - prazo legal encerrado

#18.2

07/26/1994

RPI 1234

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