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Official data from INPI

Alumina altamente reativa e seu processo de preparação.

ConcedidaInvention Patent

Application data

Number

PI7904711

Type

Invention Patent

Filing

07/24/1979

Publication

-

Progress at the INPI

  1. Filing07/24/79
  2. Publication
  3. Examination04/06/82
  4. Allowance12/04/84
  5. Grant05/28/85
  6. Terminated07/27/93

The patent was granted on 05/28/1985 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: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

See this company's full portfolio

Inventors

P. M. (pessoa física)

S. L. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

78 22095 · 07/26/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/28/1985

RPI 762

Notificação para pagamento de retribuição

#13.1

04/09/1985

RPI 755

Deferimento

#9.1

12/04/1984

RPI 737

Exigência - art. 36 da LPI

#6.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

02/01/1983

RPI 641

Pedido de certificado de adição de invenção

#5.1

09/08/1982

RPI 620

Solicitação de exame técnico

#4.1

04/06/1982

RPI 598

Anuidade - prazo legal encerrado

#18.2

07/27/1993

RPI 1182

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