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Official data from INPI

Novos silicatos de teor elevado em sílica, notadamente silivatso de chumbo ou alcalino-terrosos, composição contendo os mesmos, processo para obter os mesmos e nova composição vitrificável.

ConcedidaInvention Patent

Application data

Number

PI8000954

Type

Invention Patent

Filing

02/15/1980

Publication

-

Progress at the INPI

  1. Filing02/15/80
  2. Publication
  3. Examination10/13/82
  4. Allowance09/25/84
  5. Grant04/30/85
  6. Terminated02/11/92

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

Rhone-Poulenc Industries

FR

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Inventors

R. C. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

79 04536 · 02/22/1979

FR

79 14408 · 06/06/1979

FR

7923176 · 09/18/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

01/29/1985

RPI 745

Deferimento

#9.1

09/25/1984

RPI 727

Exigência - art. 36 da LPI

#6.1

02/14/1984

RPI 695

Solicitação de exame técnico

#4.1

10/13/1982

RPI 625

Anuidade - prazo legal encerrado

#18.2

02/11/1992

RPI 1106

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