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Official data from INPI

Sílica utilizável como pigmento ou carga.

ConcedidaInvention Patent

Application data

Number

PI8008344

Type

Invention Patent

Filing

12/19/1980

Publication

-

Progress at the INPI

  1. Filing12/19/80
  2. Publication
  3. Examination08/30/83
  4. Allowance06/21/88
  5. Grant09/27/88
  6. Terminated08/09/94

The patent was granted on 09/27/1988 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: 09/27/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

L. R. (pessoa física)

M. J. (pessoa física)

M. J. (pessoa física)

V. G. (pessoa física)

Technical data

IPC Classification

Priority claims

FR

79 31217 · 12/20/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

100

06/21/1988

RPI 922

120

11/03/1987

RPI 889

Petição de recurso

#12.2

09/16/1986

RPI 830

Indeferimento

#9.2

06/17/1986

RPI 817

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Anuidade - prazo legal encerrado

#18.2

08/09/1994

RPI 1236

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