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Official data from INPI

PROCESSO DE OBTENÇÃO DE UM PIGMENTO À BASE DE SÍLICA PRECIPITADA PARA SER UTILIZADO COMO CARGA REFORÇANTE EM ELASTÔMEROS.

Em AnáliseInvention Patent

Application data

Number

PI8002275

Type

Invention Patent

Filing

04/11/1980

Publication

-

Progress at the INPI

  1. Filing04/11/80
  2. Publication
  3. Examination11/09/82
  4. Allowance09/11/90
  5. Grant10/30/90
  6. Expired06/06/95

The letters patent expired on 06/06/1995: 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: 08/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rhone-Poulenc Industries

FR

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Inventors

J. R. (pessoa física)

FR

M. C. (pessoa física)

FR

Technical data

IPC Classification

Priority claims

FR

79.09403 · 04/13/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Petição de recurso

#12.2

08/08/1989

RPI 981

Indeferimento

#9.2

04/25/1989

RPI 966

Conhecimento de parecer técnico

#7.1

12/31/1985

RPI 793

Pedido de certificado de adição de invenção

#5.1

04/19/1983

RPI 652

Solicitação de exame técnico

#4.1

11/09/1982

RPI 629

Carta-patente expirada

#21.1

06/06/1995

RPI 1279

Concessão da patente

#16.1

10/30/1990

RPI 1039

100

09/11/1990

RPI 1032

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