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Official data from INPI

PRODUTO TANDO SUPERFICIE FIBRILAR, PROCESSO PARA PREPARAR UM PRODUTO E, PROCESSO PARA INCORPORAÇÃO DE UM PRODUTO DE SUPERFÍCIE FIBRILAR

ConcedidaInvention Patent

Application data

Number

PI7906529

Type

Invention Patent

Filing

10/10/1979

Publication

-

Progress at the INPI

  1. Filing10/10/79
  2. Publication
  3. Examination08/31/82
  4. Allowance10/25/83
  5. Grant04/24/84
  6. Expired04/25/95

The letters patent expired on 04/25/1995: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 04/24/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries Plc.

GB

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Inventors

A. D. (pessoa física)

Technical data

Priority claims

GB

40028/78 · 10/10/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/24/1984

RPI 705

Notificação para pagamento de retribuição

#13.1

02/07/1984

RPI 694

Deferimento

#9.1

10/25/1983

RPI 679

Exigência - art. 36 da LPI

#6.1

04/19/1983

RPI 652

Solicitação de exame técnico

#4.1

08/31/1982

RPI 619

Carta-patente expirada

#21.1

04/25/1995

RPI 1273

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