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Official data from INPI

APERFEICOAMENTO EM UMA COMPOSICAO EXPANSIVEL E ESPONJA ELASTOMERICA DE CELULAS FECHADAS

Em AnáliseInvention Patent
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Application data

Number

PI8004529

Type

Invention Patent

Filing

07/26/1979

Publication

-
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Progress at the INPI

  1. Filing07/26/79
  2. Publication
  3. Examination
  4. Allowance08/11/87
  5. Grant02/23/88
  6. Terminated09/26/89

The patent was granted on 02/23/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT

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Inventors

V. A. (pessoa física)

Technical data

IPC Classification

C08F 136/18C08F 210/18C08J 9/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

09/26/1989

RPI 988

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

10/02/1984

RPI 728

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

6.2

11/30/1982

RPI 632

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