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Official data from INPI

MÉTODO DE FABRICAÇÃO DE FIBRAS QUE CONTÊM POLIBENZOBISOXAZOL

ArquivadaInvention PatentPCT · US2006026869

Application data

Number

PI0613814

Type

Invention Patent

Filing

07/12/2006

Publication

02/15/2011

PCT

US2006026869

Progress at the INPI

  1. Filing07/12/06
  2. Publication02/15/11
  3. Examination
  4. Allowance12/27/16
  5. Abandoned
  6. In force

The application was allowed on 12/27/2016 but abandoned for failure to pay the grant fee (art. 38 of the Brazilian IP Act). The letters patent were never issued.

Talk to a specialist

Latest action published by the INPI: 04/18/2017. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

E.I Du Pont de Nemours And Company

US

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Inventors

K. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

11/180,239 · 07/13/2005

Abstract

MÉTODO DE FABRICAÇÃO DE FIBRAS QUE CONTÊMPOLIBENZOBISOXAZOL A presente invenção refere-se a um método de fabricação de fibra que contém polibenzobisoxazol utilizando pol~mero não de polibenzobisoxazol, hidroxilação do polímero, formação do polímero em forma de fibra e aquecimento da fibra em que ocorre fechamento de anéis no polímero hidroxilado.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 38 §2° da LPI

#11.4

04/18/2017

RPI 2415

Deferimento

#9.1

12/27/2016

RPI 2399

Notificação de entrada na fase nacional - PCT

#1.3

02/15/2011

RPI 2093

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