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Official data from INPI

PROCESSO PARA PREPARAR UM FILAMENTO OU PELÍCULA DE SPANDEX A BASE DE POLIÉSTER.

Em AnáliseInvention Patent

Application data

Number

PI8705020

Type

Invention Patent

Filing

09/29/1987

Publication

05/24/1988

Progress at the INPI

  1. Filing09/29/87
  2. Publication05/24/88
  3. Examination10/24/89
  4. Allowance03/01/94
  5. Grant10/25/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

G. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

913.406 · 09/30/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/24/1989

RPI 992

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

12/22/1987

RPI 896

Carta-patente expirada

#21.1

Patente extinta em 29/09/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

10/25/1994

RPI 1247

Notificação para pagamento de retribuição

#13.1

06/14/1994

RPI 1228

Deferimento

#9.1

03/01/1994

RPI 1213

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