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Official data from INPI

APERFEIÇOAMENTO EM FIEIRA PARA A PRODUÇÃO DE FILAMENTOS

Em AnáliseInvention Patent

Application data

Number

PI8505705

Type

Invention Patent

Filing

11/12/1985

Publication

08/12/1986

Progress at the INPI

  1. Filing11/12/85
  2. Publication08/12/86
  3. Examination09/20/88
  4. Allowance10/30/90
  5. Grant05/28/91
  6. Terminated08/15/95

The patent was granted on 05/28/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 10/03/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DU PONT [US]

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Inventors

O. H. (pessoa física)

US

R. D. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

671.920 · 11/15/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Conhecimento de parecer técnico

#7.1

10/03/1989

RPI 989

Solicitação de exame técnico

#4.1

09/20/1988

RPI 935

Publicação do pedido de patente

#3.1

08/12/1986

RPI 825

Pedido de patente depositado

#2.1

01/21/1986

RPI 796

Anuidade - prazo legal encerrado

#18.2

08/15/1995

RPI 1289

Concessão da patente

#16.1

05/28/1991

RPI 1069

Notificação para pagamento de retribuição

#13.1

02/13/1991

RPI 1054

Deferimento

#9.1

10/30/1990

RPI 1039

Exigência - art. 36 da LPI

#6.1

04/03/1990

RPI 1012

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