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Official data from INPI

PROCESSOS PARA PRODUÇÃO DE POLITIOÉTER LÍQUIDO E PROCESSO PARA PRODUÇÃO DE MONÔMEROS DIHIDROXI.

PublicadaInvention Patent
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Application data

Number

PI8602447

Type

Invention Patent

Filing

05/28/1986

Publication

12/29/1987
View on INPI

Progress at the INPI

  1. Filing05/28/86
  2. Publication12/29/87
  3. Examination08/07/90
  4. Allowance07/20/93
  5. Grant02/16/94
  6. Expired07/22/08

The letters patent expired on 07/22/2008: 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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Courtaulds Aerospace,Inc.

US

P. C. (pessoa física)

US

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Inventors

H. S. (pessoa física)

US

J. Z. (pessoa física)

US

L. M. (pessoa física)

US

Technical data

IPC Classification

C08G 75/04

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/29/1987

RPI 897

Pedido de patente depositado

#2.1

11/25/1986

RPI 840

Carta-patente expirada

#21.1

Patente extinta em 28/05/2001

07/22/2008

RPI 1959

Concessão da patente

#16.1

02/16/1994

RPI 1211

14.4

08/24/1993

RPI 1186

14.7

08/24/1993

RPI 1186

Deferimento

#9.1

07/20/1993

RPI 1181

Exigência - art. 36 da LPI

#6.1

11/05/1991

RPI 1092

Exigência - art. 36 da LPI

#6.1

05/07/1991

RPI 1066

Solicitação de exame técnico

#4.1

08/07/1990

RPI 1027

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