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Official data from INPI

PROCESSO PARA REDUZIR A QUANTIDADE DE POLIÉSTERES DE PROPENILA EM POLIÉTERES COM FUNCIONALIDADE HIDRÓXI''.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9103019

Type

Invention Patent

Filing

07/10/1991

Publication

04/28/1992

Progress at the INPI

  1. Filing07/10/91
  2. Publication04/28/92
  3. Examination06/28/94
  4. Allowance08/24/99
  5. Grant05/30/00
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Dow Chemical Company

US

See this company's full portfolio

Inventors

C. M. (pessoa física)

US

J. J. (pessoa física)

US

R. P. (pessoa física)

US

R. G. (pessoa física)

US

V. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

554.054 · 07/13/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 10/07/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

05/30/2000

RPI 1534

Deferimento

#9.1

08/24/1999

RPI 1494

Exigência - art. 36 da LPI

#6.1

11/10/1998

RPI 1453

Solicitação de exame técnico

#4.1

06/28/1994

RPI 1230

Publicação do pedido de patente

#3.1

04/28/1992

RPI 1117

Pedido de patente depositado

#2.1

11/19/1991

RPI 1094

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