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Official data from INPI

PROCESSO PARA PREPARAÇÃO DE UMA ESPUMA A BASE DE POLIISOCIANATO RÍGIDA DE CÉLULA FECHADA.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002194

Type

Invention Patent

Filing

05/08/1990

Publication

08/13/1991

Progress at the INPI

  1. Filing05/08/90
  2. Publication08/13/91
  3. Examination08/03/93
  4. Allowance03/23/99
  5. Grant08/24/99
  6. Expired01/15/13

The letters patent expired on 01/15/2013: 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: 01/15/2013. 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

G. S. (pessoa física)

BE

H. G. (pessoa física)

NL

Technical data

IPC Classification

Priority claims

US

350.174 · 05/10/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 08/05/2010

01/15/2013

RPI 2193

Republicação - classificação IPC

#15.11

Alterado da Int Cl5 C08K 5/02; C08G 8/14; C08J 9/04.

11/21/2000

RPI 1559

Concessão da patente

#16.1

08/24/1999

RPI 1494

Deferimento

#9.1

03/23/1999

RPI 1472

Exigência - art. 36 da LPI

#6.1

06/16/1998

RPI 1434

Exigência - art. 36 da LPI

#6.1

12/12/1995

RPI 1306

Solicitação de exame técnico

#4.1

08/03/1993

RPI 1183

Publicação do pedido de patente

#3.1

08/13/1991

RPI 1080

Pedido de patente depositado

#2.1

09/25/1990

RPI 1034

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