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Official data from INPI

ESPUMA TERMOPLÁSTICA, MISTURA ESPUMÁVEL E PROCESSO PARA PRODUZIR UMA ESPUMA

Arquivada/ExtintaInvention Patent

Application data

Number

PI9003770

Type

Invention Patent

Filing

08/01/1990

Publication

09/03/1991

Progress at the INPI

  1. Filing08/01/90
  2. Publication09/03/91
  3. Examination09/21/93
  4. Allowance08/15/00
  5. Grant12/26/00
  6. Expired01/22/13

The letters patent expired on 01/22/2013: 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: 01/22/2013. 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. W. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

388.468 · 08/02/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/12/2010

01/22/2013

RPI 2194

Concessão da patente

#16.1

12/26/2000

RPI 1564

Republicação - classificação IPC

#15.11

Alterada a classificação para Int. Cl. 6 C08J 9/12.

08/15/2000

RPI 1545

Deferimento

#9.1

08/15/2000

RPI 1545

Exigência - art. 36 da LPI

#6.1

05/04/1999

RPI 1478

Exigência - art. 36 da LPI

#6.1

09/16/1997

RPI 1398

Solicitação de exame técnico

#4.1

09/21/1993

RPI 1190

Publicação do pedido de patente

#3.1

09/03/1991

RPI 1083

Pedido de patente depositado

#2.1

02/05/1991

RPI 1053

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