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Official data from INPI

PROCESSO PARA PREPARAR UMA ESPUMA DE POLIURETANA MOLDADA OU EM FORMA DE PLACA DE ALTA RESILIÊNCIA.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9002834

Type

Invention Patent

Filing

06/15/1990

Publication

08/20/1991

Progress at the INPI

  1. Filing06/15/90
  2. Publication08/20/91
  3. Examination08/17/93
  4. Allowance08/11/98
  5. Grant12/29/98
  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

R. T. (pessoa física)

US

R. H. (pessoa física)

US

R. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

367.279 · 06/16/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 15/06/2010

01/15/2013

RPI 2193

Concessão da patente

#16.1

12/29/1998

RPI 1460

Deferimento

#9.1

Deferido de acordo com o artigo 229 da Lei 9279 de 14/05/96.

08/11/1998

RPI 1442

Exigência - art. 36 da LPI

#6.1

02/27/1996

RPI 1317

Solicitação de exame técnico

#4.1

08/17/1993

RPI 1185

Publicação do pedido de patente

#3.1

08/20/1991

RPI 1081

Pedido de patente depositado

#2.1

10/30/1990

RPI 1039

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