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Official data from INPI

PROCESSOS PARA PREPARAR UM CONDENSADO DE MANNICH ALCOXILADO E UMA ESPUMA DE POLIURETANO

Prazo de SigiloInvention Patent

Application data

Number

PI8903799

Type

Invention Patent

Filing

07/25/1989

Publication

03/20/1990

Progress at the INPI

  1. Filing07/25/89
  2. Publication03/20/90
  3. Examination04/07/92
  4. Allowance01/05/99
  5. Grant08/10/99
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 11/07/1989. 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

J. T. (pessoa física)

NL

J. M. (pessoa física)

NL

M. G. (pessoa física)

CH

Technical data

Priority claims

US

225.313 · 07/27/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

11/07/1989

RPI 994

Carta-patente expirada

#21.1

Patente extinta em 10/08/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

08/10/1999

RPI 1492

Deferimento

#9.1

De acordo com o artigo 229 da LPI nº 9279 de 14/5/96.

01/05/1999

RPI 1461

Exigência - art. 36 da LPI

#6.1

05/26/1998

RPI 1431

Exigência - art. 36 da LPI

#6.1

05/23/1995

RPI 1277

Solicitação de exame técnico

#4.1

04/07/1992

RPI 1114

Publicação do pedido de patente

#3.1

03/20/1990

RPI 1010

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