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Official data from INPI

PROCESSO PARA PREPARAR UM POLÍMERO EM EMULSÃO DE NÚCLEO-ENVOLTÓRIO RESISTENTE A ÁLCALI, E, PROCESSO PARA A POLIMERIZAÇÃO EM EMULSÃO

Arquivada/ExtintaInvention Patent

Application data

Number

PI9104031

Type

Invention Patent

Filing

09/20/1991

Publication

06/02/1992

Progress at the INPI

  1. Filing09/20/91
  2. Publication06/02/92
  3. Examination07/05/94
  4. Allowance07/27/99
  5. Grant12/28/99
  6. Expired06/11/13

The letters patent expired on 06/11/2013: 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: 06/11/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rohm And Haas Company

US

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Inventors

D. L. (pessoa física)

US

M. F. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

07/587,199 · 09/24/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 20/09/2011

06/11/2013

RPI 2214

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

07/27/1999

RPI 1490

Exigência - art. 36 da LPI

#6.1

12/01/1998

RPI 1456

Solicitação de exame técnico

#4.1

07/05/1994

RPI 1231

Publicação do pedido de patente

#3.1

06/02/1992

RPI 1122

Pedido de patente depositado

#2.1

10/29/1991

RPI 1091

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