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Official data from INPI

PROCESSO PARA REFINAR UM PRODUTO CONSTITUÍDO DE UMA MISTURA BRUTA DE ALDEÍDOS

Arquivada/ExtintaInvention Patent

Application data

Number

PI9104837

Type

Invention Patent

Filing

11/06/1991

Publication

06/23/1992

Progress at the INPI

  1. Filing11/06/91
  2. Publication06/23/92
  3. Examination10/05/93
  4. Allowance04/20/99
  5. Grant09/08/99
  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

Dow Technology Investments LLC

US

Union Carbide Chemicals and Plastics Company Inc.

US

Union Carbide Chemicals & Plastics Technology LLC

US

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

K. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

611.080 · 11/09/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 06/11/2011

06/11/2013

RPI 2214

Transferência deferida

#25.1

Transferido de: Union Carbide Chemicals & Plastics Technology LLC

09/15/2009

RPI 2019

Transferência deferida

#25.1

Transferido de: Union Carbide Corporation

08/25/2009

RPI 2016

Alteração de nome deferida

#25.4

Alterado de: Union Carbide Chemicals and Plastics Company Inc.

08/04/2009

RPI 2013

Concessão da patente

#16.1

09/08/1999

RPI 1496

Deferimento

#9.1

04/20/1999

RPI 1476

Exigência - art. 36 da LPI

#6.1

09/16/1997

RPI 1398

Solicitação de exame técnico

#4.1

10/05/1993

RPI 1192

Publicação do pedido de patente

#3.1

06/23/1992

RPI 1125

Pedido de patente depositado

#2.1

12/10/1991

RPI 1097

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