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Official data from INPI

PROCESSO PARA PREPARAR UM PRODUTO DE REAÇÃO DE AMINA EPÓXIDO NÃO GELEIFICADO

Arquivada/ExtintaInvention Patent

Application data

Number

PI8905474

Type

Invention Patent

Filing

10/26/1989

Publication

05/29/1990

Progress at the INPI

  1. Filing10/26/89
  2. Publication05/29/90
  3. Examination09/11/90
  4. Allowance06/09/98
  5. Grant11/24/98
  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: 12/26/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Imperial Chemical Industries PLC

GB

PPG INDUSTRIES OHIO, INC.

US

See this company's full portfolio

Inventors

R. R. (pessoa física)

US

Technical data

Priority claims

GB

8825315.8 · 10/28/1988

GB

8921423.3 · 09/22/1989

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 26/10/2009

12/26/2012

RPI 2190

Transferência deferida

#25.1

Transferido de Imperial Chemical Industries PLC.

02/20/2001

RPI 1572

Concessão da patente

#16.1

11/24/1998

RPI 1455

Deferimento

#9.1

06/09/1998

RPI 1433

Exigência - art. 36 da LPI

#6.1

02/27/1996

RPI 1317

Exigência - art. 36 da LPI

#6.1

07/18/1995

RPI 1285

Solicitação de exame técnico

#4.1

09/11/1990

RPI 1032

Publicação do pedido de patente

#3.1

05/29/1990

RPI 1020

Pedido de patente depositado

#2.1

03/01/1990

RPI 1007

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