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Official data from INPI

PROCESSO PARA PREPARAR UM CATALISADOR DE POLIMERIZAÇÃO POR ADIÇÃO E USO DE UM CATALISADOR

Arquivada/ExtintaInvention Patent

Application data

Number

PI9102815

Type

Invention Patent

Filing

06/27/1991

Publication

02/04/1992

Progress at the INPI

  1. Filing06/27/91
  2. Publication02/04/92
  3. Examination05/03/94
  4. Allowance07/27/99
  5. Grant02/22/00
  6. Expired06/04/13

The letters patent expired on 06/04/2013: 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: 06/04/2013. 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. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

547.718 · 07/03/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 27/06/2011

06/04/2013

RPI 2213

Concessão da patente

#16.1

02/22/2000

RPI 1520

Deferimento

#9.1

OBS: DEFERIDO DE ACORDO COM A LEI 9279 DE 14/05/96.

07/27/1999

RPI 1490

Exigência - art. 36 da LPI

#6.1

11/03/1998

RPI 1452

Solicitação de exame técnico

#4.1

05/03/1994

RPI 1222

Publicação do pedido de patente

#3.1

02/04/1992

RPI 1105

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