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Official data from INPI

PROCESSO PARA INTERRUPÇÃO DE UMA POLIMERIZAÇÃO VIA RADICAL LIVRE DE UM DIENO CONJUGADO E OPCIONALMENTE UM AROMÁTICO VINIL-SUBSTITUÍDO.

Arquivada/ExtintaInvention Patent

Application data

Number

PI9100038

Type

Invention Patent

Filing

01/07/1991

Publication

10/22/1991

Progress at the INPI

  1. Filing01/07/91
  2. Publication10/22/91
  3. Examination12/06/94
  4. Allowance01/05/99
  5. Grant07/27/99
  6. Expired05/28/13

The letters patent expired on 05/28/2013: 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: 05/28/2013. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Shell Internationale Research Maatschappij B.V

NL

See this company's full portfolio

Inventors

J. W. (pessoa física)

US

S. V. (pessoa física)

US

Technical data

IPC Classification

Priority claims

GB

9000436.7 · 01/09/1990

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 07/01/2011

05/28/2013

RPI 2212

Concessão da patente

#16.1

07/27/1999

RPI 1490

Deferimento

#9.1

01/05/1999

RPI 1461

Exigência - art. 36 da LPI

#6.1

07/21/1998

RPI 1439

Solicitação de exame técnico

#4.1

12/06/1994

RPI 1253

15.20

10/04/1994

RPI 1244

3.4

08/16/1994

RPI 1237

11.8

07/26/1994

RPI 1234

Arquivamento - Art. 33 da LPI

#11.1

06/28/1994

RPI 1230

Publicação do pedido de patente

#3.1

10/22/1991

RPI 1090

Pedido de patente depositado

#2.1

07/30/1991

RPI 1078

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