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Official data from INPI

MÉTODO DE PURIFICAR ÓXIDO DE PROPILENO

ConcedidaInvention PatentPCT · US2011030539

Application data

Number

112012024560

Type

Invention Patent

Filing

03/30/2011

Publication

09/26/2017

PCT

US2011030539

Progress at the INPI

  1. Filing03/30/11
  2. Publication09/26/17
  3. Examination
  4. Allowance04/03/18
  5. Grant05/22/18
  6. In force03/30/31

The patent was granted on 05/22/2018 and is in force until 03/30/2031. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:03/30/2031

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Latest action published by the INPI: 05/22/2018. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Lyondell Chemical Technology, L.P.

US

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Inventors

B. S. (pessoa física)

US

L. C. (pessoa física)

US

X. L. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

12/798,297 · 04/01/2010

Abstract

PURIFICAÇÃO DE ÓXIDO DE PROPILENO. A invenção é um método de purificar óxido de propileno contendo 25 a 100 ppm de impurezas de aldeído. O método compreende contactar o óxido de propileno na fase líquida commuma resina de permuta de íon funcionalizada por amina, e recuperar um produto de óxido de propileno purificado contendo 10 ppm, ou menos, de aldeídos.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

05/22/2018

RPI 2472

Deferimento

#9.1

04/03/2018

RPI 2465

Conhecimento de parecer técnico

#7.1

01/30/2018

RPI 2456

Notificação de entrada na fase nacional - PCT

#1.3

09/26/2017

RPI 2438

Alteração de dados cadastrais

#1.1

06/25/2013

RPI 2216

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