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Official data from INPI

ACRILONITRILA, METACRILONITRILA OU ÁCIDO CIANÍDRICO E RESPECTIVOS PROCESSOS DE RECUPERAÇÃO

ConcedidaInvention PatentPCT · US2001026104

Application data

Number

PI0117105

Type

Invention Patent

Filing

08/21/2001

Publication

08/17/2004

PCT

US2001026104

Progress at the INPI

  1. Filing08/21/01
  2. Publication08/17/04
  3. Examination
  4. Allowance04/26/16
  5. Grant06/28/16
  6. In force08/21/21

The patent was granted on 06/28/2016 and is in force until 08/21/2021. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:08/21/2021

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Latest action published by the INPI: 06/28/2016. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

The Standard Oil Company

US

See this company's full portfolio

Inventors

S. G. (pessoa física)

US

Technical data

Abstract

"ACRILONITRILA, METACRILONITRILA OU ÁCIDO CIANÍDRICO E RESPECTIVO PROCESSOS DE RECUPERAÇÃO". Processo para a recuperação e operação incrementada de coluna de frações leves de ácido cianídrico (HCN), obtido a partir do efluente do reator de uma reação de amoxidação de propano, propileno ou isobutileno, fazendo reduzir a formação de polímero acima da bandeja de alimentação na torre de frações leves.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/2016

RPI 2373

Deferimento

#9.1

04/26/2016

RPI 2364

Conhecimento de parecer técnico

#7.1

03/01/2011

RPI 2095

Notificação de entrada na fase nacional - PCT

#1.3

08/17/2004

RPI 1754

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