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Official data from INPI

PROCESSO PARA A PREPRAÇÃO DE UM MERCAPTANO DE ALQUILA LINEAR (C4-C18) DE ELEVADA PUREZA

ArquivadaInvention Patent

Application data

Number

PI9503288

Type

Invention Patent

Filing

07/12/1995

Publication

10/01/1996

Progress at the INPI

  1. Filing07/12/95
  2. Publication10/01/96
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 07/12/1995 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/14/2001. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Elf Atochem North America, Inc.

US

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Inventors

M. G. (pessoa física)

US

S. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

08/320,347 · 10/11/1994

Abstract

Patente de Invenção "PROCESSO PARA A PREPARAÇÃO DE UM MERCAPTANO DE ALQUILA LINEAR (C~ 4-18~) DE ELEVADA PUREZA". Os mercaptanos de alquila lineares C~ 4~+ de elevada pureza são preparados pela reação de um sulfeto de di-alquila linear (C~ 4~+) com sulfeto de hidrogênio em temperatura elevada na presença de um material de alumina de transição específica.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

08/14/2001

RPI 1597

Publicação do pedido de patente

#3.1

10/01/1996

RPI 1348

Pedido de patente depositado

#2.1

08/29/1995

RPI 1291

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