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Official data from INPI

PROCESSO PARA SEPARAÇÃO DE ÁLCOOL DE UMA CARGA MISTA E PROCESSO APERFEIÇOADO PARA PREPARAR ÁLCOOIS

Arquivada/ExtintaInvention PatentPCT · US1988000287

Application data

Number

PI8807348

Type

Invention Patent

Filing

02/01/1988

Publication

03/01/1990

PCT

US1988000287

Progress at the INPI

  1. Filing02/01/88
  2. Publication03/01/90
  3. Examination08/14/90
  4. Allowance06/22/99
  5. Grant12/28/99
  6. Expired12/11/12

The letters patent expired on 12/11/2012: 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: 12/11/2012. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Chemical Patents, Inc

US

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Inventors

A. C. (pessoa física)

CA

J. B. (pessoa física)

US

W. D. (pessoa física)

US

Technical data

Priority claims

US

009,794 · 02/02/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Carta-patente expirada

#21.1

Patente extinta em 28/12/2009

12/11/2012

RPI 2188

Concessão da patente

#16.1

12/28/1999

RPI 1512

Deferimento

#9.1

06/22/1999

RPI 1485

Exigência - art. 36 da LPI

#6.1

02/02/1999

RPI 1465

Solicitação de exame técnico

#4.1

08/14/1990

RPI 1028

Notificação de entrada na fase nacional - PCT

#1.3

03/01/1990

RPI 1007

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