Patent details

Basic Information

Publication number:

EP0966419

PCT Application Number:

PCT/US/98/24584

Type:

European Patent Granted for LU

Legal Status:

Lapsed

Application number:

EP989586268

PCT Publication Number:

WO/99/28283

First applicant's nationality:

Translation Language:

EPO Publication Language:

English

English Title of Invention:

PROCESS FOR MAKING ISOPHORONE WITH IMPROVED COLOR AND COLOR STABILITY

French Title of Invention:

PROCEDE DE FABRICATION D'ISOPHORONE PRESENTANT UNE QUALITE ET UNE STABILITE DE COULEUR AMELIOREES

German Title of Invention:

VERFAHREN ZUR HERSTELLUNG VON ISOPHORON MIT VERBESSERTER FARBE UND FARBSTABILITÄT.

SPC Number:

Dates

Filing date:

18/11/1998

Grant date:

31/07/2002

EP Publication Date:

31/07/2002

PCT Publication Date:

10/06/1999

Claims Translation Received Date:

Translations Received Date (B1 EP Publication):

Translations Received Date (B2 EP Publication):

Translations Received Date (B3 EP Publication):

Publication date:

29/12/1999

EP B1 Publication Date:

31/07/2002

EP B2 Publication Date:

EP B3 Publication Date:

Lapsed date:

18/11/2002

Expiration date:

28/06/2020

Renunciation date:

Revocation date:

Annulment date:

Owner

From:

18/11/1998

 

 

Name:

Aristech Chemical Corporation

Address:

USX Building, Room 1185 11th floor, 600 Grant Street, Pittsburgh, PA 15219-2704, United States (US)

Inventor

1

Name:

KELKAR Chandrashekhar, P.

Address:

United States (US)

2

Name:

SCHULZ Alain, A.

Address:

Belgium (BE)

Priority

Priority Number:

984117

Priority Date:

03/12/1997

Priority Country:

United States (US)

Classification

Main IPC Class:

C07C 45/78;

Filing date	Document type	Number of pages