PROCESS FOR THE PURIFICATION OF A CYCLOHEXANE AIR OXIDATION PRODUCT STREAM
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Aug 20, 2015
app pub date -
Jul 19, 2012
filing date -
Jul 19, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method is disclosed for removing contaminants from a feed stream to a hydrogenation process that begins with providing a product mixture from an air oxidation reaction. A first liquid separation process and cooling procedure is used on the product mixture to form a cooled product mixture and a first vapor stream. The cooled product mixture is then subjected to a water wash to form a washed product mixture and an aqueous exit stream, wherein a majority of the water soluble other oxidation products from the cooled product mixture are present in the aqueous exit stream. Next, the washed product stream undergoes a second liquid separation and water removal to form a treated product mixture and a second vapor stream. Finally, the treated product mixture is recovered and can be fed to a hydrogenation process.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
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INVISTA NORTH AMERICA S A R L | 2801 CENTERVILLE ROAD THREE LITTLE FALLS CENTRE/1052 WILMINGTON DE 19808 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Valdez, David Lee | Victoria, US | 3 | 10 |
# of filed Patents : 3 Total Citations : 10 |
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- 10 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Feb 20, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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Sep 08, 2014 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Aug 13, 2014 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Aug 13, 2014 |
Aug 13, 2014 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Mar 21, 2014 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Feb 09, 2010 | FPAY | FEE PAYMENT | year of fee payment: 8 |
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Dec 27, 2005 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Nov 02, 2004 | FEPP | FEE PAYMENT PROCEDURE | free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
Aug 13, 2002 | I | Issuance | |
Aug 18, 2000 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHAE, SOO-CHOEL;KIM, JIN;YU, BYUNG-SEOK;AND OTHERS;REEL/FRAME:011300/0352 Owner name: HANKUK GLASS INDUSTRIES INC., KOREA, REPUBLIC OF Effective Date: Aug 18, 2000 |
Jun 26, 2000 | F | Filing | |
Dec 26, 1997 | PD | Priority Date |

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