Plant for purifying water contaminated by droplets of hydrocarbonaceous liquid
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Nov 4, 2008
Grant Date -
Sep 27, 2007
app pub date -
Aug 7, 2001
filing date -
Aug 8, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A unit for purifying water contaminated by droplets of hydrocarbonaceous liquid has an essentially vertically positioned filter, an inlet chamber for the contaminated water that is partially defined by a first vertical surface of the filter, supply means for contaminated water debouching in the lower portion of the inlet chamber, and outlet means connected to the upper portion of the inlet chamber for discharging hydrocarbonaceous liquid separated from the water in the inlet chamber. The operational period between filter cleaning and/or the hourly capacity of the filter is increased by injecting fine gas bubbles into the contaminated water in least one location selected from locations in the lower portion of the inlet chamber and locations in the supply means to produce a stream of gas bubbles upwards along the first vertical filter surface.
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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SCHLUMBERGER NORGE AS | 4056 TANANGER |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Oserod, Stein Egil | Kingscliff, AU | 5 | 37 |
# of filed Patents : 5 Total Citations : 37 |
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- 0 Citation Count
- B01D Class
- 0 % this patent is cited more than
- 17 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
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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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Dec 05, 2016 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Nov 04, 2016 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Nov 04, 2016 |
Nov 04, 2016 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jun 17, 2016 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Apr 11, 2012 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Apr 28, 2011 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:M-I EPCON AS;REEL/FRAME:026407/0289 Owner name: SCHLUMBERGER NORGE AS, NORWAY Effective Date: Apr 28, 2011 |
Nov 04, 2008 | I | Issuance | |
Sep 27, 2007 | P | Published | |
Apr 04, 2006 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AS, EPCON NORGE;REEL/FRAME:018330/0820 Owner name: M-I EPCON AS, NORWAY Effective Date: Apr 04, 2006 |
Mar 27, 2003 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OSEROD, STEIN EGIL;REEL/FRAME:014398/0214 Owner name: EPCON NORGE AS, NORWAY Effective Date: Mar 27, 2003 |
Aug 07, 2001 | F | Filing | |
Aug 08, 2000 | PD | Priority Date |

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