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Legal status
Patent expired
| (51) | INT.CL.: (2006.01) |
F27D 21/00 B01J 3/00 C01B 17/00 G01F 23/02 G01P 13/00 |
| (11) | Number of the document | 4445 |
| (13) | Kind of document | B |
| (21) | Application number | 98-029 |
| (22) | Date of filing the application | 1998-03-06 |
| (41) | Date of publication of the application | 1998-09-25 |
| (45) | Date of publication of patent | 1999-01-25 |
| (86) | Number | PCT/US96/12978 |
| Date | 1996-08-09 |
| (87) | Number | WO 97/07051 |
| Date | 1997-02-27 |
| (30) | Number | Date | Country code |
| 502787 | 1995-08-11 | US |
| (71) |
Koch Enterprises, Inc.,
P.O.Box 8127 Wichita, Kansas 67208,
US
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| (72) |
George W. TAGGART, US
James E. LEWIS, US Craig S. WARD, US |
| (73) |
Koch Enterprises, Inc.,
P.O.Box 8127 Wichita, Kansas 67208,
US
|
| (74) |
Rita LAURINAVIČIŪTĖ,
Gedimino pr. 45-6, LT-01109 Vilnius,
LT
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| (54) | SEALED OBSERVATION ELEMENT FOR SULFUR RECOVERY UNIT |
| Payment date | Validity (years) | Amount | |
| 2015-07-20 | 20 | 347.00 EUR |
| Patent expired | ||
| Invalidation date | 2016-08-09 |