US3726706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchanger packing
Assignee: Carl Munters AB
•
Filing: 1970-02-11
•
Granted: 1973-04-10
•
Expires: 1990-02-11
Abstract
Abstract EXCHANGER PACKINGS OF CORRUGATED LAMINATED ASBESTOS THROUGH WHICH GASES ARE PASSED FOR HEAT OR MOISTURE EXCHANGE ARE STRENGTHENED BY DIPPING THE FIBER BOARD SHEETS, OR PACKING FORMED FROM SUCH SHEETS, INTO AN INORGANIC SOLUBLE SALT SOLUTION, THE EXCESS LIQUID BEING DRAINED AND THEN PRECIPITATING THE SALT COMPONENT UPON THEFIBRES OF THE PACKING BY REACTING WITH A GASEOUS MEDIUM. THE INORGANIC SALT IS TYPICALLY WATER GLASS, AND THE PRECIPITATING GAS IS TYPICALLY CARBON DIOXIDE, SULFUR TRIOXIDE, CHLORINE OR THE LIKE.
Inventors
- 👤 O Glav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:56
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; D; D06; D06M; D06M11/00; D06M11/07; D06M11/09; D06M11/11; D06M11/155; D06M11/51; D06M11/55; D06M11/68; D06M11/70; D06M11/77; D06M11/79; F24F13/00; F24F13/30; F24F2003/1458; F24F2003/1464; F24F2203/00; F24F2203/10; F24F2203/1032; F24F2203/1036; F24F2203/104; F24F2203/1048; F24F2203/1072
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |