US3583910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hard water treatment
Assignee: Honeywell International Inc
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Filing: 1969-02-19
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Granted: 1971-06-08
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Expires: 1989-02-19
Abstract
Abstract OBJECTIONALBLE PRECIPITABLE COMPOUNDS ARE REMOVED FROM WATER BY BRINGING THE WATER TO A CONDITION OF LABILE SUPERSATURATION THROUGH AN APPROPRIATE HEATING PROCEDURE THE CONDITIONS ARE CONTROLLED IN ORDER THAT THE SOLIDS MAY BE PRECIPITATED SPONTANEOUSLY AT A SELECTED TIME OR PLACE IN SUCH A WAY THAT THEY DO NOT FORM AS A SCALE IN THE EQUIPMENT AND ARE THEN SEPARATED FROM THE WATER.
Inventors
- 👤 Xerxes T Stoddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/042
Claims Analysis
Total Claims: 0
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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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |