US2556128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for removing scale
Assignee: Individual
•
Filing: 1945-08-17
•
Granted: 1951-06-05
•
Expires: 1965-08-17
Abstract
No abstract record available.
Inventors
- 👤 Thomas L B Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:43
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE METHOD OF REMOVING WATER DEPOSITED SCALE FROM THE SURFACE OF A WATER CONTAINER WHICH INCLUDES THE STEPS OF REMOVING THE SCALE FROM THE SURFACE BY PASSING HYDROGEN ZEOLITE WATER OVER THE SURFACE, THE WATER HAVING AN ACID PH AND CONTINUING THE TREATMENT UNTIL THE PH OF THE WATER AFTER PASSING OVER THE SURFACR REMAINS SUBSTANTIALLY CONSTANT AND UNTIL THE PH OF THE WATER
Claim 2
Independent Claim
64 words
THE METHOD OF REMOVING WATER DEPOSITED SCALE FROM THE SURFACE OF A WATER CONTAINER WHICH INCLUDES THE STEPS OF REMOVING THE SCALE FROM THE SURFACE BY PASSING HYDROGEN ZEOLITE WATER OVER THE SURFACE, THE WATER HAVING AN ACID PH AND CONTINUING THE TREATMENT UNTIL THE PH OF THE WATER AFTER PASSING OVER THE SURFACR REMAINS SUBSTANTIALLY CONSTANT AND UNTIL THE PH OF THE WATER
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-06-04 | 1954-12-04 | 1955-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-04 | 1958-12-04 | 1959-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-04 | 1962-12-04 | 1963-06-05 | $7700.00 | Window Closed / Lapsed |