US3173404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective film formation in high pressure steam generators
Assignee: Individual
•
Filing: 1963-08-16
•
Granted: 1965-03-16
•
Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Mortimer C Bloom
- 👤 Krulfeld Myer
- 👤 Gothern N Newport
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:16
CPC Classifications
F; F28; F28F; F28F19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE OPERATION OF A STEAM GENERATOR AT HIGH PRESSURES OF AT LEAST 350 P.S.I. IN WHICH THE STEAM IS PRODUCED BY CONTACTING THE WATER WITH A HEATED STEEL SURFACE, THE IMPROVEMENT WHICH COMPRISES OPERATING SAID STEAM GENERATOR AT SAID HIGH PRESSURES WITH BOILER FEED WATER WHICH IS ALKALIZED WITH LITHIUM HYDROXIDE IN SOLUTION THEREIN TO A PH IN THE RANGE OF 9 TO 13.
Claim 2
Dependent Claim
65 words
IN THE OPERATION OF A STEAM GENERATOR AT HIGH PRESSURES OF AT LEAST 350 P.S.I. IN WHICH THE STEAM IS PRODUCED BY CONTACTING THE WATER WITH A HEATED STEEL SURFACE, THE IMPROVEMENT WHICH COMPRISES OPERATING SAID STEAM GENERATOR AT SAID HIGH PRESSURES WITH BOILER FEED WATER WHICH IS ALKALIZED WITH LITHIUM HYDROXIDE IN SOLUTION THEREIN TO A PH IN THE RANGE OF 9 TO 13.
References Cited (Backward Citations)
US2755170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |