US3320408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat storage apparatus
Assignee: Hooker Chemical Corp
•
Filing: 1964-05-04
•
Granted: 1967-05-16
•
Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 Mekjean Matthew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
F; F24; F24H; F24H7/00; F24H7/002; Y; Y10; Y10S; Y10S165/00; Y10S165/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A HEAT STORAGE APPARATUS COMPRISING A MILD STEEL CONTAINER FOR A HEAT STORAGE MEDIUM, A HEAT STORAGE MEDIUM, ELECTRICAL HEATING MEANS WITHIN THE CONTAINER FOR HEATING SAID HEAT STORAGE MEDIUM, RIGID METALLIC HEAT CONDUCTORS DISTRIBUTED IN A SPACED RELATIONSHIP TO EACH OTHER WITHIN SAID CONTAINER IN CONTACT WITH SAID HEAT STORAGE MEDIUM, SAID HEAT STORAGE COMPRISING A MAJOR PROPORTION BY WEIGHT OF A SUBSTANTIALLY ANHYDROUS SODIUM HYDROXIDE COMPOSITION CONTAINING A CORROSION INHIBITOR AND WHEREIN SAID METALLIC CONDUCTORS ARE OF MILD STEEL CONTACTING AT LEAST TWO OPPOSED SIDE WALLS OF SAID CONTAINER AND DISPLACING FROM SAID CONTAINER 5 TO 70 PERCENT BY VOLUME OF SAID HEAT STORAGE MEDIUM.
Claim 2
Dependent Claim
107 words
A HEAT STORAGE APPARATUS COMPRISING A MILD STEEL CONTAINER FOR A HEAT STORAGE MEDIUM, A HEAT STORAGE MEDIUM, ELECTRICAL HEATING MEANS WITHIN THE CONTAINER FOR HEATING SAID HEAT STORAGE MEDIUM, RIGID METALLIC HEAT CONDUCTORS DISTRIBUTED IN A SPACED RELATIONSHIP TO EACH OTHER WITHIN SAID CONTAINER IN CONTACT WITH SAID HEAT STORAGE MEDIUM, SAID HEAT STORAGE COMPRISING A MAJOR PROPORTION BY WEIGHT OF A SUBSTANTIALLY ANHYDROUS SODIUM HYDROXIDE COMPOSITION CONTAINING A CORROSION INHIBITOR AND WHEREIN SAID METALLIC CONDUCTORS ARE OF MILD STEEL CONTACTING AT LEAST TWO OPPOSED SIDE WALLS OF SAID CONTAINER AND DISPLACING FROM SAID CONTAINER 5 TO 70 PERCENT BY VOLUME OF SAID HEAT STORAGE MEDIUM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |