US2856506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for storing and releasing heat
Assignee: Individual
•
Filing: 1956-12-03
•
Granted: 1958-10-14
•
Expires: 1976-12-03
Abstract
No abstract record available.
Inventors
- 👤 Telkes Maria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:56
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/08; F; F24; F24D; F24D11/00; F28; F28D; F28D20/00; F28D20/0056; F28D20/02; Y; Y02; Y02E; Y02E60/00; Y02E60/14; Y10; Y10S; Y10S159/00; Y10S159/18; Y10S165/00; Y10S165/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
THE METHOD OF STORING AND RELEASING HEAT COMPRISING THE STEPS OF CONVERTING SOLID ANHYDROUS SODIUM SUL-
Claim 2
Independent Claim
16 words
THE METHOD OF STORING AND RELEASING HEAT COMPRISING THE STEPS OF CONVERTING SOLID ANHYDROUS SODIUM SUL-
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) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |