US3470865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a heat storage composition and use thereof
Assignee: Hooker Chemical Corp
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Filing: 1966-11-21
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Granted: 1969-10-07
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Expires: 1986-11-21
Abstract
No abstract record available.
Inventors
- 👤 Matthew Mekjean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
F; F24; F24H; F24H7/00; F24H7/002; C; C09; C09K; C09K5/00; C09K5/16; C23; C23F; C23F11/00; F24C; F24C15/00; F24C15/34
Claims Analysis
Total Claims: 0
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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) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |