Patent JPH03122357A successfully refreshed from Google Patents.
US2680063A
Expired / Lapsed
US
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Chemical heating composition
Assignee: United States Department of the Army
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Filing: 1952-01-21
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Granted: 1954-06-01
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Expires: 1972-01-21
Abstract
No abstract record available.
Inventors
- 👤 Philip J Shapiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:31
CPC Classifications
A; A41; A41D; A41D13/00; A41D13/002; A41D13/005; A41D13/0051; C; C09; C09K; C09K5/00; C09K5/16; C09K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A WATER ACTIVATED THEREMOPHORIC COMPOSITION ADAPTED TO MAINTAIN AN AVERAGE TEMPERATURE WITHIN A RANGE OF FROM ABOUT 100* F. TO ABOUT 120* F. OVER AN EXTENDED PERIOD OF TIME, SAID COMPOSITION COMPRISING ABOUT 90% IRON PARTICLES, AND AN OXIDIZING MIXTURE, SAID OXIDIZING MIXTURE INCLUDING, PER 10 PARTS BY WEIGHT, POTASSIUM CHLORIDE ABOUT 4.3 PARTS, CUPRIC CHLORIDE ABOUT 2.2 PARTS, POTASSIUM PERMANGANATE ABOUT 1.7 PARTS, CUPRIC OXIDE ABOUT 1.3 PARTS, POTASSIUM CHLORATE ABOUT .5 PARTS.
Claim 2
Dependent Claim
74 words
A WATER ACTIVATED THEREMOPHORIC COMPOSITION ADAPTED TO MAINTAIN AN AVERAGE TEMPERATURE WITHIN A RANGE OF FROM ABOUT 100* F. TO ABOUT 120* F. OVER AN EXTENDED PERIOD OF TIME, SAID COMPOSITION COMPRISING ABOUT 90% IRON PARTICLES, AND AN OXIDIZING MIXTURE, SAID OXIDIZING MIXTURE INCLUDING, PER 10 PARTS BY WEIGHT, POTASSIUM CHLORIDE ABOUT 4.3 PARTS, CUPRIC CHLORIDE ABOUT 2.2 PARTS, POTASSIUM PERMANGANATE ABOUT 1.7 PARTS, CUPRIC OXIDE ABOUT 1.3 PARTS, POTASSIUM CHLORATE ABOUT .5 PARTS.
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) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |