Patent US2521358A successfully refreshed from Google Patents.
US2521358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azochloramid ice
Assignee: Individual
•
Filing: 1946-03-30
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Granted: 1950-09-05
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Expires: 1966-03-30
Abstract
No abstract record available.
Inventors
- 👤 Galvin Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:44
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/06; A23B4/08; A23B7/00; A23B7/04; A23B7/05; A61; A61L; A61L2/00; A61L2/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AS AN ARTICLE OF MANUFACTURE, FROZEN WATER IN WHICH IS DISPERSED AZOCHLORAMID IN THE PROPORTION OF FROM 5 TO 50 MILLIGRAMS OF THE DRY SALT TO 300 POUNDS OF WATER.
Claim 2
Dependent Claim
30 words
AS AN ARTICLE OF MANUFACTURE, FROZEN WATER IN WHICH IS DISPERSED AZOCHLORAMID IN THE PROPORTION OF FROM 5 TO 50 MILLIGRAMS OF THE DRY SALT TO 300 POUNDS OF WATER.
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) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |