US2541345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical heating composition
Assignee: Atlas Powder Co
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Filing: 1947-10-28
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Granted: 1951-02-13
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Expires: 1967-10-28
Abstract
No abstract record available.
Inventors
- 👤 Navarre Maison G De
- 👤 William C Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:13
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
IN A HEATING DEVICE OF THE TYPE DESCRIBED, FOR THE MACHINELESS WAVING OF HAIR, THE ELEMENT WHICH COMPRISES AN ABSORBENT PAD CONTAINING AN OXIDIZABLE SOLUTION COMPRISING FROM 70 TO 35% BY WEIGHT OF AT LEAST ONE POLYOXYETHYLENE ETHER OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF HEXITOLS, HEXOSES, AND HEXOBIOSES, SAID ETHER HAVING FROM 3 TO 100 OXYETHYLENE GROUPS PER MOLECULE, FROM 20 TO 50% ETHYLENE GLYCOL, AND FROM 10 TO 30% WATER.
References Cited (Backward Citations)
US2239410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |