Patent US2474704A successfully refreshed from Google Patents.
US2474704A
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Method of rendering materials water-repellent
Assignee: Dow Silicones Corp
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Filing: 1948-08-11
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Granted: 1949-06-28
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Expires: 1968-08-11
Abstract
No abstract record available.
Inventors
- 👤 Thayer Mary Elizabeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
A; A23; A23G; A23G3/00; A23G3/34; A23G3/343; A23P; A23P10/00; A23P10/30; A23P20/00; A23P20/10; B; B01; B01J; B01J2/00; B01J2/006; C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C13; C13B; C13B50/00; C13B50/002; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/13; A23G2200/00; A23G2200/06; Y; Y10; Y10S; Y10S215/00; Y10S215/02; Y10S8/00; Y10S8/01
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) | 1952-06-27 | 1952-12-27 | 1953-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-27 | 1956-12-27 | 1957-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-27 | 1960-12-27 | 1961-06-28 | $7700.00 | Window Closed / Lapsed |