US2317685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of waterproofing inorganic hydrous oxide bodies, and product
Assignee: Research Corp
•
Filing: 1941-04-03
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Granted: 1943-04-27
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Expires: 1961-04-03
Abstract
No abstract record available.
Inventors
- 👤 Ernst A Hauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:12
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B24/00; C04B24/04; C04B41/45; C04B41/46; C04B41/60; C04B41/61; C04B41/62; C04B2111/00; C04B2111/20; C04B2111/27; Y; Y10; Y10S; Y10S106/00; Y10S106/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-04-26 | 1946-10-26 | 1947-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-04-26 | 1950-10-26 | 1951-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-04-26 | 1954-10-26 | 1955-04-27 | $7700.00 | Window Closed / Lapsed |