Patent US3411939A successfully refreshed from Google Patents.
US3411939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for rendering earthy material impervious to water and the products thereof
Assignee: Uniroyal Chemical Co Inc
•
Filing: 1964-11-09
•
Granted: 1968-11-19
•
Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Byron A Hunter
- 👤 Schmeling Bogislav Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:08
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1305; C09; C09K; C09K17/00; C09K17/14; Y; Y10; Y10S; Y10S106/00; Y10S106/90; Y10T; Y10T428/00; Y10T428/26; Y10T428/266; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |