US3372052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water repellent for masonry
Assignee: Union Carbide Corp
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Filing: 1964-12-24
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Granted: 1968-03-05
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Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Matt C Polniaszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:11
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B26/00; C04B26/30; C04B26/32; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4961; C04B41/50; C04B41/5018; C08; C08K; C08K3/00; C08K3/34; C04B2111/00; C04B2111/20; C04B2111/27
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) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |