Patent US2957839A successfully refreshed from Google Patents.
US2957839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certification of correction
Assignee: —
•
Filing: —
•
Granted: 1960-10-25
•
Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:25
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C09; C09D; C09D183/00; C09D183/04; C04B24/00; C04B24/40; C04B24/42; C04B41/009; C04B41/495; C04B41/4961; C04B41/60; C04B41/61; C04B41/62; C04B41/64; C09K; C09K3/00; C09K3/18; C04B2111/00; C04B2111/20; C04B2111/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A METHOD FOR RENDERING A MATERIAL WATER REPELLENT WHICH COMPRISES ADMIXING A WATER SOLUBLE FORM A ZIRCONIUM OXYCHLORIDE WITH A WATER SOLUTION OF WATER SOLUBLE SUBSTITUTED SILANES OF GENERAL FORMULA:
Claim 2
Independent Claim
30 words
A METHOD FOR RENDERING A MATERIAL WATER REPELLENT WHICH COMPRISES ADMIXING A WATER SOLUBLE FORM A ZIRCONIUM OXYCHLORIDE WITH A WATER SOLUTION OF WATER SOLUBLE SUBSTITUTED SILANES OF GENERAL FORMULA:
References Cited (Backward Citations)
US2453562A
Cited
US2559342A
Cited
US2687388A
Cited
US2774690A
Cited
US2757152A
Cited
US2798858A
Cited
US2728736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |