US3772065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for waterproofing masonry structures
Assignee: Dynamit Nobel AG
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Filing: 1971-06-14
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Granted: 1973-11-13
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Expires: 1991-06-14
Abstract
Abstract Novel masonry impregnant which is alcoholic solution of alyltrialkoxysilanes having up to two alkoxy groups per silicon atom. Masonry impregnated with such solutions has increased water repellancy even if it is wet with water prior to or during impregnation.
Inventors
- 👤 C Seiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:47
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C04B41/495; C04B41/4961; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
Method as claimed in claim 1 wherein said solution has more than one silane dissolved therein.
Claim 2
Dependent Claim
30 words
Method as claimed in claim 1 including applying said solution to said masonary in such proportion as to apply at least 25 grams of solids per square meter of masonary.
Claim 3
Dependent Claim
25 words
Method as claimed in claim 1, wherein said masonry is wet prior to said impregnation and wherein the solvent of said impregnant is an alkanol.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |