US3563786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of rendering water-pervious building materials hydrophobic
Assignee: Individual
•
Filing: 1967-09-18
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Granted: 1971-02-16
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Expires: 1987-09-18
Abstract
Abstract A METHOD OF WATER-PROOFING WATER PERVIOUS BUILDING MATERIAL WHEREIN THE BUILDING MATERIALS ARE IMPREGNATED WITH AN EMULSION OF UNSAPONIFIED WAX GLOBULES IN AN AQUEOUS OUS SOLUTION OF A WATER SOLUBLE SOAP OR SOAPS. THIS IMPREGNANT COMPOSITION IS THEN CONTACTED WITH AN AQUEOUS SOLUTION OF WATER SOLUBLE METAL SALT OR SALTS TO PRECIPITATE AN INSOLUBLE METALLIC SOAP. AN ANTIOXIDANT IS USED IN THE MIXTURE TO PREVENT ULTRAVIOLET LIGHT DEGRADATION.
Inventors
- 👤 Sydney Arthur Tse
- 👤 Cedric Jack Tse
- 👤 Charles Athol Pierard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:26
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/52; C04B2111/00; C04B2111/20; C04B2111/27
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |