US2803561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for rendering calcium-containing masonry water-repellent
Assignee: General Electric Co
•
Filing: 1952-05-27
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Granted: 1957-08-20
•
Expires: 1972-05-27
Abstract
No abstract record available.
Inventors
- 👤 William S Kather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:38
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/4922; C04B41/4927; C04B41/495; C04B41/4961; C04B41/60; C04B41/61; C04B41/62; C04B41/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE PROCESS FOR RENDERING WATER REPELLENT A MASONRY SELECTED FROM THE CLASS CONSISTING OF LIMESTONE AND GYPSUM MASONRIES WHCIH PROCESS COMPRISES (1) TREATING SAID MASONRY WITH A COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ALKALI-METAL SALT OF AN ALKYLSILANTRIOL, TO EFFECT COATING AND PENETRATION OF THE MASONRY WITH THE SOLUTION, THE CONCENTRATION OF THE ALKALIMETAL SALT BEING EQUAL, BY WEIGHT, TO FORM 0,1 TO 6% OF THE TOTAL WEIGHT OF THE AQUEOUS SOLUTION WHEN CALCULATING THE METALLIC SALT AS RSIO1.5, WHERE R IS AN ALKYL RADICAL, AND (2) CAUSING THE TREATED MASONRY TO BECOME WATERREPELLENT BY DRYING IT TO CONVERT THE AFORESAID ALKALIMETAL SALT TO AN ALKYL POLY-SILOXANE WHICH COATS THE SURFACE OF THE MASONRY AND PENETRATES THE PORES OF THE MASONRY WITHOUT CLOSING THE PORES.
Claim 2
Dependent Claim
127 words
THE PROCESS FOR RENDERING WATER REPELLENT A MASONRY SELECTED FROM THE CLASS CONSISTING OF LIMESTONE AND GYPSUM MASONRIES WHCIH PROCESS COMPRISES (1) TREATING SAID MASONRY WITH A COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE ALKALI-METAL SALT OF AN ALKYLSILANTRIOL, TO EFFECT COATING AND PENETRATION OF THE MASONRY WITH THE SOLUTION, THE CONCENTRATION OF THE ALKALIMETAL SALT BEING EQUAL, BY WEIGHT, TO FORM 0,1 TO 6% OF THE TOTAL WEIGHT OF THE AQUEOUS SOLUTION WHEN CALCULATING THE METALLIC SALT AS RSIO1.5, WHERE R IS AN ALKYL RADICAL, AND (2) CAUSING THE TREATED MASONRY TO BECOME WATERREPELLENT BY DRYING IT TO CONVERT THE AFORESAID ALKALIMETAL SALT TO AN ALKYL POLY-SILOXANE WHICH COATS THE SURFACE OF THE MASONRY AND PENETRATES THE PORES OF THE MASONRY WITHOUT CLOSING THE PORES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |