US2833673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-repellent asbestos-cement structural articles and method of making
Assignee: Union Carbide Corp
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Filing: 1954-03-25
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Granted: 1958-05-06
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Expires: 1974-03-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas F Hart
- 👤 Jr Ronald S Wishart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:41
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4961; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN ASBESTOS-CEMENT SHINGLE HAVING A WATER-REPELLENT BLOOM-RESISTANT SURFACE FORMED BY COATING SAID SURFACE WITH A SILICONE COMPOSITION, IN A LOADING AMOUNT OF FROM 20 GRAMS TO 40 GRAMS PER SQUARE OF SURFACE, SAID SILICONE BEING THE HYDROLYSIS AND CONDENSATION COPOLYMER PRODUCT OF AMYLTRICHLOROSILANE AND METHYLTRICHLOROSILANE IN ABOUT EQUAL MOLE PROPORTIONS.
Claim 2
Dependent Claim
50 words
AN ASBESTOS-CEMENT SHINGLE HAVING A WATER-REPELLENT BLOOM-RESISTANT SURFACE FORMED BY COATING SAID SURFACE WITH A SILICONE COMPOSITION, IN A LOADING AMOUNT OF FROM 20 GRAMS TO 40 GRAMS PER SQUARE OF SURFACE, SAID SILICONE BEING THE HYDROLYSIS AND CONDENSATION COPOLYMER PRODUCT OF AMYLTRICHLOROSILANE AND METHYLTRICHLOROSILANE IN ABOUT EQUAL MOLE PROPORTIONS.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |